strange idle when warm

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_shaun_

Member +
after my cars been taken for good run if i turn it off and leave it for a few mins then turn it back on again the idle bounces between 1k ish and almost stalling will do this for a min or so till i start driving then its fine.
been doing this for a little bit but havent paid much attention to it till today when my boost gauge stoped working stoped the engine went few tools to have a look at the gauge.
when i started it up was doing its normal bouncing idle almost to a stall point. checking the connections to the boost sensor and took off the vac pipe and the idle just went back to perfect and steady soon as i block the vac pipe it goes back to an iratic idle. any ideas whats causing the idle issue? i run a emu and the map sensor for that is t pieced in to the same line as the boost gauge sensor if that might be effecting anything?

any help be great

cheers shaun
 
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mickyboy

Member +
Been haveing the same problem for a few months now i've changed a few things like the ICV new ECU coolant temp sensor and it still dose it im now down to the throttle position sensor and hope that sorts the problem for me

Also will be changing the 02 sensor incase that has something to do with it
 
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