I bought a used '01 5.3 and it had an aftermarket K&N filter/cold air tube. I found the throttle plate to gum up every 5k or so probably because it lets a lot more dirt particles through since its claimed to be "high flow". I bought a factory air box/filter and returned it to OEM spec. I no longer have any issues with dirty or sticking throttle plates.
Thank you for the detailed feedback! I appreciate that and will keep that in mind. Thanks for watching! I’ll prob have more videos on the Caddy in the early next year.
My TB had even less gunk on the blade than yours and looked fairly clean, but my buddy mechanic cleaned it anyways and that’s what fixed my low idle issue! He didn’t even remove it cleaner and a toothbrush, he was still very through. Must do if you have a low idle issue!
That is a common "Torx Security" screw with the center post. Bits to fit these are sold in kits that fit a magnetic screwdriver. Used on many items other than vehicles and now, this fasteners is 30 years old, found in industry & military.
I didn't realize the escalade's came with an option for a 5.3. TB issues are a pain. I was chasing my tail this summer trying to figure out what was going on with mine. Ended up swapping it and it's much better now. Good info!
Rusty Wrenches You know I didn’t either, but I believe the earlier models like this one had a 5.3 2WD option and a 6.0 AWD option. I think later on they went 6.0 & 6.2 AWD. Not sure tho. I’m glad this ended up working saved me some money.🙏🏾
You most definitely have to clean the throttle assembly every now & then.. It makes a world of difference... MPG picks up along w/a smoother idle... That's actually the Vortex not being disturbed when it's all cleaned up... The slight build up of gunk disturbs the airflow...
It can be your IAC valve. There are small ports that on idle when your throttle body plate is closed allow you engine to get air in idle. If those are gunked your IAC valve can gunked and stuck in open (too much air) or stuck in closed (too little air). Best thing to do if your engine is high miles is replace the IAC and while you're at it since it's right by it replace your throttle position sensor (TPS) while you trying to clean the throttle.
Got the same problem except my engine has never shut off on me, got 02 Escalade. Cleaned the Mass air flow sensor, might have to clean the throttle body as well. Nice video
Security torx bit, if you don't have one you still have options to remove the sensor. One is to cut a slot into it with a dremel and use a flat tip screwdriver, another is to use a small pair of vice grips on them.
@MrGriffin23 glad to hear it, I figured you got it taken care of, was just throwing that comment out there for the guy 3 years from now watching that's trying to figure out how to remove them.
When i bought my tahoe it would die on turns so I would havr to put it in beautiful and roll while flooring it to keep the engine one. Turned out I just needed to wipe a tiny black line off the blade.
Those screws on the sensors are called Tamper Proof screws. They are designed for unwanted removal of them, which is why you need the Tamper Proof bit heads.
OK I have a wired throttlebody same motor as yours is a 1999 GMC sierra, now whenever I start mine up it will start up fine and then whenever I put it into gear it will die it’s not because it has a bad battery or it’s low on fuel I am a aspiring mechanic. It seems like you have way more experience than I do and I would like to see what you think.
There is no iac....the steppe motor cracks the blade slightly to act as the iac if I recall. ....it sux it's on your truck cause u gotta run dbw. If it was one of your swaps use a throttle cable problem solved. .. dbc all day dbw is boo boo, too expensive!!!''...looks like u helped it though ..
My 2000 Silverado 1500 keeps throwing p0300 p0507 codes. When I start it goes to 1000 jumps to 2000, bogs down, almost dies. Then runs at 1000. It also is pulling.unintended acceleration.I have replaced Spark plugs Spark plug wires Coils tested, they work Clean MAF New air filter Cleaned throttle body New TPS sensor New IAC valve New PCV valve/hose New battery Oil/filter Seafoam fuel/engine And then I had it scanned/programmed.. Bank 1 and 2 too lean. Multiple random misfire. Engine idle too high. Codes cleared for a half a day. The truck ran great, idled great. Then Codes came back with rough idle. Went to get another scan to see if new codes popped. Same codes. Unplugged IAC valve and idle did boy change. Where do I go next? Small town kid just trying to fix first truck. Anything helps. Thank you
It sounds like you are doing all the right things. I know you said you’re from a small town, but it might be beneficial for you to possibly see if you could have a tuner look more in depth in your computer just to kind of see exactly what it’s doing. It may be give you an idea on where to check from there. I’m not sure if those resources are assessable to you or not. I would also keep trying to check the simple things vacuum leaks, clogged fuel filter & injectors etc… Hope that helps and you resolve your issues with the vehicle soon if you have not already.
