2010 Tahoe/Erratic idle (no codes detected)
- Thread starter Peppy
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SNES Avalanche
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OP: https://www.tahoeyukonforum.com/thr...ot-find-the-cause-fuel-pump-injectors.132624/
I've spent 3+ years tracking down this issue and have gone through a bunch of parts.
1. What is your Oil Pressure at warm idle? From the factory they all sat at 40 PSI. (Yours is most likely at 20 at warm).
2. Can you test your catalytic convertors?
In the end I simply bought a Diablo tuner and increased my idle RPMs by 150. Seems to have solved the overall issue and I'm not going to dig further.
I've spent 3+ years tracking down this issue and have gone through a bunch of parts.
1. What is your Oil Pressure at warm idle? From the factory they all sat at 40 PSI. (Yours is most likely at 20 at warm).
2. Can you test your catalytic convertors?
In the end I simply bought a Diablo tuner and increased my idle RPMs by 150. Seems to have solved the overall issue and I'm not going to dig further.
Try resetting the throttle position sensor. It sounds cheesy but it worked for me a couple times when I was having similar problems. I’m in a 2012 Chevy Tahoe so we’re pretty close to the same vehicle. Good luck. Let me know if it worked for you and have a great Christmas !!
Oh yea fyi you don’t need to remove the manifold to change your oil pressure sensor! I did mine in like 10 min including the cleanup.
I use a device called FIXD and it’s great. You can go the cheap route and not pay the premium service but it only does half the options but for 50 bucks it’s work it for the year. It scans the vehicle. It defines the codes and explains what they are and what they do for the car. It gives you a price analysis of how much it will cost to repair it if you go to a mechanic it also gives you the do-it-yourself instructions to repair it yourself. If you want it gives you real time information and you can choose anything any sensor or any part of the car that you want to monitor in real time. It even has this neat little function where you can test your car to see how long it takes you to go 0 to 60. It’s great. I highly recommend it !!
Oh yeah, and it also monitors your maintenance schedule and remind you when it’s time to do certain maintenance on your vehicle. It gives you a list of what needs to be done and how to do it how much the parts will cost or if you had it done in the shop how much it’ll cost it’s an amazing Product and it all goes through your phone on an app
OBSalsoNNBS
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@H2oboyz
I also have a 2012 Tahoe with TPS woes. I did the idle relearn procedure detailed by MikeZ71 instead of using a scanner.
Did the scanner make the difference for you versus the 3min idle procedure? As in, did you NEED the scanner to relearn the throttle?
She's at the dealer right now and they are scratching their heads too. Leaning towards wiring harness.
Thread here:
Throttle Sensors vs Wire Round 7
Been a lurker here since I bought my lady a rather clean 2012 Tahoe LS three months ago. 156K miles. I'm above average mechanically inclined for being a [cough] mellenial, but untill now have always run older vehicles (IE a 263K 97 Burb) for ease of repairs and noted lack of sensor issues...
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