I have an 05 Xterra. 348,000 miles on orginal motor and trans. I have done routine maintance. Ball joints brakes etc. it these things as a beast. If you take car of them they will last. O recently upgraded to the 2012 pathfinder. The only thing I don’t like about the 4.0 motors are the timing chain guides and how they used such weak plastic with a sharp chain. If you don’t know how to do it yourself that job can get pricey. Great video.
@@MaximumDIYGarage unfortunately, no haha. I think they changed the design in the 14 and up models. But the 12 still has that problem. Luckily, one probably will only have to change them once in the life of the vehicle depending on how aggressive they drive. Or if like mine, they have almost a half million mile vehicle.
@FDL-ny1de Yeo, my 06 had the chain and guides done at 170k miles, along with a new clutch. Then I replaced the radiator, cats, shocks, away bar bushings, sway bar links, valve covers, spark plugs, air bag sensor, heater core hoses and all vacuum hoses. Check out my channels for all these videos.
@@MaximumDIYGarage she should be good to go now haha. They are just such fun vehicles. And if one plans on keeping it for the joy of driving it, then who cares if you spend more than it’s worth to keep it up to par.
You are correct, that was a major PITA! I didn’t remove it, just had to move it up and out of the way. I filmed it all, but my head was in the way entire time, so I just edited it out.
Thanks for the video. I bought a poor condition '07 Pathfinder for $500 and the right side exhaust is clogged. I narrowed it down to the right side secondary cat with a pressure gauge threaded into the O2 sensor holes. When I took out the secondary cat it looks somewhat normal except for a lot of gray powder. I can see with my flashlight that the primary cat is hollowed out like yours. I don't think the PO did it because he was clueless about car stuff. Maybe it disintegrated on it's own and then clogged the downstream cat? Anyway I'm planning to replace both but I'm using cheap Amazon cats because the whole car isn't worth the price of OEM ones. Struggling with the bolts that are under the damn heat shield. They are way, way more rusted than yours and access isn't good. I've only soaked them with penetrating oil so far, hopefully that's enough. Thanks again for the video.
You’re welcome, Alex! I think you may be right, they just disintegrate and turn into dust (primaries and then they clog the downstream secondaries). If your state doesn’t require emissions testing then leave them hollow (straight piped). I was lucky, my truck spent most of its life in CA. Also my bolts were easy to remove, so I suspect someone was there not too long before I bought the truck. You’re right about the cost. I bought mine for $2,800 and the parts and labor to replace cats was $2,600, lol. Still to me it was worth it as I did I it for half price by DIYing it. Let me know how it goes with Amazon cats, I’ve heard there may be some fitment issues and some finagling maybe required. Good luck. It’s a big job!
@@MaximumDIYGarage It came off easily! Luckily the rusted bolts came off without any drama. My county in Nevada doesn't require emission testing but the neighboring one does and I'm going to make it pass so that it's more sellable. I probably could have gotten away with a hollowed out secondary cat but I'd already ordered it because that is where the clog was, so I might as well install it now. I'm retired and like fixing things in the garage so that's why I bough this turd, to give me something to work on.
wow ! those bolts were in really good shape not alot of rust ! on my there where like .. gone LOL same for exhaust pipe when I worked on that so I had to drill them all out its not a fun job let me tell you that lol
Thank you, Stan! I watched your exhaust and cat replacement videos. I got lucky that the previous owner had his cats hollowed, most likely not too long before he sold it, so the bolts were easy to remove.
@@Gaguilar2064 I’m going to look. It may be a good idea if you call your local Nissan parts department at the dealership, give them your VIN and they will give you the part number in case if there’s a variance between earlier second gen and later second Gen Xterras versus Pathfinder versus frontier it would make sense that all the parts should be the same, but sometimes they do vary.
