Philthy - can you point me to the proper scanner to get the fault
codes. I keep getting told that OBD2 scanners won't work on my 94 GP.
But, surely, SOMETHING can be plugged into the OBD connector and tell
me what's wrong.

Thanks so far for all the info.

Tim

philthy wrote:
> bad injector killing the pcm driver
> failed oil pressure sensor causing fuel pump kill
> factory alrm system shutting down puter failure to properly maintain vehicle such as plugs,
> wires and air filter, fuel filter too
> but the first thing to do is pull fault codes
>
> wrote:
>
> > Forgot to mention it's a 3.4L. And, working the throttle only just
> > barely keeps it running and running very roughly at that. Thanks for
> > the help so far.
> >
> > jeffcoslacker wrote:
> > > Sounds like a catastrophic vacuum leak to me, or it's not sensing intake
> > > air volume correctly, as you said...Make sure the PCV or other large
> > > vacuum lines aren't unplugged, depending what motor you have it could
> > > have a massive intake gasket leak...
> > >
> > > But you're on the right track, they throttle way up like that when
> > > there's too much air in the cold start mixture. Could be the IAC also,
> > > not being able to get it into a rich cold engine start idle...can you
> > > keep it running by giving it throttle or no?
> > >
> > > EGR stuck open would also do this...
> > >
> > >
> > > --
> > > jeffcoslacker
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