@RainmanRaysRepairs hi Ray, love your content. I'm joining the industry this year. You've been a big help and big inspiration doing some backyard mechanic work
Hey Ray, it's just amazing how with a little time and effort a good mechanic can work wanders, yes you were right the transmission installer should have replaced the rear main oil seal, but they didn't, we need more mechanics like you, see you next video.
I am both perplex, and not surprised at all. On how much trouble one mechanic can create and/or ignore when doing one job, that they leave for the next person. Its like that meme with the roadkill and roadpaint going over, it stating: Its not my job.
@@TriforceOfCourage97 It's not just the knowledge but also the right tools and the experience that people pay for. ... And too often overpay for or don't even get.
@@MonkeyJedi99 you're not wrong but they're not complicated to work on 99% of the time. it's fairly straight forward stuff. what makes it complicated is people over simplify things. there's a lot of "mechanics" out there can't diagnose to save their life. they'll just throw parts at a problem till the light goes away. i do my own repairs for this reason. i have been known to take a junk yard bound beater and make it daily driver reliable in my drive way. as an average joe wrenching i can tell you the information is out there if you seek it out. the fuel trims tell the story most of the time. once you figure out the live data stuff it's a matter of nut and bolts. the trick is you have to be able to think your way through a problem and solve it. it's one of those things you either have or don't have. you also have to be able to know when your limits, if you don't know something, learn it. i'd dare not become do this for a living though they've tried to get me to come to a couple dealerships. not enough money in it, bad deal with flat rate pay. i like having one to mess with though just to get my head off the work related b/s. i do this stuff for fun lol. i do disagree with the tooling. i've upgraded quite a bit but most of the time i'm out there with hand tools doing my thing. by the time you pay a shop, you can often times tool up, buy the parts and come out with spending less. the more you do it, the less you'll spend on tools, they'll pile up till eventually you might need one certain tool to do the job. obviously i'm not talking about tool truck tools but decent stuff, mid grade at harbor freight or part house tool sets, that sorta thing. they are actually not bad in my experience. i won't get into how much i've spent on tools over the years but let's just say i have a lot. it all started with a socket set, screw drivers, wrenches and an assortment of pliers and vise grips. i can also tell you from experience, i've done nothing but make my life easier buying the right tools for the job as i've needed to.
Okay, let's get this straight. The O2 sensors in front of the cats are used for mixture control. They cycle between 1V and 0V as the ECU adjusts the mixture rich and lean because the sensor just switches, it does not vary nicely. It can measure rich and it can measure lean. So the ECU cycles between the two. This is normal. The O2 sensors behind the cats are there to figure out if the cats are working. The cats burn all remaining fuel from the exhaust, so the correct output would be for these sensors to indicate a stable lean signal (no extra fuel) close to 0V. If these sensors are oscillating, the cats are dead. Without cats, these sensors should mimmic the front sensors.
I admire you helping keep these high mile vehicles on the road. New ones are getting less and less reliable and more expensive. Old cars get you to same place and have no payment usually.
Side note, if the PCM sees a problem with any of the upstream HO2 sensors, it'll fallback into two possible modes. Open loop, where the entire engine runs in open loop (depends on engine and PCM), or what some readers may refer to as Faulted mode (i'm calling it this because this is what I saw it as in my scanner software I use). In this latter mode, one side of the engine will run in closed loop, but the side with the defective sensor will run in open loop. Depending on the PCM and the scan tool, this fault mode may simply show as being in open loop. Either way, the PCM may occasionally check to see if the sensors may have happened to start acting right and attempt use it again unless the fault persists.
Not only did the transmission shop mess up the sensors and fail to replace the rear main seal, they also let that shifter go out of their shop in that condition. ZERO pride in workmanship.
good diag Ray , I need to pull the trans on my 91 GMC 1500 ,and thanks for the heads up to do the rear seal as well it does make sense its got 240,000 on it .
Anytime you do a big job like that and have everything pulled apart, you change anything that you can while you are in there. For example : Just like changing a timing belt on some cars, do the front seal and water pump too.
