03 BUSA

iTrader: (25)

Car has started to have an up and down idle at stops. It can not seem to find a steady idle. I have a air fuel ratio meter and it fluctuates between yellow and red (yellow is nominal and red is lean) doesn't ever get into the green area. I pulled the o2 sensors and the left was whitish brown and the right o2 was a darker brownish red. What do you guys think. I tried to reset the computer and make it relearn itself to no avail. Thanks for the help

mvvette97

iTrader: (18)

what codes do you have? Could be the TPS or even the IAC. Check the codes and let me know.

03 BUSA

iTrader: (25)

No codes, I ythink when they reprogrammed the pcm they eliminated those faults. I know they eliminated the emmissions and rear o2's. I try to unplug sensors while the car is running and no light comes on??

theinstag8r

iTrader: (3)

try cleaning the MAF. mine did the same thing 2 times this summer and i replaced the tps and iac.still had problems. cleaned the MAF and problem went away. i finally got rid of my k&n for a paper filter and havent had a problem since

rocketman442

iTrader: (8)

If the K&N isn't over oiled it doesn't cause problems. I have 3 cars with MAF's, running K&N's in all 3, never had a problem with the maf getting dirty.

theinstag8r

iTrader: (3)

no arguement there, but if they are not perfect your maf could get dirty and you could have problems. just trying to help this guy out

00T\A

I have had both K&N & Paper using paper now because the K&N neted me nothing on a dyno.
But it does not take much dirt flip out the maf.
Try cleaning the maf with a Q tip an clear achohol.