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Old 12-11-2010, 07:59 AM
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drivinfaster drivinfaster is offline
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Location: in the sticks you piney
 
Join Date: Nov 2007
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Quote:
Originally Posted by crisscross View Post
Does anyone know if intake air temp sensor would cause a missfire? I know def know it would cause a closed loop rich idle, and I guess that could cause a missfire?

Thoughts?
no. i have not come across any instance where the air intake temp sensor caused a misfire. running rich would also not cause a miss. it would bog, run like poo, and co would be through the roof, not hc.

hc is a misfire indicator, so i would be looking faulty ignition (coil/plug/boot), or, if caused by a lean mis, faulty injector.

a cat would not cause a misfire, so i would not worry about that at this time.

find the cylinder that is missing and then do this. swap the coil with one cylinder, and the plug with another cylinder. see if the miss moves. if it does, then you have found the defective part. if it stays at the same cylinder, then you car going to be looking injector or valve issue.

good luck.


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