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Rough idle!!!!!!!!!!!!! Help!!!!!!!!!!!!!!

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Old Apr 2, 2010 | 12:03 PM
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Fastdriver1992's Avatar
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Default Rough idle!!!!!!!!!!!!! Help!!!!!!!!!!!!!!

my friends car is having a problem. the recently has had an intermitting rough idle. i pulled all the plugs and they were all black so i cleaned them and it did not solve the problem. there is no 02 error code. but there is the following codes

bank1 and bank2 are 2 lean
mis fire
and its says that fuel bank 2 is shifted lean!!

what could cause all of this!!!
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Old Apr 2, 2010 | 12:20 PM
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I have had a problem with my MAF getting oily from the K&N on one of my cars. Used to give me lean codes. cleaned it and put a paper filter in and the problem went away. Can't help you with misfires. Does it tell which one or is it giving you codes for all of them?
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Old Apr 2, 2010 | 12:38 PM
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Were the plugs gapped to spec? How did the plug wires look?

If you go through the trouble of pulling all the plugs, I don't see why you wouldn't replace them...
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Old Apr 2, 2010 | 06:57 PM
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E plugs were changes to the ngk tr55 plugs like 2months ago. I will check the maf because he has had the k&n air filter in the car for also about a month. What do u recommend cleaning the maf sensor with?
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Old Apr 2, 2010 | 07:08 PM
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They sell a MAF cleaner in a spray can. also check and make sure all the hose clamps for the intake are tight. That could cause a lean code too.
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Old Apr 3, 2010 | 05:35 PM
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Originally Posted by Fastdriver1992
my friends car is having a problem. the recently has had an intermitting rough idle. i pulled all the plugs and they were all black so i cleaned them and it did not solve the problem. there is no 02 error code. but there is the following codes

bank1 and bank2 are 2 lean
mis fire
and its says that fuel bank 2 is shifted lean!!

what could cause all of this!!!
OMG!!!!!!!!!!!!!!!!!PUT MORE EXCLAMATION POINTS!!!!!!!!!!!!!!!!!!!!

Then get a fuel pressure gauge and see if the fuel press is correct!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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