Hi! I’m sorry I do not. With exhaust components, the exact torque is not as critical as, say, engine block, etc. With time and exposure to heat cycles those bolts will melt to the exhaust components anyway and may need to be cut off next time they need to come off. Just use the German torque specs- Good and tight! 😆
Good deal! Thank you for watching and commenting. Doing this yourself saves you about $1000 in labor! You may get lucky asking your friendly neighborhood Nissan service dept for those torque specs. They sometimes print out a schematic of the system along with torque specs!
Where did you get the replacement cats from? And part number please. About how long did this job take? Did you have to remove the front tires, and wheel well covers for access? I have an 06 pathfinder and am popping these codes. Great video, one of the best I've found for this process. Awesome job, Thank you
Hi! I bought the cats from a Nissan Dealer parts department (had to drive 140 miles round trip) as they ran a special if I turned in the old cats and would have saved $1000. But it turned out my old cats were hollowed out by PO, so I could not turn them in. So it was $1,500. You May need to verify your part # with your dealer parts dept giving them your VIN as you have a Pathfinder. It took me all day to do the job. I did have to remove the wheel liners and had the truck jacked up in the front with tires off. I hope this helps. Good luck!
@@MaximumDIYGarage Thank you for the quick response, greatly unexpected. 1500 for both cats still seems pretty reasonable. You didn't show if you replaced the secondary cats, did you just reinstall the original back in? It kinda makes sense, since the O2 sensors are before and after the primary cats. Did you clean the secondary cats with any solvents, or nah?? Thanks again.
@@izzyp5713sorry for a much overdue reply. The job took about 4 hours with filming and taking my time. I only replaced the primaries. I hope your project went smoothly!
Damn dude my SES light came on for p0420 😭 I had my cats replaced about 3 years ago and the shop said there was only a 1 year warranty 🤦♂️ guess ill be watching this video more closely a few times so i can replace mine... Fml
Man, that sucks! Remember, the cats go because they get contaminated. It is usually because of a cracked valve cover hose (in my case the one that connected both valve covers in the front was cracked in both ends), which makes your truck run lean or rich, which clogs up the cat. Fix the underlying issue and the cats will last a long time! Keep us posted on your progress!
@MaximumDIYGarage I just had my knock sensors and sub harness replaced because of P0328. Now they said that the code is P0430 ☹. Would $3800 w/ labor and oem uc's. Or $3000 for part store ones. Not after I just spent $1000 for the other repair. I'm hoping to save as much as possible on a budget set of all four. 05 w/ 106k.
Matt, is your truck running rough? Poor gas mileage? I’m my case, I almost regretted replacing them initially. I had the codes, but the truck ran great, just a little loud )like an exhaust leak) and smelled like a hot rod (running rich). When I removed the old ones, I found that PO had them hollowed out. I should have just put everything back together as I do not have inspection in my part of state. But I already bought the cats and decided to install them since they were right there. I bought them from Nissan Parts website and they were on sale, so they cost me $1,500 for a pair. (I’m talking about primary cats). Installation was free since I did the labor. I’d say, save your money and don’t replace them if yours are hollowed out, unless you have to pass inspection. Or only replace the primary ones as the secondary will not likely cause any issues and there is no oxygen sensor after the secondary cats, so replacing them will not fix the check engine light.
@@MaximumDIYGarage not really rough just enough to notice. Yes poor mpg, like 10, maybe. Would have hesitation to rev up when getting on the freeway. Now with the sensors and harness replaced. The hesitation is gone. The tech guy said that the pass side is basically done for and the dr side is getting close to being done for. I suggested the Cataclean. Since I used that on my 2000 X, and it removed the code.
Nice plan! I wish I knew that mine were hollow before I ordered the new ones, and tore everything apart. Once I discovered that they were hollow, I was halfway into it, and already had a new cats in the boxes in my garage, so I went ahead and installed them.
@@MaximumDIYGarage to be clear the p0420 and p0430 are caused by the downstream 02 sensors realizing the cats aren’t working right. So in theory an 02 spacers would fix the code?