I had a 1996 F250 w/7.5L it needed a clutch and the front aluminum cover was leaking, since I had to do both front and rear of the motor I pulled the motor, pulled the heads and checked on the cylinders since I was getting some blowby. Ended up rebuilding the motor. The truck was in good enough condition to last me another 12 years or so why not take care of everything and make the second half of its life a little more enjoyable ( nice RV cam, new intake/Exhaust, heads resurfaced, nice valve job done etc. ) I ended up selling it 6 years later and its living its life on a farm, still going from the last I heard ( it was 4wd w/5speed manual) first year on the farm the guy who bought it went around pulling everyone's animal trailers out of the mud from their back fields as their dually's couldn't handle the excessive rain we had that year. If you're keeping a vehicle, why not do what you need to in order to get better power/mileage and overall performance out of it with the benefit of not having to repair the little things so often.
You could always swap out the down stream 02 and space both down streams out using spark plug anti foulers to jeep the check engine light out from not having cats. Great job fixing that wreck
32:40 I just replaced the rear gasket and plate on my '02 suburban. What sucked is I couldn't get the top transmission bolt out. None of my sockets fit from under the vehicle. I had to remove the intake and remove the bolt by hand.. That was dumb. Anyhow, turns out 4 of the bolts were loose already. Probably didn't help matters.
Are we presuming the missing cats are because they needed to be replaced and weren't because of ??? (cost?). And whomever did that exhaust patchwork to eliminate them did not do a very good job (exhaust leak). I concur with you about the transmission people not doing the rear main seal while they were there. Not too smart or economical (for the truck owner). Thanks for the diag and info about the sensor data. Always good to learn something.
I cringed when you put that box opened end wrench on the front rim. Then I was relieved when you grabbed it before lowering that rig. Enjoyed another vid, Ray!
Nice job untangling that mess. The B1S2 sensor is mimicking the B1S1 sensor, exactly what you would expect with a working downstream sensor and no cat. The engine runs "perfect" (no fuel trim adjustment) with the working upstream sensors.
i dont use mechanics anymore, but even in florida, every mechanic i have ever went to refused to work on a vehicle (especially throwing these kinds of codes) without a converter. I would tell sell the customer 2 converters before I worked on anything else also I have switched plugs also on my car, one for a "purge" valve and one for a "switching" valve. caused all sorts of problems
Do you all have emission testing there? if so, how far back does it go? Strange that the cats have been removed! 😀 I always enjoy a good troubleshooting video!! Thanks
Ray ,this is what happens when you don’t have emission inspection or safety inspection (no catilytic converters ). Maybe it get better fuel mileage with deleted cats. Anyway you fixed the rough running condition. Have a good day Ray
Yes Florida is the Wild Wild West when it comes to safety inspection Emission Inspection what is that we don't care how much pollution comes out of our tail..lol
Years ago I had hours tied up in trying to locate a random short in my dash and then, I found out that transmission shops are bad about re-attaching the body ground straps. Of course I also discovered that you will end up replacing ball joints and tie rod ends without said strap.
I ran into a similar situation, although for me it wasn't the ball joints or tie rod ends that completed the ground path, it was the throttle cable (yes, this was many years ago when carburetors were still around). The metal throttle cable would heat up and bind within its plastic housing. Could have led to a very dangerous situation. The problem was a rusted-out/off body ground strap. Replaced the strap and good to go.
0:45 I woke up this morning with the sundown shining in. I found my mind in a brown paper bag but then........someone painted 'April Fool' in big black letters on a dead 02 sensor.
Wish I could get my 1993 caprice wagon there to check my problems, Runs rich, idles high as well as other problems, changed IAC, O2 sensor, spark plugs, wires etc
Talk to the ones that changed the transition. Since the seals were not replaced. It you changed the seals, aka them if you can bill them the labor costs since they failed to change them and caused an oil leak. I still think there are too many wires in a vehicle. I have a solution for the long wire runs. Have the wires combine in to a box that converts the signals over to Ethernet connection so you can run one cable back to the spit point with another box. You can put power over Ethernet. Would help a lot with diage. The ECM can monitor and tell if a wire is broken. A new entry called wire health.
