Re: 1990 Grand Am, performance problem -- exhaust, MAS?

check your trouble codes and go from there.
"William Rowe" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> you could have a back oxyger sensor and or a tPS throttle position sensor
!!
> does you service engine light come on or andyother indecator light???
mail
> me back
> Bill
> ~~~~~~~~~~~~~~
> 1989 Chevy S10 Blazer
> 4.3L
> 22700.00 Miles and runs great !
> ~~~~~~~~~~~~~~~~~~~~~~~
> <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
> > Hello everyone,
> > I have a 1990 Grand Am (tech 4 2.5L), it runs, but doesn't accellerate
> right
> > any more, and the gas milage is getting bad.  It seems like an exhaust
> > problem, and I'm suspecting the catalytic converter, or the MAS (Mass
> > Airflow Sensor).  I tried taking the catalytic converter off to see how
it
> > would run without it (isolate the problem before I shell out $70), but
the
> > bolts are rusted on.  The exhaust pipe does change the airflow while the
> car
> > is just sitting there, and there's black stuff in the tailpipe.  My car
> > doesn't burn oil, just had the sparkplugs, airfilter changed, and the
oil
> > was changed last month too, but it's black again.
> >
> > The performance actually goes up and down, sometimes while I'm driving,
it
> > will run well, sometimes it's in the gutter.  I've also noticed a little
> bit
> > of clicking, when I rev the engine in neutral, and it almost stalls if I
> rev
> > it up in neutral, and then take my foot off.
> >
> > I'd really like some ideas from people, even not particularly relating
to
> > this car.
> >
> > Thanks,
> > Carl Busjahn
> > busjahn(nospam)@bellsouth.net
> >
> >
>
>