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Guest subu luvr

88 spfi wagon occationally hunts for idle

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Guest subu luvr

sitting at stoplight, idling smooth, occationally

it revs up 200 rpm then drops back to where it was

in a 3-5 second cycle

 

 

any ideas? going out to pull the codes now

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Sounds like you have a vaccum leak to me, i'd check all of your vaccum lines, my honda did the exact same thing when i had a cracked vaccum line.

 

-Matt-

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Might want to check the putor codes if you get bored. I thought someone once said that a bad connection on the the engine coolant temp sending unit can raise havoc. Could the air conditioning have anything to do with it? Don't think it was a Sube, but I remember a car that the idle would spike up just a bit before the AC compressor would kick in. Then the putor would again calculate out the correct idle speed. Just guessing for you.

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