Half point: WAS Re: temp warning question

[SuffolkD at aol.com]

MFTS
Low Coolant
and/or a flaky dash autocheck circuit.
1/3 point Brett?
-Scott by BOSTON...........I'll check my A/C. I didn't know I'd loose that 
due to a MFTS.  Cheaper than a recharge!

At 5:00 PM -0500 2/28/04, Phil Rose wrote:

> >At 11:54 AM -0500 2/28/04, feelstranger wrote:
> >>
> >>Can the MFTS signal an overheat danger signal even if the temp 
> >>gauge shows low temp and the actual temp is likely low?
> >
> >That's a common failure mode for the MFTS. If it happens, it means 
> >you also have lost much turbo boost as well as  your A/C. Check the 
> >maximum boost and you'll probably see no more than about 1.4 bar. 
> >Also no A/C operation.
> 
> Half credit Phil :-)
> 
> The autocheck and ECU/CC head signals are separate.   The autocheck 
> signal is at a higher temperature, at least on the mechanical version 
> of the sensor(wax piston actuator, thermocouple disk).
> 
> Also, nobody has mentioned that low coolant will cause the same 
> warning; they're on the exact same circuit.
> 
>