My Tahoe has been idling rough and when I’m in drive but stopped it starts surging, then when I drive it hesitates could that be a dirty throttle body?
Hey so now the issue escalated thermostat is sticking and engine is knocking I think it's a lifter I just bought the truck so I'm taking it back to the lot today and getting my money back lol as a Ford guy I expected more from GMC lol
You didn’t fix it did you? I saw your fuel gauge needle jump from empty to full when you throttled up toward the end of the video. It’s your fuel pump and fps.
i have a 4.8 when i rev it and let off the gas it seems like it will shut off but doesnt, my tuner said it might be the fuel regulator or the computer in the truck, any suggestions on what i can do?
Could be fuel related. You can do the easy things like change the fuel filter, clean the throttle body, clean/check the maf. A dirty MAF will cause idle issues.
@@MrGriffin23 i cleaned the throttle body that seemed to fix the idle issue, it doesnt turn off anymore but my tuner still says its not idling good, any suggestions?
@@20589 Okay, so your code is essentially what you said. Poor idle code, which is the MAP job to read. Have you cleaned the Idle air control yet? I think its a T20 torx bit. Has an orange O ring, so no gaskets to replace. The stem that closes the air path will easily carbon build, to the point where it wont even rotate. Which means intermediate failure to change position/idle control-recovery. Also be sure to clean the small hole in the throttle plate itself, along with carbon, top-bottom-before and after the throttle plate. Id mention vaccumm leaks but they might even help idle recovery :p
So my truck drops rpm’s while I drive it for a while I bought a new battery and alternator and still drops rpm’s you think it could be the Throttlebody pls help ?
Potentially. It would be more of an issue dropping rpm’s at idle. You can start by seeing if the throttle body blade is gummed up. They make throttle body cleaner. It’s a pretty easy job. But it can be a number of thing on why it drops while driving.
Mines idle in drive, fluctuating between 500-3000 rpms. When i let off my brake in drive its like the cars accelerating itself. When i switch from park to drive my tires squeel and it jumps… any tips can help
Unsure. I would trying the easy stuff first. Like TPS sensor and or if your throttle body is DBW (drive e by wire) then that could be started to fail on you as well l.
Not real sure my tps came with the new throttle body so it would have to be the actual plug. But I also changed my canister for the pcv and it has a hissing sound now really bad so sounds like a vacuum leak some around the purge canister
Not sure. I’d start with the sensors. TPS & IACV. Clean up throttle body as well. See if that helps. Start with the cheap and easiest things. U could also hook up a scan tool in the ODB2 port and see if it throws any codes. Oreilly’s will do it for free.
Yah hasn’t been on long yesterday showing miss fires all over the place just going from cyl to another then showed maf circuit low and map out of range. What ever it is has something to do with miss fire cause you can feel it going down road almost like it cuttin out like a bump in road if you know what I mean
It was stumbling at idle and hesitant under acceleration. Took it to my tuner. He said everything looked fine in the tune, so he suggested taking TB off and cleaning it as it might be gummed up. It resolved the issue. It’s been great ever since.
I bought a used '01 5.3 and it had an aftermarket K&N filter/cold air tube. I found the throttle plate to gum up every 5k or so probably because it lets a lot more dirt particles through since its claimed to be "high flow". I bought a factory air box/filter and returned it to OEM spec. I no longer have any issues with dirty or sticking throttle plates.
Thank you for the detailed feedback! I appreciate that and will keep that in mind. Thanks for watching! I’ll prob have more videos on the Caddy in the early next year.
GM has a TSB on cotton aftermarket filters having too much oil left on filter after service. Common problem!
ASE Master tech since 78, retired.
My TB had even less gunk on the blade than yours and looked fairly clean, but my buddy mechanic cleaned it anyways and that’s what fixed my low idle issue! He didn’t even remove it cleaner and a toothbrush, he was still very through. Must do if you have a low idle issue!
Awesome! Thanks for your feedback!
What year?
@@tipsreviews7476 2001 Yukon with the 5.3 approx 115k miles
@@Roscoschickenwaffles thank you. Did you need an idle relearn with scanner?
That is a common "Torx Security" screw with the center post. Bits to fit these are sold in kits that fit a magnetic screwdriver. Used on many items other than vehicles and now, this fasteners is 30 years old, found in industry & military.
