I had the same happen to me re: check engine light after install of the
755-180 (was told this was the perfered TS for my 4.7 and/or this is what
'everyone' uses). However, took a month or longer for the CE light to
show.
How did you get the code and look up what it meant?
I stopped by my dealer and they scanned the code, didn't give me the
number, but read off from his scanner: 'Engine too cold for too long' and
reset the code.
They want me to come back and check my TS but I don't think so.
Truck performs just the same, my gauge always reads the same (as yours,
just a tick above the first line) and the truck warms up like it always
has....the check engine light hasn't been back, yet I suspect I'll be
seeing it soon.
On Wed, 15 Aug 2001, Michael Carr wrote:
> Last week I installed a Robert Shaw 330-180 thermostat and today (after
> driving about 100 miles) the check engine light came on (P1281/coolant
> too cool for too long.) The weather has been the same (mid-70s at night
> and upper-90s during the day.) A/C is always on. The temp gauge
> hovers at or just above the first line on the gauge (there are no
> numbers.)
>
> Is anyone else using a 330-180? Have you had any trouble?
>
> Could something besides the thermostat be causing this?
>
> A few months back, a DMLer mentioned that the 330-180 would be better
> than the 755-180 on the 4.7L because the spring on the 755-180 may not
> be able to withstand the pressure of the 4.7L's water pump (all of this
> was based on a recommendation from a CooperStandard engineer.) After
> removing the OEM thermostat, I could see why - that spring is huge!
>
>
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