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Question

1999 subaru legacy wagon 2.2 idles 2500rpm for 10-12 seconds then surges up and down at stops. replaced iac did not help

Submitted: 235 days and 17 hours ago.
Category: Car
Value: $15
Status: CLOSED
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Optional Information

1999 Subaru legacy wagon 2.2

Already Tried:
been to dealer 6 times replaced IAC replaced battery cable checked connector pins

Posted by carguy1 235 days and 17 hours ago.

Info Request

Hi there! Any check engine light on?

235 days and 17 hours ago.

Reply

no check engine light or codes

Accepted Answer

OK, normally a searching idle is caused by a vaccum leak. I would start by spraying carb cleaner around the intake manifold where it bolts to the heads. If the idle increases or smooths out, then you have a vaccum leak and the gaskets will need to be replaced. Try this test and let me know the outcome and we can take it from there.

Picture
Expert: carguy1
Pos. Feedback: 99.3 %
Accepts: 2209
Answered: 3/17/2009

Auto Service Technician

25years experience,certified subaru technician,Nissan factory trained

235 days and 17 hours ago.

Reply

let me try this before I accept the answer OK?

Posted by carguy1 235 days and 17 hours ago.

Answer

Yes, that is fine. We may have to play around a bit to see if we can find the problem. Let me know the results and we can take it from there!

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