Thank you! I ended up buying a kit some time ago.
@@MrGriffin23 They are the "Fastener / Tool" Cartel forcing us to buy more tools every month!
I didn't realize the escalade's came with an option for a 5.3. TB issues are a pain. I was chasing my tail this summer trying to figure out what was going on with mine. Ended up swapping it and it's much better now. Good info!
Rusty Wrenches You know I didn’t either, but I believe the earlier models like this one had a 5.3 2WD option and a 6.0 AWD option. I think later on they went 6.0 & 6.2 AWD. Not sure tho.
I’m glad this ended up working saved me some money.🙏🏾
Yea my bosses wife had a white one.....
I Learned something new. All be damned
You most definitely have to clean the throttle assembly every now & then.. It makes a world of difference... MPG picks up along w/a smoother idle... That's actually the Vortex not being disturbed when it's all cleaned up... The slight build up of gunk disturbs the airflow...
Thank you for feedback. Appreciate that!
It can be your IAC valve. There are small ports that on idle when your throttle body plate is closed allow you engine to get air in idle. If those are gunked your IAC valve can gunked and stuck in open (too much air) or stuck in closed (too little air). Best thing to do if your engine is high miles is replace the IAC and while you're at it since it's right by it replace your throttle position sensor (TPS) while you trying to clean the throttle.
Thanks for info I’ll keep that in mind. It’s been running great ever since this video.
Those are Torx Security bits. Harbor sells the bits or you may have them in one of your screwdriver bit sets.
Catloco's Garage Thanks Fam! I will have to pick some up.
Ordered
Take a small screwdriver and break off the small tit.
Got the same problem except my engine has never shut off on me, got 02 Escalade. Cleaned the Mass air flow sensor, might have to clean the throttle body as well. Nice video
I hoped it helped or put u in the right direction. Thanks for watching!
Should I avoid this electric trottle style,, ???? And go with the cable trottle
Security torx bit, if you don't have one you still have options to remove the sensor. One is to cut a slot into it with a dremel and use a flat tip screwdriver, another is to use a small pair of vice grips on them.
Thank you. I ended up getting the correct bits that week. It’s all good now ever since.
@MrGriffin23 glad to hear it, I figured you got it taken care of, was just throwing that comment out there for the guy 3 years from now watching that's trying to figure out how to remove them.
My yukon has that same throttle body and this was the only video i could find on it
I hope it helped. Thanks for feedback!
You can get those security torx bits at Harbor Freight
Thanks I picked some up shortly after the video. Appreciate it!
The torx bit you need is a safety torx peat
Thanks! This video a few years old now. I ended up getting the bits the next day.
That screw requires a "Security" bit, my dude. They're found often times fastening things that a factory doesn't want people taking apart.
Yep! Ended up fixing it shortly after. Thank you!
🤣
When i bought my tahoe it would die on turns so I would havr to put it in beautiful and roll while flooring it to keep the engine one. Turned out I just needed to wipe a tiny black line off the blade.
Thank you for feedback and watching. Help me and others as well!
Will try tomorrow. Great video
I hope this helps. Again, this is only one option and it worked for me.
Those screws on the sensors are called Tamper Proof screws. They are designed for unwanted removal of them, which is why you need the Tamper Proof bit heads.
I got it all figured out the next day. Thank you!
good fix mr griffin👍
Mean Gene Customs Thanks MGC! Hey, new nick name🤷🏾♂️
@@MrGriffin23 no prob cool with me 👍
PROBLEM SOLVED 👍🏾👍🏾👍🏾
Yessir!!!
OK I have a wired throttlebody same motor as yours is a 1999 GMC sierra, now whenever I start mine up it will start up fine and then whenever I put it into gear it will die it’s not because it has a bad battery or it’s low on fuel I am a aspiring mechanic. It seems like you have way more experience than I do and I would like to see what you think.
Well I’m no mechanic. Lol! But it could possible be throttle position sensor or Idle air control valve. I would start there.
His mechanic mentioned that he could bump up his idle. Does anyone know how to do that? I have a scan tool, but I don’t see anything in there to that.
It has to be fine in the tune thru HP Tuners or whatever software you are using.
99 chevy silverado 5.3 start and idle but wen put in gear it dies
Not sure on that one. Could be a tuning issue.
It was a valve stuck in the Tran making the convertor engage as soon as shift. A piece of metal was preventing it
@@BroiBoLs Glad you figured it out. I would've of guessed that.
