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engine idle goes down in neutral
Posted: August 29th, 2009, 11:27 pm
by onebrickshy
Hi,
on my '92 GS, when you put the car into neutral, the idle goes down about 100 RPM, and back up when you put it in gear (with the clutch still in) It doesn't do this on my '94 GS. Anybody happen to know why?
Re: engine idle goes down in neutral
Posted: August 30th, 2009, 1:58 pm
by Mikitu
My 92 GS does the same thing.
Re: engine idle goes down in neutral
Posted: August 30th, 2009, 2:33 pm
by mccabe
so did mine
Re: engine idle goes down in neutral
Posted: August 30th, 2009, 2:58 pm
by mitmaks
vacuum leak?
Re: engine idle goes down in neutral
Posted: September 7th, 2009, 1:01 pm
by _-Night-Shade-_
My 92 did that as well, but I always thought that it was the ecu raising rpms in expectation of the load in gear, in other words it's supposed to do that. It doesn't do that on my 94 but I don't think I've got everything running properly yet...
Re: engine idle goes down in neutral
Posted: September 12th, 2009, 11:54 pm
by TMP39
check your iac it might be dirty i had that problem than took it off and took some intake cleaner to it and it seemed to work fine after. and yea check and see if you havea vacuum leak too. that was also a problem
Re: engine idle goes down in neutral
Posted: September 13th, 2009, 4:21 am
by vansolrick
Mine does it as well. Maybe I should clean my IAC up some more but I know it's pretty clean from the last time I had to take it off. Maybe I have a vac leak somewhere but it makes sense that it would climb in RPMs by about 100 revs just for load purposes when in gear.
Did cleaning your IAC completely stop the rpms from raising when putting the box in gear?