Is there a default degree for coolant temp

[zilla68]

I noticed my truck is showing at cold start 200 degree's after it has set for many days.

Is there a default temp when the sensor goes out, and if so is that it?

Just wanted to get some insight before I order a new one.

It seems to work, because after a while you can tell the t stat opens and it drops, but I never noticed it before that high when just starting my truck, but I never really paid attention either.

thanks in advance.

 

[Tom S]

I am guessing you are looking with AE. That is a bogus parameter except possible on trucks with a manual trans. If you look at the wiring diagram there is not water temp input to the PCM.

 

[backwoodsboy]

What Tom said. IIRC the coolant temperature value is inferred from engine oil temp.

 

[zilla68]

no I'm getting it from my scanguage in my 4 guage pod

 

[rusty1161]

The Scangauge gets it's info from the PCM, too.

Rusty

 

[Rideracelivemx7]

that's what my scan gauge reads as well. actually around 215 to start and will read once it hits 245 then reads true value for some reason. my truck was originally a manual but I've swapped over to a full 96 wiring harness.

 

[d7es3l]

Just read the oil temp & know that coolant temp is close to your oil temp!

 

[greenwhite1]

I want to understand this better and have been searching this subject lately. The ECT coolant sensor is located on the water pump and supplies a signal to the gauge on the dash only. There is also a sensor going into the block just above the pump on the left when looking at the front of the engine. I think it is called (block coolant temp switch) and I think it sends a signal to the computer that turns the light on the dash on if it over heats, from what I've read. Is that correct?

I have been monitoring water temp with the torque app on my 97 truck and my 95 work van. My truck says -40 or 214 but the van actually has a good reading very close to the oil temp. I checked my truck with AE and the reading was different than torque but still didn't match my oil temp. I'm trying to figure if I have a bad sensor and the ford dealer said the sensor in the block next to the water pump sends a signal to the computer.

My truck gets such bad fuel milage in the winter and I was trying to figure out why and thought I might be in warmup mode or something.

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