Surging idle, running rich, not TPS, suggestions?
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Too old for this
Joined: Oct 2009
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From: Denver, CO
Surging idle, running rich, not TPS, suggestions?
So I've been having an unstable idle problem. After sitting at idle for a little (anywhere from 2-20 secs) the AFR will drop suddenly. The time seems to be shorter when the electric load is higher. AFRs are usually about 16 at idle; they drop suddenly to 10-12 and the idle hunts all around and about 1 in 10 times it flat out stalls. I assumed it was the TPS, but after resetting it (it was a bit off) the problem hasn't changed. Ideas?
Thread Starter
Too old for this
Joined: Oct 2009
Posts: 488
Likes: 0
From: Denver, CO
No and no. I have monitoring lights for the ecu though and it isn't throwing any codes. I'll look up how to check the coils, but I'm not sure how that would change the fuel mixture.
Definitely need new plugs now that you mention it though... :/
Definitely need new plugs now that you mention it though... :/
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