> Your description, about when the problems occur, sure sounds like symptoms
> that happen on fuel injected engines which are caused by a vacuum leak.
> As extra air enters the intake manifold through the vacuum leak, the
computer
> compensates by injecting more fuel. Fuel economy drops and the engine
speed
> goes up. The computer tries to lower it with the IAC sensor. If the leak
> is too large,
> the idle cannot be controlled. A code may or may not be set.
>
> Being a intermittent problem, I would suspect a cracked vacuum hose (from
the
> MAP, from the PCV valve, etc.) or a sticking PCV valve. Carefully inspect
> all hoses.
> If all hoses are ok, replace the PCV valve (very inexpensive) and check
for
> a leaking
> intake manifold gasket. One way is to spray a little water on the gasket,
> and if the
> idle speed changes, then the gasket is leaking.
>
> I've read where Tim thinks it's the crankshaft position sensor. It might
> still be but I would have thought that, if your motor started, you would
be experiencing
> hesitation and misfiring problems as well.
I thought it may be a vacuum leak also, but the scan tool showed a very
solid and constant vacuum reading. The PVC valve is a mere month old. I
appreciate the info you have provided throughout this, very informative.
Thanks again Bob(and everyone who helped)..........I actally spent the
entire day driving around(truck ran simply awesome too!!!) looking at GenIII
4x4 Extend Cab Dakotas........man they sure are sweet ;)
Kyle
93 Dakota 4x4 V6
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:59:08 EDT