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R Chassis Technical discussion related to the R Chassis such as the R31, R32, R33, R34, and R35.


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Old 08-28-2017, 07:38 PM   #1
emericareaper2
 
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R32 RB20DET odd idle issue

Hopefully I can get some help with my R32! Car runs & drives fantastic. Except for this odd idle issue. It acts the exact opposite of how it should. On a cold start, it has a very low idle. But at operating temp & coming off throttle, it has a much higher idle around 1500 rpm. When warm, it was stay around that for a few seconds, then very slowly come down to around 1k rpm.
I haven't looked into the issue at all yet. Boost leak? AAC valve? Throttle position sensor? Just wanted to get some ideas before I start digging into it.
Thanks!
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Old 09-20-2017, 05:07 PM   #2
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Definitely check for boost/vac leaks. Another thing to check is your coolant temp sensor
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