Question about Ford F-150

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I just replace the thermostat in my 1983 ford f150 and the coolant is topped up and my gauge says am over heating does anyone have any ideas

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  • Anonymous Apr 02, 2011

    Did it over heat before you did the thermostat ?

  • coldreader Apr 02, 2011

    yes it was so i replaced the thermostat thinking that was the probleam

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  • Ford Master
  • 4,369 Answers

You probably have air trapped in the cooling system. Lave the cap loose and warm up the engine till the thermostat opens and top hose is hot. Shut off engine and tighten cap and keep reservoir to full level. Refill as it sucks back into rad.

Posted on Apr 02, 2011

  • gerry bissi Apr 03, 2011

    If you have a reservoir, it would come off a small hose just below the rad cap. If your overflow hose goes down to the bottom or the rad, then you don't have a reservoir. In that case, you just need to keep refilling the radiator to kep it full. Still, burp the air by leaving the cap loose until the engine per rad hose is hot (meaning thermostat opened). You will lose some coolant. Tighten cap and refill after it cools down. May need to do a few times. Make sure heater is on when you do this.

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