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Old 07-28-2004, 00:21   #4 (permalink)
Refinish King
Civilians

 
Default Re: '87 2.5 4 cyl backfire

Check the Crank Position Sensor:

In fact, take out the module and coils, for the price of the CPS, and the
amount of times they go bad. It's worth just replacing it. While you have it
apart, then check your coils as per manual directions, I don't remember and
do this all the time. Plus, it would take two pages to type it all in.

My bet would be the Crank Position Sensor, especially if it wicked out any
oil when you remove it from the module. Then you might want to consider
swapping the module too.

Refinish King


"Chris B" <cbabchuk@globallivingspace.com> wrote in message
news:99CNc.124834$od7.49243@pd7tw3no...
> Well The problem isn't fixed. I re checked all the vacuum hoses and

stuff,
> and they're alright...... I can't figure it out.
>
> Maybe a coil pack? I dunno. Anyone have any clue?
>
>
> "Chris B" <cbabchuk@globallivingspace.com> wrote in message
> news:U_YMc.110797$od7.101798@pd7tw3no...
> > I'm havin trouble. My fiero was sittin for a few months and recently I

> put
> > it back on the road. Anyways, It was driving fine, but now it's

> backfiring
> > during acceleration. I've checked the plug wires, O2 sensor, EGR, but I
> > really don't have a clue what's goin on. It runs fine under high RPM
> > driving, but if I go to punch it it starts to backfire and as is it's
> > missing or something. It's backfiring out of the carb too. Anyone have

> any
> > clue what's goin on?
> >
> >

>
>




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