Try another T-Stat. T-stats are netoriously faulty, even the "good"
ones. I'd rather pay $20 for a T-stat that worked out of the box 99% of
the time rather than this $5-$10 things that have a 50% sucess rate.
Other simple things. Aren't the t-stats put in backwards than normal in
the 4.7? You sure you got it the right way? Got enough coolent,
without air bubbles.
After that, mechanical fan not running right? The e-fan only turns on
when you hit over 210F (or turn on the AC).
Jay W
505/287 Dakota
John Dewees wrote:
> I have a 4.7L CC with the Automatic transmission. It is equipped with the
> Heavy Duty Service Group.
>
> I'm running a RobertShaw 330-180 (The "High Performance" t-stat). When
> driving in 90+ degree weather, the truck doesn't seem to be able to stay
> cool. No matter what I do, short of turning the heater on high. Now, I'm not
> overheating, but it does get close to 210 and rides right about there.
>
> What should I do? Should I get a radiator flush or cooling system flush? If
> so, what kind should I get? Would the one at Jiffy Lube be ok?
>
> Thanks for all your help
>
> John
>
>
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:09 EST