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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 10-24-2007
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Help

My check engine light came on ... it runs fine but when idling, for the first few seconds, it hunts for the right rpm.

Any ideas?
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  #2  
Old 10-24-2007
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IAC? Vacuum leak? MAF?
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  #3  
Old 10-24-2007
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hahahaa i forgot to mention that this is happening to my 1999 dodge dakota
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Old 10-24-2007
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what does IAC stand for?
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Old 10-24-2007
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idle air controller
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  #6  
Old 10-24-2007
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thanks guys, i'll check it out and see what happens. The more help the better
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  #7  
Old 10-24-2007
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Would a bad O2 sensor do this?
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  #8  
Old 10-24-2007
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I don't think so... How many miles are on it? V6 or V8?
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Old 10-24-2007
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go to autozone and get the code read they will tell you what is wrong with it.
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Old 10-24-2007
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Old 10-24-2007
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maby its jus cause its a dodge??
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  #12  
Old 10-25-2007
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Once the engine is warm I believe the 02s are a factor that the PCM takes into account.

Rich
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  #13  
Old 10-25-2007
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it is a 318 V8 with only 119kms. i live in saskatchewan canada and do not have an auto zone nearby
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  #14  
Old 10-25-2007
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i have asked around at local part stores and no one scannes for free
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