I was wondering about that too! With no cats the ECM is supposed to be looking for a difference between the upstream and downstream O2 sensors. What I've seen done before is people after they remove the cats is to put a sparkplug "anti-foul" adapter between the tailpipe and the sensor. There are also "Spoof" devices to fool the ECM into thinking all is good when there no cats. I still think there's a piece of this puzzle missing!
@@PhilG999 It should run just fine as long as the upstream O2 sensors are working so that the computer can properly control the fuel air mixture in the cylinders. The missing catalytic converter and or failure of the downstream O2 sensors would only throw a check engine light for the emission system. It doesn’t change anything about how the car runs.
Empty cats on a pre-obd2 vehicle are one thing, but blatantly welding in straight pipes is just asking for trouble. Most shops won’t touch something like that with a 200 foot pole unless they’re putting new cats in. If anything, just find some high flow cats for it.
What exciting content! We are all just on the edge of our seats waiting for anything to happen
We’re using our brains to diagnose 🧠💭
@@RainmanRaysRepairs bot
@@KHALABEEB I detected sarcasm because the emoji doesn’t match the phrasing.
Edit: not a bot, I checked their other comment…just a troll
@RainmanRaysRepairs hi Ray, love your content. I'm joining the industry this year. You've been a big help and big inspiration doing some backyard mechanic work
Hey Ray, it's just amazing how with a little time and effort a good mechanic can work wanders, yes you were right the transmission installer should have replaced the rear main oil seal, but they didn't, we need more mechanics like you, see you next video.
It could be that the owner would not pay for it
33:31 Oh thank jeebus. That wrench in the wheel was giving me anxiety from the moment you set it there! 😂
Same here. Every time the camera panned in that direction I would see that wrench just sitting there.
Great bit of O2 debug correcting the confusion of the mis plugged connectors....confusion defeated !
I am both perplex, and not surprised at all. On how much trouble one mechanic can create and/or ignore when doing one job, that they leave for the next person.
Its like that meme with the roadkill and roadpaint going over, it stating: Its not my job.
Excellent bit of diagnostic work there, Ray. 👍
Wish we had great mechanic like you in my area... awesome video... thank you
you can become one yourself lol. Improvise, adapt, overcome
@@TriforceOfCourage97 If you have the brains...
@@TriforceOfCourage97 It's not just the knowledge but also the right tools and the experience that people pay for.
... And too often overpay for or don't even get.
@@MonkeyJedi99 you're not wrong but they're not complicated to work on 99% of the time. it's fairly straight forward stuff. what makes it complicated is people over simplify things. there's a lot of "mechanics" out there can't diagnose to save their life. they'll just throw parts at a problem till the light goes away. i do my own repairs for this reason. i have been known to take a junk yard bound beater and make it daily driver reliable in my drive way. as an average joe wrenching i can tell you the information is out there if you seek it out. the fuel trims tell the story most of the time. once you figure out the live data stuff it's a matter of nut and bolts. the trick is you have to be able to think your way through a problem and solve it. it's one of those things you either have or don't have. you also have to be able to know when your limits, if you don't know something, learn it. i'd dare not become do this for a living though they've tried to get me to come to a couple dealerships. not enough money in it, bad deal with flat rate pay. i like having one to mess with though just to get my head off the work related b/s. i do this stuff for fun lol.
i do disagree with the tooling. i've upgraded quite a bit but most of the time i'm out there with hand tools doing my thing. by the time you pay a shop, you can often times tool up, buy the parts and come out with spending less. the more you do it, the less you'll spend on tools, they'll pile up till eventually you might need one certain tool to do the job. obviously i'm not talking about tool truck tools but decent stuff, mid grade at harbor freight or part house tool sets, that sorta thing. they are actually not bad in my experience. i won't get into how much i've spent on tools over the years but let's just say i have a lot. it all started with a socket set, screw drivers, wrenches and an assortment of pliers and vise grips. i can also tell you from experience, i've done nothing but make my life easier buying the right tools for the job as i've needed to.
Okay, let's get this straight.
The O2 sensors in front of the cats are used for mixture control. They cycle between 1V and 0V as the ECU adjusts the mixture rich and lean because the sensor just switches, it does not vary nicely. It can measure rich and it can measure lean. So the ECU cycles between the two. This is normal.
