I don't know about that. If it's like all the other cars/trucks that I own,
you can destroy your cats by running with an open T-Stat. The cats run
really, really hot from the extra gas dumped in by the PCM and they will
burn out.
----- Original Message -----
From: <SEMIHEMI01@aol.com>
To: <AOL@dakota-truck.net>
Sent: Friday, November 01, 2002 3:45 PM
Subject: Re: DML: running cold!
>
> Punch,
> If it runs too cold, It can fool the PCM into thinking it has never
> warmed up and run rich and shoot your gas mileage to hell. Other than
maybe
> fouling plugs and playing hell with the O2 sensors nothing else.
> I suspect you're right about the Thermostat being stuck open. Have
you
> tried the heater to see how hot the air is? Could accidentally have a bad
> temp. sending unit but I doubt it. Keep it simple and replace the
thermostat
> first. "Sir Bill"
>
> SEMIHEMI01@AOL.COM> KB SuperCharged, 4.7L, 2001, QC,
> http://hometown.aol.com/semihemi01/index.html <or>
http://southernmopar.org/
>
>
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