what temp does your truck keep steady at? mine stays right at cold or below. i have replaced the coolant temperature sensor. maybe the themostat?

 

Did you replace the ONE pin sensor or the two pin sensor?

 

the thermostat is your problem....

 

i had the same prob and i replaced the thermostat and it fixed it!

 

x2

 

thermostat stuck open

 

being a 4.0l,can almost bet its the stat

 

i have the same problem, im to lazy to go out an get a new one, and its to cold out.

sad thing is, the one i have in it now is a new stant from murrays.

 

picked one up today for $4.95. i'll be changing it out this weekend. looks like it will be a cinch.

 

I have the same problem with my '92 (2.3L). Replaced the T-stat and still won't climb into the *normal* temp range and heater blows 45 degree air (mind you it's 25F outside). Performance and Mileage really sucks because it never reaches running temp, down +20% or more.

Truck has set for about 5 yrs, and just bringing her back to the road now, drained the antifreeze, new t-stat, water pump is working, radiator appears clear.....but I'm lost, cooling systems are pretty simple, but I can't figure this problem out.

Ideas?

 

maybe the coolant temperature sensor? only thing i can think of.

 

could be a bad heater core, who knows.



just because its new doesn't mean its good, i just put a new tstat in mine and its messing up.

IMO, i would get a motorcraft tstat from ford, thats what im doing this time.

 

x2

 

i finally got a chance to change out the thermostat and my engine temp was up to normal with in five minutes. usually, i never saw it make it past the n on normal. thanks guys.

 

Forgot to post a follow up... seems the *new* t-stat was no better than the old one... replaced it with another purchased from another parts store and she's been holding normal temps without complaint.