@PYROtheNomad that’s what a lot of guys do and they say it works for a while. The main reason I replaced mine is because the exhaust sounded raspy and smelled of raw gas (running rich). New cats fixed both problems.
I have 130 miles on the odometer now. Should I wait when the catalytic converter breaks down or is it better to prepare for a replacement? Is there any chance it will last even longer?
I do not think you should pre-emptively replace your cats. It is not part of the routine preventative maintenance. If your system operates well, and there are no codes, no check engine light, just continue monitoring it and save up for when the time comes. You may not need to replace them until 200k miles or longer. Instead, I would make sure you keep your MAF sensor clean, make sure you replace your PCV valve and any brittle vacuum hoses/lines to make sure your air/fuel ratio is maintained. I think what kills the cats is poor fuel quality and lack of maintenance of the intake and fuel injection system. Replace your valve covers if the gaskets are leaking and spark plugs when you’re there. I will have a video coming out on that soon.
You do not have to as there are no O2 sensors after secondary cats. If you do not have codes about secondary cats malfunctioning, you can leave them alone. One of my secondary cats was hollowed out and the other was intact and that did not throw any codes.
@@MaximumDIYGarage thanks. appreciate the detailed video. also, did you buy OEM or aftermarket cats? I really don't like overpaying but I also don't want to do this job twice.
Great video, I am getting check light(420 430) on when I drive above 2000rpms, if I clear code and drive between 1000-2000rpms code is not coming on for some time(couple days maybe). Is it possible it is not catalyst converter fault ?
Giorgi, I’m pretty certain that it is your catalyst. It’s probably just getting bad. If your state/city does not require emissions testing, you can do what the previous owner of my X did-hollow out your cats to save money. I could have left it, but didn’t like the raw fuel smell and raspy sounding exhaust, so I replaced them. Where do you live? Good luck,man!
@@MaximumDIYGarage which cats do I need to replace mine, and is it all 4 or just the 2 closest to engine block..? Mine is an '06 Pathfinder 4WD.. thanks in advance!!
@@elderparangaricutirimicuar3899 thank you! More content coming up on XTerra (valve covers, spark plugs, blower fan motor, windshield wiper link and other parts replacement)!
What do you mean “ to determine if it’s good or not”? It’s a Nissan OEM part. They guarantee it’s good. 👍 the check engine light was gone once the cats were replaced. I did not even replace the oxygen sensors.
@@coolghoul9 hmm, now that’s a good question! I don’t remember for sure, but I typically do with this kind of project, so I’m relatively sure I did. It is always safer to do so, especially since I had to disconnect the ground straps and O2 sensors.
@@MaximumDIYGarage so I understand that it "has to work since it's oem" but wouldn't disconnecting the battery clear the codes so having it start up with no codes doesn't mean it fixed it because the cat/o2s arent even at operating temp for the computer to check the cat operation with the o2s?
@@coolghoul9 I may have not been clear in the video. The reason I replaced the cats in the first place is that the truck sounded like it had an exhaust leak (it didn’t) and it smelled like a 1970’s muscle car when it was idling in the garage. I knew the cats were bad. What I didn’t know is that the PO got them hollowed out. Again, replacing the cats fixed my P0330/P0340 codes. And yes, I’ve driven over 4,000 miles with new cats - still no codes!
Hey man, I am getting code P2A00 and P0430. I haven't seen anyone else in the comments mention that combo of codes as I know the P2A00 one is the upstream sensor before the cat. I had this sensor replaced last year and its been throwing the code again and now the cat code is showing up as well. For the first time I smelt the sulphur smell coming from my exhaust which I know can be a sign that my engine is running rich or my cat is failing. What do you think about this?
I would replace the cat and then the O2 sensor, otherwise if you just replace the sensor, the failing cat is going to continue fouling the oxygen sensor. Also, make sure that all of your vacuum hoses and PCV hoses are intact, otherwise if one of them is cracked, you have a vacuum leak and as you’re getting more air in the system, the car is dumping more fuel, and that also follows up the catalytic converter deeming it dead. Does that make sense? I will be releasing a video soon on replacing the valve, cover gaskets and all the PCV hoses and vacuum hoses, spark plugs, and a few other things. stay tuned.