There is no iac....the steppe motor cracks the blade slightly to act as the iac if I recall. ....it sux it's on your truck cause u gotta run dbw. If it was one of your swaps use a throttle cable problem solved. .. dbc all day dbw is boo boo, too expensive!!!''...looks like u helped it though
..
Ahh! Ok makes sense! Yeah, it’s running a lot better.
My 2000 Silverado 1500 keeps throwing p0300 p0507 codes. When I start it goes to 1000 jumps to 2000, bogs down, almost dies. Then runs at 1000. It also is pulling.unintended acceleration.I have replaced
Spark plugs
Spark plug wires
Coils tested, they work
Clean MAF
New air filter
Cleaned throttle body
New TPS sensor
New IAC valve
New PCV valve/hose
New battery
Oil/filter
Seafoam fuel/engine
And then I had it scanned/programmed.. Bank 1 and 2 too lean. Multiple random misfire. Engine idle too high.
Codes cleared for a half a day. The truck ran great, idled great. Then Codes came back with rough idle.
Went to get another scan to see if new codes popped. Same codes. Unplugged IAC valve and idle did boy change. Where do I go next? Small town kid just trying to fix first truck. Anything helps. Thank you
It sounds like you are doing all the right things. I know you said you’re from a small town, but it might be beneficial for you to possibly see if you could have a tuner look more in depth in your computer just to kind of see exactly what it’s doing. It may be give you an idea on where to check from there. I’m not sure if those resources are assessable to you or not. I would also keep trying to check the simple things vacuum leaks, clogged fuel filter & injectors etc…
Hope that helps and you resolve your issues with the vehicle soon if you have not already.
I know it's a little late but that sounds exactly like a vacuum leak somewhere
My Tahoe has been idling rough and when I’m in drive but stopped it starts surging, then when I drive it hesitates could that be a dirty throttle body?
It could or possibly a bad Idle Air Control Valve.
@@MrGriffin23 it was my sparks plugs, not just that my coils and wires were falling apart 😐
@@WhiteTahoe07 Oh man! Glad you figured it out. Sorry for late reply.
@@MrGriffin23 you’re good, and I also had to get a new distribution box because my ignition switch keep flipping while the truck was on
What do you mean it’s not going to I just barely clean mine for the first time in an 05. Mine was half is gunky is yours if that
?
Huh??
When I start mine up it stays at a high idle,3000 rpm could it be the throttle body ?
Possibly. Could be TPS or IAC as well.
After you clean the throttle body you have to do a idle learn reset with the computer
Can the mass air flow sensor cause my 2004 gmc 1500 z71 to have issues with idling properly
Yes it can, but more than likely it would also act up while driving.
@@MrGriffin23 yea it did it the other day thanks man glad it's a 80 $ fix
@@scottmoebius6136 Awesome! Hope that fixes it. Keep me posted.
Hey so now the issue escalated thermostat is sticking and engine is knocking I think it's a lifter I just bought the truck so I'm taking it back to the lot today and getting my money back lol as a Ford guy I expected more from GMC lol
So my truck is running under 1rpm. It dies out. Also when make a turn at the gasstsion to go to a pump it dies. Can anyone help pleaseeee
What u mean at gas station?
Same problem… truck runs fine then at a stop sign or light it dies .. it seems to be dropping rpms way below .. voltage drops with it too ..
@@MrGriffin23 like pulling to a pump or a parking spot. It drops rpm low
@@Jd-gi3ku same
You didn’t fix it did you? I saw your fuel gauge needle jump from empty to full when you throttled up toward the end of the video. It’s your fuel pump and fps.
It did fix it. Been running great ever since.
i have a 4.8 when i rev it and let off the gas it seems like it will shut off but doesnt, my tuner said it might be the fuel regulator or the computer in the truck, any suggestions on what i can do?
Could be fuel related. You can do the easy things like change the fuel filter, clean the throttle body, clean/check the maf. A dirty MAF will cause idle issues.
@@MrGriffin23 i cleaned the throttle body that seemed to fix the idle issue, it doesnt turn off anymore but my tuner still says its not idling good, any suggestions?
@@20589 change plugs yet? We often overlook the simple stuff
@@DarkLinkAD new plugs, new gaskets, it gives me p0106 code
@@20589 Okay, so your code is essentially what you said. Poor idle code, which is the MAP job to read.
Have you cleaned the Idle air control yet? I think its a T20 torx bit. Has an orange O ring, so no gaskets to replace.
