matt_linegar wrote:Hi
On cold start the idle idle on my MY04 GT is unusually high, around 1500rpm. A quick blip of the throttle immediately restores it to a normal level. Idle is normal on hot starts.
Is this normal?
Also, when the engine is hot and the outside temperature is high with the air con on and and in D the idle tends to hunt between 500-1000rpm. It never stalls but again seem unusually, is this also normal?
Matt
I have this issue too and my local Subaru stealership charged me for diagnostic time + upper cylinder cleaner + neutral switch over the first two consultations. I fitted the the neutral switch myself after the second visit and sent it back for the third time to have the car 'relearn the idle' but nothing really changed to be honest. I wouldn't describe it as normal as I never had the issue before, but I'd guess it's a sensor issue. The problem is I don't like swapping everything to fix the issue as it's an expensive way to go about it, hence I asked Subaru to diagnose it but half the mechanics out there don't know much more than the DIY enthusiast. Keep me posted if you figure it out. I haven't changed the O2 sensor as yet.
I should add that my engine hunts for idle every time I drop into neutral too...
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