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P1508 killing me

 
Old 05-23-2017, 01:46 PM
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P1508 killing me

I REALLY NEED HELP how do I fix this ? Car idle is way off . Chilton book says "idle speed control low ". I have replaced the iacv .no luck.
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Old 05-23-2017, 01:49 PM
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clean the thorttle body

unplug the battery and plug it back in after a few minutes.
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Old 05-23-2017, 01:53 PM
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I'm impressed

I'm glad there r people like u that are willing to help . I'll clean the throttle body and cross my fingers.
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Old 05-23-2017, 03:07 PM
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Finger cross didn't work.

Cleaned throttle body .... No change . Still have the fluctuating / surging idle when driving when foot off gas and slowing .low idle in park.
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Old 05-23-2017, 03:18 PM
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Did you happen to replace it with an OEM IACV? If that didn't fix it, you may have a vacuum leak somewhere. Also be sure to check that the intake hose is still intact
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Old 05-23-2017, 03:22 PM
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Got the iacv valve from salvage ....cleaned it up as well as possibly could be . Intake hose in tact . Will do another check for vaccum leaks.
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Old 05-25-2017, 01:58 PM
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Leak free

I did another check for vacuum leaks I'm completely leak free tight as hell .any other suggestions you can think of are welcome
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Old 05-25-2017, 01:59 PM
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A NEW IACV perhaps
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Old 05-25-2017, 02:01 PM
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Any thoughts on where to find one that is new I haven't been able to in my neck of the woods consider myself lucky to find the one at the Salvage yard
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Old 05-25-2017, 02:09 PM
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I might also add that every once in awhile it seems to catch and seem like it's right again I can't really explain the intermittent nature of what's going on
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Old 05-25-2017, 02:11 PM
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Old 05-25-2017, 03:34 PM
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Could it be stuck carbon on EGR? Try cleaning EGR maybe?
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