Re: 1999 ford explorer cold idle problem
You think thats why the sticker states " IDLE NOT ADJUSTABLE"
If you have problems its something else, esp. with newer cars
They trip a CEL when you fart :-)
Engine (idle) problems and no "CEL" is usually dirt related.
IAC, injectors, MAF or t-body dirty
"Fred V." <email@example.com> wrote in message
> Hi group
> Found the problem. I took off the hose from the air
> cleaner to the throttle body and found
> the throttle plate very dirty. After a thorough cleaning the idle went way
> up. This was probably from me fooling with the base idle screw over the
> years. Then I cleaned the idle air bypass valve (also very dirty but not
> stuck). Finally I reset the base idle and TPS voltage. Now the motor purrs
> like a kitten!.
> "Fred V." <firstname.lastname@example.org> wrote in message
> >I wonder if this is the probem with the idle lately on
> > my 89 Mustang 5.0. I'm having the same problem.
> > Fred
> > <email@example.com> wrote in message
> > news:firstname.lastname@example.org...
> >>I have a 1999 Explorer sport 4.0 SOHC. When it is cold outside (below
> >> 50 degrees)and the car sat overnight or sat for several hours it
> >> wouldn't idle worth a darn, would rev up real high then sputter then
> >> idle high again, and it would die . It would do this for about 3 or 4
> >> minutes then would idle great. The check engine light was on codes said
> >> bank 1 bank 2 fuel too lean. We changed the following IAC, O2 sensors,
> >> egr valve, air filter, spark plugs,mass air sensor,fuel filter.
> >> We changed the o-rings(gasket) on the intake and it FIXED the problem.
> >> The o-rings are rubber(like a thick rubberband) and when the motor is
> >> cold the the rings were hard and it caused a vaccuum leak, and when the
> >> motor warmed up they loosed back up.
> >> You can purchase these o-rings from the dealer you will need both top
> >> and bottom gaskets
> >> bottom rings run about $11 or $12, and the top gasket is $7 or $8.