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Engine idles high some times

Posted: Sat Aug 10, 2013 12:33 am
by Nibbib
So like the title says my car will idle high but normally only happens when I fill the car up at a shell gas station with 92 but other times it will do it if I get on it hard with 2nd and 3rd but normally doesn't happen too often but the car is a 93 touring wagon with 16g turbo air water intercooler 3 inch down pipe and a 5 speed swap

I'm just wondering if anyone has had this issue before and could shed a little light on where to start looking for issue

Thanks, cody

Re: Engine idles high some times

Posted: Sat Aug 10, 2013 1:25 am
by rallyak
I would clean iacv that fixes mine.

Re: Engine idles high some times

Posted: Sat Aug 10, 2013 10:18 pm
by Nibbib
Okay where would the iacv be located which side of the manifold and what would be the best why to clean it

Re: Engine idles high some times

Posted: Sun Aug 11, 2013 8:12 pm
by Legacy777
Did you do the 5spd swap or was it done by a previous owner?

The IAC valve is on the passenger side of the intake manifold and has a 3/4" hose coming off of it into the resonator box.

Re: Engine idles high some times

Posted: Mon Aug 12, 2013 2:37 am
by Nibbib
5speed was done before me and okay thanks and would you just recommend replacing it instead of cleaning it I was reading up in some of it and some people will just replace them instead of cleaning them

Re: Engine idles high some times

Posted: Mon Aug 12, 2013 3:34 am
by rallyak
Replacements are around 200-400 I would just clean it, it's a lot cheaper. I clean mine yearly that's about 50-70k usually every fall.

Re: Engine idles high some times

Posted: Mon Aug 12, 2013 4:33 am
by wtdash
- Off-topic, probably, but are you running any EM - piggyback, Revtronix chip, EJ20G w/Rob Tune, etc? If not, be careful w/the TD05 if you're still running the stock injectors, etc.

Read up on here about using this turbo, as it can max out the stock setup and could cause issue$.

TD

Re: Engine idles high some times

Posted: Mon Aug 12, 2013 10:56 pm
by Nibbib
There is no tune yet and the boost hasn't been increased and what should I use to clean it with

Re: Engine idles high some times

Posted: Mon Aug 12, 2013 11:05 pm
by Nibbib
Also could be a o2 sensor?

Re: Engine idles high some times

Posted: Tue Aug 13, 2013 1:36 am
by wtdash
There's a Thread on here about cleaning the IAC, - use brake cleaner - not WD40-type stuff.

Probably not the 02 as it doesn't do as much on our OBD1 cars as the '95+ OBD2 cars that have 2 of them, but if it's original, I'd replace it as it can help your MPG.

TD

Re: Engine idles high some times

Posted: Tue Aug 13, 2013 2:40 am
by Nibbib
Okay I did found one thing that someone mentioned don't remember who but said putting sea foam in the vacuum hose coming off of it