Yea that makes sense thanks! Would you drive it like this? I am assuming it is not great for it. It idles like normal and I haven't really noticed the engine being sluggish or reduced acceleration. But I don't want to make it any worse. Cheers. @@MaximumDIYGarage
So basically you filmed all the easy parts but didn't say anything on how remove the passenger side when the muffler prevents any movement to remove the cat from the long bolts.. nice. Not
Oops. Yes, I was too busy fighting with the fasteners and needed both hands. If you have a rusty exhaust, better take it to the shop or be ready to cut things off. Mine is a California truck and all the bolts came off easily. You have to loosen all the connectors and push back the muffler to disconnect. You are welcome. Not 😂 Thanks for watching!
@@MaximumDIYGarageyou can’t get upset when someone calls you out on the quality of your videos. There’s plenty of other XTerra owners who persevered and got them out and showed everything. If your answer is tAke iT tO da ShOP when things get too hard, you ain’t no DIYer. California boys are Soft.
No need to be rude to the guy who made a video to help people out, Use a screwdriver to pry the passenger side back and the muffler will push back enough to remove it. I'm sure you've gotten it by now (hopefully), but the guy shows us all a lot more than other people, and you're scrutinizing the fact he was trying to help people out with what he was able to capture? Do better man, hope you got the repair done.
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I have an 05 Xterra. 348,000 miles on orginal motor and trans. I have done routine maintance. Ball joints brakes etc. it these things as a beast. If you take car of them they will last. O recently upgraded to the 2012 pathfinder. The only thing I don’t like about the 4.0 motors are the timing chain guides and how they used such weak plastic with a sharp chain. If you don’t know how to do it yourself that job can get pricey. Great video.
Thank you, sir! Hopefully the later years, like 2012, the chain guides we’re improved. Good luck with yours.
@@MaximumDIYGarage unfortunately, no haha. I think they changed the design in the 14 and up models. But the 12 still has that problem. Luckily, one probably will only have to change them once in the life of the vehicle depending on how aggressive they drive. Or if like mine, they have almost a half million mile vehicle.
@FDL-ny1de Yeo, my 06 had the chain and guides done at 170k miles, along with a new clutch. Then I replaced the radiator, cats, shocks, away bar bushings, sway bar links, valve covers, spark plugs, air bag sensor, heater core hoses and all vacuum hoses. Check out my channels for all these videos.
@@MaximumDIYGarage she should be good to go now haha. They are just such fun vehicles. And if one plans on keeping it for the joy of driving it, then who cares if you spend more than it’s worth to keep it up to par.
@@Sri_Ananda83 I agree 💯 %!
I love how you didnt show the heat sheild removale 😂 so aggravating my fingers hurt just watching
You are correct, that was a major PITA! I didn’t remove it, just had to move it up and out of the way. I filmed it all, but my head was in the way entire time, so I just edited it out.
Nice work man! I had to replace my front cats almost immediately after I bought my xterra, about 3 years ago
Yep, same here! They were about 1/3 the value of the truck, lol! My X is definitively a keeper now! Thanks for watching, Moe!
Freaking awesome, great video. Thank you!
Thank you, sir! Means a lot!
Great video! Helped me out a lot.
Thank you for watching and commenting! Glad it was helpful! Means a lot!
Great, good job!
Thank you for watching and subscribing!!!!
Good work. I hate removing the bolts holding the exhaust pieces together. They never come off cleanly for me.
Thank you, buddy! I was lucky as PO messed with the cats before so the bolts were easy to remove.