The stem that closes the air path will easily carbon build, to the point where it wont even rotate. Which means intermediate failure to change position/idle control-recovery.
Also be sure to clean the small hole in the throttle plate itself, along with carbon, top-bottom-before and after the throttle plate.
Id mention vaccumm leaks but they might even help idle recovery :p
So my truck drops rpm’s while I drive it for a while I bought a new battery and alternator and still drops rpm’s you think it could be the Throttlebody pls help ?
Potentially. It would be more of an issue dropping rpm’s at idle. You can start by seeing if the throttle body blade is gummed up. They make throttle body cleaner. It’s a pretty easy job. But it can be a number of thing on why it drops while driving.
@@MrGriffin23such as
Mines idle in drive, fluctuating between 500-3000 rpms. When i let off my brake in drive its like the cars accelerating itself. When i switch from park to drive my tires squeel and it jumps… any tips can help
Unsure. I would trying the easy stuff first. Like TPS sensor and or if your throttle body is DBW (drive e by wire) then that could be started to fail on you as well l.
Blown brake booster
Did you ever find the problem?
Did you ever find the issue having similar symptoms
Vacumm leak. Mine was at the fuel injectors on bank 1. Reseat them with new o rings. Problem solved
I have a new throttle body and now it revs up when I come to a stop. It's a silverado
I wonder if something to do with either the IAC or TPS sensor.
Not real sure my tps came with the new throttle body so it would have to be the actual plug. But I also changed my canister for the pcv and it has a hissing sound now really bad so sounds like a vacuum leak some around the purge canister
mine is the complete opposite! I come to a stop and it wants to die. I go from park to revers or drive and it wants to die. '03 silverado
That def sounds like air flow issues I hope! Did you clean your throttle body yet?
Change the maf?
Did you find why the engine light came on?
I forgot what it what it was, it thru a code that we cleared.
It's a security torx...
Thank you! Old video, I ordered correct tool the next day.
When I give my 5.3 just a little tap of the gas at idle is holds then drops what’s going on?
Not sure. I’d start with the sensors. TPS & IACV. Clean up throttle body as well. See if that helps. Start with the cheap and easiest things. U could also hook up a scan tool in the ODB2 port and see if it throws any codes. Oreilly’s will do it for free.
@@MrGriffin23 I did hook up my snap on scanner and nothing came up
You find the issue mine is doing that now
@@mvngel818 02 sensors
Those are called security torx
Thank you! I found that out the day of and ordered the correct tools that day.
Did you have check engine light on?
No I didn’t.
@@MrGriffin23 if you didn’t unhook the battery and removed the throttle body that can happen
Security torx
Thanks! It was resolved the next day.
@@MrGriffin23 got to love running into those surprises in the middle of a fix!
@@AZHerps Man! Too many parts runs… part of the game.
That’s horribly dirty wow I clean mine once a month ! Ugh check your spark plugs as well I can only imagine
Yeah it was. I will check those as well. Thank u!
Can I clean without removing it
Not all, but you can get a lot of it clean.
Good one 👍🏻
👍🏾
Mine is so erratic don’t know what the hell almost to bad can’t stop
Have u tried cleaning it?
Yah hasn’t been on long yesterday showing miss fires all over the place just going from cyl to another then showed maf circuit low and map out of range. What ever it is has something to do with miss fire cause you can feel it going down road almost like it cuttin out like a bump in road if you know what I mean
engine light go out or what was that about ? unhooked the battery and let it reset work ?
It was stumbling at idle and hesitant under acceleration. Took it to my tuner. He said everything looked fine in the tune, so he suggested taking TB off and cleaning it as it might be gummed up. It resolved the issue. It’s been great ever since.
Mine go from 800 to high 3000
That's called a security torques
Thanks! This video a few years old now. I ended up getting the bits the next day.
Tamper proof torx
Vice grips
In a pinch, sure.
👏🏽👏🏼👏🏻
🙏🏾🙏🏾🙏🏾
Tamper-proof Torx
Yep got it. Thank u!
Clear the code.
Appreciate it! Cleaning it work. It’s been great since then.
You clear the code it's gonna come back if there's a problem gotta fix the problem
lets make 2020 a great year didnt age the best huh? lol
Well, yes and no! For med it went pretty good, for others possibly not. I made the best of it.
That sign off didn't age well, "let's make 2020 a good a$$ year!" 😂😢🫡
🤷🏾♂️😂