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Old 11-10-2023, 10:36 AM   #1
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Join Date: May 2018
Location: Seattle
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Years ago when dealing with a bad MAF sensor I saw something that may be similar. I replaced the MAF, cleared the codes and fired up the car while watching the Durametric fuel trims. To my horror they were out of range. I thought I wasted a bunch of money. It took many minutes of running at idle for them to settle out and the engine to run smoother.

The lesson I learned, is anytime after to clearing the codes let the car idle for a while before driving it. I'm not sure what your timeline looks like, but this is something to consider.
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Old 11-10-2023, 07:48 PM   #2
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Quote:
Originally Posted by Lowski View Post
Years ago when dealing with a bad MAF sensor I saw something that may be similar. I replaced the MAF, cleared the codes and fired up the car while watching the Durametric fuel trims. To my horror they were out of range. I thought I wasted a bunch of money. It took many minutes of running at idle for them to settle out and the engine to run smoother.

The lesson I learned, is anytime after to clearing the codes let the car idle for a while before driving it. I'm not sure what your timeline looks like, but this is something to consider.
I did DO that let it idle for a while several times, fuel trims specially LT were pretty good till I drove back and forth to work and the gym - I have also noticed at increase speed higher RPMs LTFT are as high as -17 on Bank 2 and bank 1 -15 ALWAYS banks around 2 % points difference.

I m thinking there may be a chance on the 02 sensors not reading right perhaps !! so swapping the upstreams sensors from bank1 to bank2 really curious if BANK 2 MAY STILL BE HIGHER OR NOT

AND also just got the evap purge valve - replacing bank 1 intake gaskets since that has to be removed anyways to get to the valve .
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