Thanks for the video. I bought a poor condition '07 Pathfinder for $500 and the right side exhaust is clogged. I narrowed it down to the right side secondary cat with a pressure gauge threaded into the O2 sensor holes. When I took out the secondary cat it looks somewhat normal except for a lot of gray powder. I can see with my flashlight that the primary cat is hollowed out like yours. I don't think the PO did it because he was clueless about car stuff. Maybe it disintegrated on it's own and then clogged the downstream cat? Anyway I'm planning to replace both but I'm using cheap Amazon cats because the whole car isn't worth the price of OEM ones. Struggling with the bolts that are under the damn heat shield. They are way, way more rusted than yours and access isn't good. I've only soaked them with penetrating oil so far, hopefully that's enough. Thanks again for the video.
You’re welcome, Alex! I think you may be right, they just disintegrate and turn into dust (primaries and then they clog the downstream secondaries). If your state doesn’t require emissions testing then leave them hollow (straight piped).
I was lucky, my truck spent most of its life in CA. Also my bolts were easy to remove, so I suspect someone was there not too long before I bought the truck. You’re right about the cost. I bought mine for $2,800 and the parts and labor to replace cats was $2,600, lol. Still to me it was worth it as I did I it for half price by DIYing it.
Let me know how it goes with Amazon cats, I’ve heard there may be some fitment issues and some finagling maybe required. Good luck. It’s a big job!
@@MaximumDIYGarage It came off easily! Luckily the rusted bolts came off without any drama. My county in Nevada doesn't require emission testing but the neighboring one does and I'm going to make it pass so that it's more sellable. I probably could have gotten away with a hollowed out secondary cat but I'd already ordered it because that is where the clog was, so I might as well install it now. I'm retired and like fixing things in the garage so that's why I bough this turd, to give me something to work on.
Yes, and secondary cats are not as expensive as primaries
wow ! those bolts were in really good shape not alot of rust ! on my there where like .. gone LOL same for exhaust pipe when I worked on that so I had to drill them all out its not a fun job let me tell you that lol
Thank you, Stan! I watched your exhaust and cat replacement videos. I got lucky that the previous owner had his cats hollowed, most likely not too long before he sold it, so the bolts were easy to remove.
It also helped that the car spent most of its life in California!
@@MaximumDIYGarage ha! yeah.. thats like huge huge plus ! for real ))
Thank you hero🥵🥵🥵🥵🥵
Thank you!
Would you happen to have the part numbers for both driver and pass cats? Thanks
@@Gaguilar2064 I’m going to look. It may be a good idea if you call your local Nissan parts department at the dealership, give them your VIN and they will give you the part number in case if there’s a variance between earlier second gen and later second Gen Xterras versus Pathfinder versus frontier it would make sense that all the parts should be the same, but sometimes they do vary.
Hi. Thanks for this very helpful video. One question... Did you have any torque specs?
Hi! I’m sorry I do not. With exhaust components, the exact torque is not as critical as, say, engine block, etc. With time and exposure to heat cycles those bolts will melt to the exhaust components anyway and may need to be cut off next time they need to come off. Just use the German torque specs- Good and tight! 😆
@@MaximumDIYGarage ha ha. Yes, I’m familiar with those specs. I just want to avoid stripping or breaking when tightening.
Good deal! Thank you for watching and commenting. Doing this yourself saves you about $1000 in labor!
You may get lucky asking your friendly neighborhood Nissan service dept for those torque specs. They sometimes print out a schematic of the system along with torque specs!
@@MaximumDIYGarage According to the dealership, 25-35 ft-lb. I wouldn't go over 25 ft-lb unless it was all new hardware.
Excellent! Thank you for sharing the specs!
06 Xterra P0420 bank 1.
Secondary code P0430 bank 2.
Just to make sure.. bank 1 is driver side and bank 2 is passenger?
Nope, bank one is the passenger side, this is the side with the odd number cylinders - 1,3,5 on our VQ40DE engines.
@@MaximumDIYGarage Thanks!
@@adrianc5354 my pleasure! Good luck with your project!
