1994 Ford F-150 very little heat

SPIDER6

MEMBER
1994 FORD F-150
V8
2WD
AUTOMATIC
10,000 MILES

3 thermastates and still very little heat
temp gauge never gose past the (N) in normal on the gauge heater doors open and close fine ther is just enough heat to keep windows clear
but WI winters are very cold need more heat
bought truck in las vegas not as cold there but still had same heat very very little PLEASE HELP

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

Hi:
What temp t-stat are you getting?

Joe

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Friday, December 12th, 2008 AT 3:58 PM

SPIDER6

MEMBER
2 POSTS

I have a 195 degree thermastat in it
no air bubble in system. I even place some cardboard in front of rad ans still runs very cool.

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Saturday, December 13th, 2008 AT 3:09 AM

BLACKOP555

MECHANIC
10,371 POSTS

Thats quite a hot thermostat!

Feel your heater core hoses with the engine hot, are they hot? One hot and one warm? Both hot? Both cold?

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Saturday, December 13th, 2008 AT 9:32 AM

SPIDER6

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2 POSTS

Yep did that one very hot one slightly cooler

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Saturday, December 13th, 2008 AT 1:28 PM

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

Hi:
The heater vent door must not be opening far enough. It's a vent that opens and closes allowing heat to enter and it blocks the heat when it's warm. A 195 degree t-stat is the factor temp. That should be working fine for the heater and the engine. If both hoses are hot, that means coolant is passing through the heater core and it should be creating heat. The last thing is the vent door. It should be located in the HVAC ductwork nearest the heater core. I realize you mentioned the heater doors work fine, but that is my best guess based on your descriptions.

Let me know what you find.

Joe