The O2 sensors behind the cats are there to figure out if the cats are working. The cats burn all remaining fuel from the exhaust, so the correct output would be for these sensors to indicate a stable lean signal (no extra fuel) close to 0V. If these sensors are oscillating, the cats are dead. Without cats, these sensors should mimmic the front sensors.
Good video, that one needs alot of work. Mounts, exhaust leak, rear main seal just for starters.. thanks Ray
Truly appreciate your diagnostic ability!!!!!!
Bias voltage from the pcm should be around 450 mv, that could explain whaly b1s2 is reading while unplugged.
I always thought you were a genius, this confirms it.
Another great Rainman Ray video, thanks for sharing !
Thanks Dave!
Loved the quality of those rookie welds on the cat deletes. 😂
I sure do miss the phone call noises when ray didn’t own his own shop
Dooba doobalee Doo 😜😜
….and Ray shouting, “someone pick up the phone!” 😂
I admire you helping keep these high mile vehicles on the road. New ones are getting less and less reliable and more expensive. Old cars get you to same place and have no payment usually.
Ray, love the view of the rear main seal. Also great troubleshooting!
Another great video. Now I know what to do to fix my piece of crap. Thanks Ray!!!
Good evening Ray,
Always impressed with your diagnostic skills and knowledge. Where are my Dave sightings the past few videos??? Gravity.
@18:25 I must be mental, suddenly it goes like " ♪♫..ooh darling, save the last -dance- thread for me .. ♫♫♪ " in my head
Another Banger of a vid. Looking forward to see how the Silverado is coming along!
Side note, if the PCM sees a problem with any of the upstream HO2 sensors, it'll fallback into two possible modes. Open loop, where the entire engine runs in open loop (depends on engine and PCM), or what some readers may refer to as Faulted mode (i'm calling it this because this is what I saw it as in my scanner software I use). In this latter mode, one side of the engine will run in closed loop, but the side with the defective sensor will run in open loop. Depending on the PCM and the scan tool, this fault mode may simply show as being in open loop. Either way, the PCM may occasionally check to see if the sensors may have happened to start acting right and attempt use it again unless the fault persists.
Nice diagnoses. Fun video. Thanks
I hope that truck gets some love. It is in good enough condition to drop a few dollars at. Great diagnosis Ray.
Not only did the transmission shop mess up the sensors and fail to replace the rear main seal, they also let that shifter go out of their shop in that condition. ZERO pride in workmanship.
Customer could had refused repair too.
@@BeingMe23 If you believe that one, I have a bridge I'd like to sell to you.
good diag Ray , I need to pull the trans on my 91 GMC 1500 ,and thanks for the heads up to do the rear seal as well it does make sense its got 240,000 on it .
Anytime you do a big job like that and have everything pulled apart, you change anything that you can while you are in there. For example : Just like changing a timing belt on some cars, do the front seal and water pump too.
I had a 1996 F250 w/7.5L it needed a clutch and the front aluminum cover was leaking, since I had to do both front and rear of the motor I pulled the motor, pulled the heads and checked on the cylinders since I was getting some blowby. Ended up rebuilding the motor. The truck was in good enough condition to last me another 12 years or so why not take care of everything and make the second half of its life a little more enjoyable ( nice RV cam, new intake/Exhaust, heads resurfaced, nice valve job done etc. ) I ended up selling it 6 years later and its living its life on a farm, still going from the last I heard ( it was 4wd w/5speed manual) first year on the farm the guy who bought it went around pulling everyone's animal trailers out of the mud from their back fields as their dually's couldn't handle the excessive rain we had that year.
If you're keeping a vehicle, why not do what you need to in order to get better power/mileage and overall performance out of it with the benefit of not having to repair the little things so often.
@@TheWabbit You got that right! I have seen people pull engines and not even change gaskets. How stupid is that?
You could always swap out the down stream 02 and space both down streams out using spark plug anti foulers to jeep the check engine light out from not having cats. Great job fixing that wreck
Men this is way more exciting than playing Russian roulette!!!:):)
Great job, great content and well made video!!!
Thanks for sharing.