Where did you get the replacement cats from? And part number please.
About how long did this job take?
Did you have to remove the front tires, and wheel well covers for access?
I have an 06 pathfinder and am popping these codes.
Great video, one of the best I've found for this process.
Awesome job,
Thank you
Hi! I bought the cats from a Nissan Dealer parts department (had to drive 140 miles round trip) as they ran a special if I turned in the old cats and would have saved $1000. But it turned out my old cats were hollowed out by PO, so I could not turn them in. So it was $1,500. You May need to verify your part # with your dealer parts dept giving them your VIN as you have a Pathfinder. It took me all day to do the job. I did have to remove the wheel liners and had the truck jacked up in the front with tires off.
I hope this helps.
Good luck!
@@MaximumDIYGarage
Thank you for the quick response, greatly unexpected.
1500 for both cats still seems pretty reasonable.
You didn't show if you replaced the secondary cats, did you just reinstall the original back in?
It kinda makes sense, since the O2 sensors are before and after the primary cats.
Did you clean the secondary cats with any solvents, or nah??
Thanks again.
@@izzyp5713sorry for a much overdue reply. The job took about 4 hours with filming and taking my time. I only replaced the primaries. I hope your project went smoothly!
@@MaximumDIYGarage
I appreciate it.
Haven't started yet due to personal reasons, but your vid and info will help greatly
Sounds good. 12k miles later, no check engine light, all is good with factory cats!
The wiring harness connected to the O2 sensor looked new.
It may have had an O2 sensors replaced by the previous owner. Thanks for watching, Paul!
Damn dude my SES light came on for p0420 😭
I had my cats replaced about 3 years ago and the shop said there was only a 1 year warranty 🤦♂️ guess ill be watching this video more closely a few times so i can replace mine... Fml
Did u get yours from the dealership? I found them on Z1 off road for about $600 each
Sorry to hear that, Moe! I bought mine from NissanPartsDeal: www.nissanpartsdeal.com/oem-nissan-catalytic_converter.html
Man, that sucks! Remember, the cats go because they get contaminated. It is usually because of a cracked valve cover hose (in my case the one that connected both valve covers in the front was cracked in both ends), which makes your truck run lean or rich, which clogs up the cat. Fix the underlying issue and the cats will last a long time! Keep us posted on your progress!
@@MaximumDIYGarage thanks man, I'll post a video or two on the issue.
I have a check engine light for bank 1 and 2. Should I only replace the front cats. Or do all 4 cats?
I would only do the front ones. There is no need to do rear ones. Save some $$$!
@@MaximumDIYGarage thanks a lot!
@@MaximumDIYGarage saved me $580 much appreciated
@MaximumDIYGarage
I just had my knock sensors and sub harness replaced because of P0328. Now they said that the code is P0430 ☹. Would $3800 w/ labor and oem uc's. Or $3000 for part store ones. Not after I just spent $1000 for the other repair. I'm hoping to save as much as possible on a budget set of all four. 05 w/ 106k.
Are you still code free? Also how does it drive? Right now, mine has a slight shuddering effect while driving.
Matt, is your truck running rough? Poor gas mileage? I’m my case, I almost regretted replacing them initially. I had the codes, but the truck ran great, just a little loud )like an exhaust leak) and smelled like a hot rod (running rich). When I removed the old ones, I found that PO had them hollowed out. I should have just put everything back together as I do not have inspection in my part of state. But I already bought the cats and decided to install them since they were right there. I bought them from Nissan Parts website and they were on sale, so they cost me $1,500 for a pair. (I’m talking about primary cats). Installation was free since I did the labor. I’d say, save your money and don’t replace them if yours are hollowed out, unless you have to pass inspection. Or only replace the primary ones as the secondary will not likely cause any issues and there is no oxygen sensor after the secondary cats, so replacing them will not fix the check engine light.
No codes. I drove 3,000 miles with new cats. Much quieter, smooth. All is good!
