Davidq

This is a recent problem, 2 days tops. Sometimes when I start the car
it starts fine but then dies. I have to keep my foot on the gas to
keep it going. When I am driving and I slow down the rpm's drop fast
and the car can stall. After driving a while it seems to be fine, but
it does this even when the engine is warm. Other times it starts and
drives fine, although it may idle a bit low (under 500 rpm). It is a
'99 Explorer qith about 109K miles. Any ideas would be greatly
appreciated. Thanks.

Mikepier

It's probably the IAC valve, located directly on top of the intake
manifold ( below the plastic shroud). It is responsible for keeping the
car running at idle. Remove it and clean it with a solvent. If it
still does not work, get a new one at your local auto parts store.
It is a common problem.

Beeper

I agree. IAC. I gave mine an oil bath in the plunger area when it gave out.
It's been running great since. Same symptoms as you.
"Davidq" <david.quillen@ppkm.org> wrote in message
news:1113010725.728861.284730@z14g2000cwz.googlegroups.com...
> This is a recent problem, 2 days tops. Sometimes when I start the car
> it starts fine but then dies. I have to keep my foot on the gas to
> keep it going. When I am driving and I slow down the rpm's drop fast
> and the car can stall. After driving a while it seems to be fine, but
> it does this even when the engine is warm. Other times it starts and
> drives fine, although it may idle a bit low (under 500 rpm). It is a
> '99 Explorer qith about 109K miles. Any ideas would be greatly
> appreciated. Thanks.
>

Mapanari

"Davidq" <david.quillen@ppkm.org> wrotenews:1113010725.728861.284730
@z14g2000cwz.googlegroups.com:

> This is a recent problem, 2 days tops. Sometimes when I start the car
> it starts fine but then dies. I have to keep my foot on the gas to
> keep it going. When I am driving and I slow down the rpm's drop fast
> and the car can stall. After driving a while it seems to be fine, but
> it does this even when the engine is warm. Other times it starts and
> drives fine, although it may idle a bit low (under 500 rpm). It is a
> '99 Explorer qith about 109K miles. Any ideas would be greatly
> appreciated. Thanks.
>
>

Sounds just like what happened with an older car and a plugged up catalytic
converter.
A muffler shop dropped it and installed a "test pipe" and walla! Giddyup and
Go!

--
---Mapanari---

Jessie97XLT

David,

I had the same problem with my 97 XLT, but the speed odometer was working
intermidly, I found out that the problem was a sensor on the transmission,
it has a wire going to it, I believe it is secured by one or two screws. I
had mine replaced and the truck ran fine after that.

Jessie97XLT