Truck Will NOT get warm!!

Brink · 2006-12-11T18:46:05+00:00

It's a 98 F-150, 4.2L motor. I have owned my own shop for over 20 yearsand this one has me stumpped! Customer replaced the thermostat because engine temp. read cool and noheat from the heater. When he came to me, I recommended he replace thethermostat again. He did, but problem still exists. I can not get theengine temperature to rise above 153 degrees. And that is after I coveredthe radiator with paper to restrict the air flow. I went as far aspinching off the upper and lower rad. hoses. After 10+ minutes andholding the rpm at 2000, the engine temp. came up to 180. As soon as Iremoved the restriction from the hoses, cooled immeadiatly back to 150. Ihave ensured the system is full. I as using a infa-red temp sensor, thetemp. guage on the dash and a scanner to check engine temperature readingof the computer, as well as checking temperatures with my hands. I cannot get this truck to heat up!! Any ideas??

Dec 11, 2006 22 Replies

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Michael Pardee 19 years ago

And aftermarket thermostats don't have the best reputation anyway. I gave up on them ages ago.

Mike

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aarcuda69062 19 years ago

The truck doesn't get warm. Why are so many people looking at the radiator to begin with?

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Ollie 19 years ago

That sounds a great plan, can I do it for free .......PLEASE ????????

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