@@MaximumDIYGarage not really rough just enough to notice. Yes poor mpg, like 10, maybe. Would have hesitation to rev up when getting on the freeway. Now with the sensors and harness replaced. The hesitation is gone. The tech guy said that the pass side is basically done for and the dr side is getting close to being done for. I suggested the Cataclean. Since I used that on my 2000 X, and it removed the code.
@@MaximumDIYGarage that's good. I hope to have mine run that way.
I’m doing this so I can hollow mine out 😂. I’m getting a flame tune on my pathfinder so cats gotta go lol
Nice plan! I wish I knew that mine were hollow before I ordered the new ones, and tore everything apart. Once I discovered that they were hollow, I was halfway into it, and already had a new cats in the boxes in my garage, so I went ahead and installed them.
@@MaximumDIYGarage to be clear the p0420 and p0430 are caused by the downstream 02 sensors realizing the cats aren’t working right. So in theory an 02 spacers would fix the code?
@PYROtheNomad that’s what a lot of guys do and they say it works for a while. The main reason I replaced mine is because the exhaust sounded raspy and smelled of raw gas (running rich). New cats fixed both problems.
Also did you make it 300 miles before the light came back on? Or did you buy oe cats
Nope, the light never came back on. These are brand new cats from Ni$$an. 10,000 miles on them now and no problem!
Thanks for watching the video, Brett!
I have 130 miles on the odometer now. Should I wait when the catalytic converter breaks down or is it better to prepare for a replacement?
Is there any chance it will last even longer?
I do not think you should pre-emptively replace your cats. It is not part of the routine preventative maintenance. If your system operates well, and there are no codes, no check engine light, just continue monitoring it and save up for when the time comes. You may not need to replace them until 200k miles or longer. Instead, I would make sure you keep your MAF sensor clean, make sure you replace your PCV valve and any brittle vacuum hoses/lines to make sure your air/fuel ratio is maintained. I think what kills the cats is poor fuel quality and lack of maintenance of the intake and fuel injection system. Replace your valve covers if the gaskets are leaking and spark plugs when you’re there. I will have a video coming out on that soon.
Should you replace the secondary cats when replacing the primary?
You do not have to as there are no O2 sensors after secondary cats. If you do not have codes about secondary cats malfunctioning, you can leave them alone. One of my secondary cats was hollowed out and the other was intact and that did not throw any codes.
@@MaximumDIYGarage thanks. appreciate the detailed video. also, did you buy OEM or aftermarket cats? I really don't like overpaying but I also don't want to do this job twice.
I bought Nissan cats from Nissan Parts Deal
The part numbers for left and right cat are in the video, so you can look them up.
👍💲
Thank you!
good intro
Thank you, Paul!
Great video, I am getting check light(420 430) on when I drive above 2000rpms, if I clear code and drive between 1000-2000rpms code is not coming on for some time(couple days maybe). Is it possible it is not catalyst converter fault ?
Giorgi, I’m pretty certain that it is your catalyst. It’s probably just getting bad. If your state/city does not require emissions testing, you can do what the previous owner of my X did-hollow out your cats to save money. I could have left it, but didn’t like the raw fuel smell and raspy sounding exhaust, so I replaced them. Where do you live? Good luck,man!
I live in Georgia, Tbilisi they require emissions testing and catalyst is mandatory, I guess I just have to buy new cats @@MaximumDIYGarage
@@MaximumDIYGarage which cats do I need to replace mine, and is it all 4 or just the 2 closest to engine block..? Mine is an '06 Pathfinder 4WD.. thanks in advance!!
Gamarjoba!
I would just replace the 2 primary ones (the closest to the engine).
Did you purchase new O2 sensors or did you use the old ones?
I used the old ones and no codes or check engine light!
@@MaximumDIYGarage awesome! Thank you so much for replying! I subscribed!
@@elderparangaricutirimicuar3899 thank you! More content coming up on XTerra (valve covers, spark plugs, blower fan motor, windshield wiper link and other parts replacement)!
