 1997 4runner fast idle problem
On Mar 16, 6:41 pm, "hizar...m" <hizar...m> wrote:
> On Mar 16, 5:42 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
> > <hizar...m> wrote in message
>
> >news:28f40864-8250-4b05-a534-4629587b1c64@e6g2000prf..com...
>
> > > For some reason my 97 4runner is running at 2500 rpm's at idle. I
> > > checked the coolant temperature sensor and the IAC and they both are
> > > checking out fine. The linkage and the throttle body were a little
> > > dirty. A Toyota mechanic has told me that the IAC is probably the
> > > cause. But I just want to make sure, before I buy another one.
>
> > Since you have not mentioned a check engine light, I'll assume that there is
> > none, so the components that control idle will check out electrically.
>
> Correct there was no check engine light.
>
> > How did you check out the coolant temperature sensor and IAC?
>
> > If you have not already done so, remove the IAC from the throttle body and
> > clean it with carb cleaner as it may be sticking.
>
> I have removed the IAC and it appears to opening closing smoothly.. A
> Toyota mechanic told me that cleaning does no good.
>
>
>
> > Also check for cracks, holes, or gaps in the black plastic snorkel between
> > the air filter housing and throttle body.
> > --
>
> > Ray O
> >
Yeah because if it IS the problem and you clean it -- you save
yourself $300-400. Trust me -- I replaced one and I am almost
confident it didn't need done.
On that note -- same w/ your MAF. They're supposedly self cleaning
but I find cleaning mine every oil change is helpful as it's always
dirty each time I have checked and they're expensive to replace as
well. | 
