Mechanics

GRANDMARQUIS HAS LITTLE HEAT

1986 Mercury Marquis

My Mercury Grand marquis 1986 has little heat entering the vehicle. The blower flow seems fine. I tried to temporarily clamp the Radiator inlet hose to the Engine for just about 5 minutes and it did not change the heat temperature. What would be the best first thing to check or do?

Thank you
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Mesquite5555
January 22, 2007.



First thing is the ant-freeze. Second is themostat. Third blocked heater core, go to radiator shop and get it high pressure blown out! Do you have real good a/c? Check the blend door for binding or bad servo. How is the radiator temp? Hot on top and cool on bottom is good!
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Merlin2021
Mar 5, 2007.
The AC works good. The radiator temp is actually very low. I will take these suggestions you gave into consideration and have a look tonight. Thank you.

Tiny
Mesquite5555
Mar 5, 2007.
A vote would be good! If upper radiator is cold go with thermostat first the clogged radiator!

Merlin2021
Mar 5, 2007.

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