It sounded like there was a geiger counter in the cab on the initial startup😊
32:40 I just replaced the rear gasket and plate on my '02 suburban. What sucked is I couldn't get the top transmission bolt out. None of my sockets fit from under the vehicle. I had to remove the intake and remove the bolt by hand.. That was dumb. Anyhow, turns out 4 of the bolts were loose already. Probably didn't help matters.
Are we presuming the missing cats are because they needed to be replaced and weren't because of ??? (cost?). And whomever did that exhaust patchwork to eliminate them did not do a very good job (exhaust leak). I concur with you about the transmission people not doing the rear main seal while they were there. Not too smart or economical (for the truck owner). Thanks for the diag and info about the sensor data. Always good to learn something.
Probably not a trans shop install, but a general repair shop putting in a Jasper reman. A trans shop would know to replace the rear main seal.
This was fun to watch, sometimes the obvious isn’t so obvious. Please do more videos if this owner decides on more work.
I had chili for dinner tonight yum yum 😊😁😍
Thanks!
You're welcome!
I cringed when you put that box opened end wrench on the front rim. Then I was relieved when you grabbed it before lowering that rig.
Enjoyed another vid, Ray!
great video, i would replace one at a time not all at once mess up wiring. and plugging in wrong.
Brilliant as always Ray 👍🏻👍🏻👍🏻🇬🇧
Well done as usual.
thankyou Ray great content,👍, the burnt wiring issue was it repaired,,??
I love what you are doing mat
Nice job untangling that mess. The B1S2 sensor is mimicking the B1S1 sensor, exactly what you would expect with a working downstream sensor and no cat. The engine runs "perfect" (no fuel trim adjustment) with the working upstream sensors.
Welcoming back!
Most Good Transmission Mechanics would have Replaced the Leaky Rear Main Seal, my neighbor is a Transmission Mechanic and does this all the time...
i dont use mechanics anymore, but even in florida, every mechanic i have ever went to refused to work on a vehicle (especially throwing these kinds of codes) without a converter. I would tell sell the customer 2 converters before I worked on anything else
also I have switched plugs also on my car, one for a "purge" valve and one for a "switching" valve. caused all sorts of problems
Oh no you destroyed a perfectly good rubber band mom’s going to get you. 😉😂🤣
Premiere. Not live but he can see your comments
Hi BFT! 👋
@92mrsrdb hello there 👋
Do you all have emission testing there? if so, how far back does it go? Strange that the cats have been removed! 😀 I always enjoy a good troubleshooting video!! Thanks
Put a dab of paint on each side of the connectors. Different color for each run.
Nice job ray!
Ray ,this is what happens when you don’t have emission inspection or safety inspection (no catilytic converters ). Maybe it get better fuel mileage with deleted cats. Anyway you fixed the rough running condition. Have a good day Ray
Yes Florida is the Wild Wild West when it comes to safety inspection Emission Inspection what is that we don't care how much pollution comes out of our tail..lol
Great job 👍
The FLATLINE should speak for itself 😂
Really a jacket Ray!!!!!!!😂
Glad to see Chevy and gmc hasn’t come up with a dash that doesn’t crack 🤔🤣🤣🤣🤣🤣🤣
The dash on my 03 Silverado has no cracks, a few places where the factory paint has been rubbed off.
"It's cold today!" Ray says, how "cold" is it Ray, because it was 8° this morning when I got off of work lol.
I can't believe how much you love tools to remove the dangerous and very hard to remove containing strap to the O2 sensor.😂
OMG I remember open loop and closed loop from pre OBD days
"Look at that tiny 4.8", as if it looks physically different from a 5.3 or 6.0 😂
Years ago I had hours tied up in trying to locate a random short in my dash and then, I found out that transmission shops are bad about re-attaching the body ground straps. Of course I also discovered that you will end up replacing ball joints and tie rod ends without said strap.
I ran into a similar situation, although for me it wasn't the ball joints or tie rod ends that completed the ground path, it was the throttle cable (yes, this was many years ago when carburetors were still around). The metal throttle cable would heat up and bind within its plastic housing. Could have led to a very dangerous situation. The problem was a rusted-out/off body ground strap. Replaced the strap and good to go.
Would it not throw check engine light for failed converter test in monitors?
Kenny Rogers. Nice!
