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Idle sky rocket after a hard run...
Posted: Tue Apr 15, 2008 7:09 am
by smh0101
So, after a semi-hard freeway run the idle launches itself up to about 3k.
Like, if I push in the clutch the rpm goes up to about 3-3.25k
Its kind of annoying. Any thoughts? Is the IAC valve sticking or something?
Posted: Tue Apr 15, 2008 7:26 am
by PhyrraM
clutch switch, idle switch, or possibly a bad TPS?
Do you have a way of running Vikash's scan tool or even teh VWRX one?
Posted: Tue Apr 15, 2008 7:27 am
by smh0101
Not really...
I could try and replace the TPS with the one off my old engine... I suppose...
Posted: Tue Apr 15, 2008 7:29 am
by smh0101
Ya know... after I blip the throttle it goes back down to normal...
I'll try the tps
Posted: Tue Apr 15, 2008 7:29 am
by PhyrraM
If you replace it you will probably need a digital multi meter to set it properly.
Safer to swap the whole throtlebody.
Posted: Tue Apr 15, 2008 7:30 am
by smh0101
Hrms... Okay... I suppose I could do that... How hard would that be?
Posted: Tue Apr 15, 2008 7:34 am
by 555BCTurbo
Just change the entire throttlebody...
Check for vacuum leaks too!
Posted: Tue Apr 15, 2008 7:37 am
by smh0101
555BCTurbo wrote:
Check for vacuum leaks too!
I had enough of those!!!
Re-did a ton of vac lines to fix some...
There was one other issue... when I was up in the upper rpms in 4th gear it would cut like fuel cut then continue up the rev range.
Me redoing the coffee cup mod fixed that though... it had some thing to with it because it went away after that.
Posted: Tue Apr 15, 2008 7:38 am
by 555BCTurbo
smh0101 wrote:
Me redoing the coffee cup mod fixed that though... it had some thing to with it because it went away after that.
Metered air leak...
Posted: Tue Apr 15, 2008 7:40 am
by smh0101
Gotcha... I re-did it with brass fittings and lots of JB Weld and black paint to fix it.
Posted: Tue Apr 15, 2008 7:44 am
by 555BCTurbo
smh0101 wrote:Gotcha... I re-did it with brass fittings and lots of JB Weld and black paint to fix it.
Ah yes...nothing like good ole' black paint to fix everything!
Posted: Tue Apr 15, 2008 7:45 am
by smh0101
hahaha... lol Yup!
Does look better though!
Posted: Tue Apr 15, 2008 7:54 am
by asc_up
Hey! I painted mine black, too. So no hating...
Posted: Wed Apr 16, 2008 3:32 am
by ericem
If you blip it and it comes back its most likely the IAC valve. My car did that and sometimes low idle. Sprayed throttle body cleaner which was made for IAC valves as well (ones that don't say that are bad) or wd40 works as well.
Posted: Mon Apr 21, 2008 4:39 am
by smh0101
FIXED!
So after spraying the SHIT out of the IAC Valve... It didnt do a damn thing
So I replaced the throttle body...
Whalah! All is well now... and runs quite nicely I might add!
Posted: Mon Apr 21, 2008 7:10 am
by 555BCTurbo
smh0101 wrote:
So I replaced the throttle body...
I won't even say it
Posted: Mon Apr 21, 2008 7:36 am
by smh0101
Say what? I must be too tired to get it...
Posted: Mon Apr 21, 2008 7:39 am
by 555BCTurbo
smh0101 wrote:Say what? I must be too tired to get it...
That I was right lol
Posted: Mon Apr 21, 2008 7:48 am
by smh0101
Oh... Yeah... you and Phyrra were
I guess that means TPS was going bad?
Posted: Mon Apr 21, 2008 7:50 am
by 555BCTurbo
smh0101 wrote:
I guess that means TPS was going bad?
Quite possibly...also, your throttlebody could have been getting stuck somehow
Posted: Mon Apr 21, 2008 7:52 am
by smh0101
The throttlebody seemed fine... It seemed to flip back to normal just fine...
Posted: Mon Apr 21, 2008 6:01 pm
by Legacy777
Did your TB have the adjustment screw for the air bypass on the top of it?
http://www.main.experiencetherave.com/subaru/images/tb/