Did you pull the code?
I had an 88 3.9 with this symptom it turned out to be a dirty temp sensor
connector.The 2 pin that sends reading to controller not single pin that is
used for gauge.
>From: "RayB" <bpracing@worldnet.att.net>
>Reply-To: dakota-truck@dakota-truck.net
>To: <dakota-truck@dakota-truck.net>
>Subject: DML: RE: o2
>Date: Wed, 2 Apr 2003 13:54:41 -0500
>
>
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net
> > [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of Allan
> > Williams
> > The story: I removed the rattling contents from exhaust. I
> > believe that I
> > upset the o2 reading as now my Dak is spughing black smoke under hard
> > acceleration. It is obvisously running way rich. O2 sensors are $70, I
> > don't want to spend $70 and not fix the problem. Could there be any
> > other cause here? This started right after the cat guts removal...
>
>Before replacing the O2 sensor, try resetting the PCM. If you haven't had
>the battery disconnected since you removed the cat it will take some time
>for the PCM to adapt to the new conditions.
>
>RayB
>http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
>
_________________________________________________________________
Add photos to your e-mail with MSN 8. Get 2 months FREE*.
http://join.msn.com/?page=features/featuredemail
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:10 EST