@@MaximumDIYGarage sweet! I look forward to it!
The question is both side is same parts because want buy in eBay and no say the part left or right side
I don’t remember exactly, but I think they were different parts for each side
When I ordered them, they were different part numbers, and the price was different for the left VS the right side
Don't you have to do some drive cycles for it to determine if it's good or not
What do you mean “ to determine if it’s good or not”? It’s a Nissan OEM part. They guarantee it’s good. 👍 the check engine light was gone once the cats were replaced. I did not even replace the oxygen sensors.
@@MaximumDIYGarage did you disconnect the battery
@@coolghoul9 hmm, now that’s a good question! I don’t remember for sure, but I typically do with this kind of project, so I’m relatively sure I did. It is always safer to do so, especially since I had to disconnect the ground straps and O2 sensors.
@@MaximumDIYGarage so I understand that it "has to work since it's oem" but wouldn't disconnecting the battery clear the codes so having it start up with no codes doesn't mean it fixed it because the cat/o2s arent even at operating temp for the computer to check the cat operation with the o2s?
@@coolghoul9 I may have not been clear in the video. The reason I replaced the cats in the first place is that the truck sounded like it had an exhaust leak (it didn’t) and it smelled like a 1970’s muscle car when it was idling in the garage. I knew the cats were bad. What I didn’t know is that the PO got them hollowed out. Again, replacing the cats fixed my P0330/P0340 codes. And yes, I’ve driven over 4,000 miles with new cats - still no codes!
Hey man, I am getting code P2A00 and P0430. I haven't seen anyone else in the comments mention that combo of codes as I know the P2A00 one is the upstream sensor before the cat. I had this sensor replaced last year and its been throwing the code again and now the cat code is showing up as well. For the first time I smelt the sulphur smell coming from my exhaust which I know can be a sign that my engine is running rich or my cat is failing. What do you think about this?
I would replace the cat and then the O2 sensor, otherwise if you just replace the sensor, the failing cat is going to continue fouling the oxygen sensor. Also, make sure that all of your vacuum hoses and PCV hoses are intact, otherwise if one of them is cracked, you have a vacuum leak and as you’re getting more air in the system, the car is dumping more fuel, and that also follows up the catalytic converter deeming it dead. Does that make sense? I will be releasing a video soon on replacing the valve, cover gaskets and all the PCV hoses and vacuum hoses, spark plugs, and a few other things. stay tuned.
Yea that makes sense thanks! Would you drive it like this? I am assuming it is not great for it. It idles like normal and I haven't really noticed the engine being sluggish or reduced acceleration. But I don't want to make it any worse. Cheers. @@MaximumDIYGarage
@@jakobtinaburri8783 it should be fine to drive for a while, but don’t put 1000 miles on it like this
So basically you filmed all the easy parts but didn't say anything on how remove the passenger side when the muffler prevents any movement to remove the cat from the long bolts.. nice. Not
Oops. Yes, I was too busy fighting with the fasteners and needed both hands. If you have a rusty exhaust, better take it to the shop or be ready to cut things off. Mine is a California truck and all the bolts came off easily. You have to loosen all the connectors and push back the muffler to disconnect.
You are welcome.
Not 😂
Thanks for watching!
@@MaximumDIYGarageyou can’t get upset when someone calls you out on the quality of your videos. There’s plenty of other XTerra owners who persevered and got them out and showed everything. If your answer is tAke iT tO da ShOP when things get too hard, you ain’t no DIYer. California boys are Soft.
@@miniaddict4534frfr
No need to be rude to the guy who made a video to help people out, Use a screwdriver to pry the passenger side back and the muffler will push back enough to remove it. I'm sure you've gotten it by now (hopefully), but the guy shows us all a lot more than other people, and you're scrutinizing the fact he was trying to help people out with what he was able to capture? Do better man, hope you got the repair done.
Thank you for your support, Valukgaming81!