Just had my sierra trans replaced put in the wrong one so they had to do it over.
I take my hat off to you sir, Your most knowledgeable
Rugs are the way to go. Don’t like the color you can change it to whatever suits your style
Good job
0:45 I woke up this morning with the sundown shining in. I found my mind in a brown paper bag but then........someone painted 'April Fool' in big black letters on a dead 02 sensor.
I had to scroll down a bit to find someone who got the reference. Good tune
my canyon truck gave codes until I replaced battery. weak battery caused ecm errors?
Hi whats the green classic next to the white van please .
I don't know if it matters at all but when the codes were disappearing at the beginning your wi-fi signal was dipping way down.
Good ole GM Ac puts out 32 degree F air out vents
Wish I could get my 1993 caprice wagon there to check my problems, Runs rich, idles high as well as other problems, changed IAC, O2 sensor, spark plugs, wires etc
Good day ray and hi to the guys
You could have saved that rubber band when you unpacked that new sensor.
would love to know how cold it is I'm in Florida next week and its only 33f here so if its warming that that with sun I'm happy
“Click it or ticket.” Either Ray went to Texas, or Texas came to Florida! 😊
Talk to the ones that changed the transition. Since the seals were not replaced. It you changed the seals, aka them if you can bill them the labor costs since they failed to change them and caused an oil leak.
I still think there are too many wires in a vehicle. I have a solution for the long wire runs. Have the wires combine in to a box that converts the signals over to Ethernet connection so you can run one cable back to the spit point with another box. You can put power over Ethernet. Would help a lot with diage. The ECM can monitor and tell if a wire is broken. A new entry called wire health.
Wouldn't removing the converters be illegal?
It absolutely IS illegal, and I'd suspect the owner installed some sort of cheat so the PCM doesn't detect it and turn on the check engine light
Another great video. Thanks gang
Thanks Ray good video!
1 hour? I'm never this early. Hi Ray 🖐🖐 love your content man
I'd suggest replacing those wires, Kinda looking like the coating is cracking from engine heat, etc.
Ray inspecting wire harness condition with "Its fine" is GM dealer speak of "Not a Warranty Issue" Standard GM "Quality" lol
Underside of that thing is clean!
Sounds like a Geiger counter in the background. Is that truck radioactive? 😁
It's funny how it runs just fine with no cats.
It runs fine with no dogs, either. 🥲
@williamsquires3070 What the hell was that comment. Oh, let me guess, you are into electric vehicles.
I was wondering about that too! With no cats the ECM is supposed to be looking for a difference between the upstream and downstream O2 sensors. What I've seen done before is people after they remove the cats is to put a sparkplug "anti-foul" adapter between the tailpipe and the sensor. There are also "Spoof" devices to fool the ECM into thinking all is good when there no cats. I still think there's a piece of this puzzle missing!
@@PhilG999 It should run just fine as long as the upstream O2 sensors are working so that the computer can properly control the fuel air mixture in the cylinders. The missing catalytic converter and or failure of the downstream O2 sensors would only throw a check engine light for the emission system. It doesn’t change anything about how the car runs.
@@StrongDreamsWaitHere I know that! Been modding cars for 50 years.
Empty cats on a pre-obd2 vehicle are one thing, but blatantly welding in straight pipes is just asking for trouble. Most shops won’t touch something like that with a 200 foot pole unless they’re putting new cats in. If anything, just find some high flow cats for it.
Good video.
Great video Ray!
Dude 😎 of you squint it's mint 👍
I think at this point, if there's anything I do myself, I'm going to ship my truck from Michigan to Florida to be sure it's done right.
Seems like the exhaust needed to come off for the trans removal. Shocker, now they have an exhaust leak.
The wiring on this entire truck looks like a Bell Telephone box.
10:42
Is that the taco bell bell sound? lmao
There's a missing EVAP hose on the sensor in the intake
It’s going to take an hour of shop time just to write up everything that’s wrong with that junker.
14:05 weld it 😅😅
It just needs new a catalytic convertor and some new o2 sensors ;)
there are a lot of techs the wont work on cars without them.
Is there a point at which you'll have to refuse service when a vehicle has purposely deleted catalytic converters? (Liability, fines, etc.)