Question about 1992 Plymouth Grand Voyager

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My Voyager is overheating, Ive flushed the radiator,changed the thermostat,radiator cap & temp.sending unit. The fan works properly but Ive replaced the relay that runs the fan,A/C,& temp. sending unit twice already. So as of right now I have the cooling fan bypassed to where its always on when I'm driving. But where im stuck is when it starts getting hot It will start to cool down when I drive very fast between stoplights,or when I turn on the heater.What else could be causing it to over heat?

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  • sam_mecham May 09, 2010

    That makes some sense ,but why do you think my fan/A/C relay keeps blowing?

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It's the radiator cap """" just take the cap off and change evreything underneath it LOL

Posted on May 09, 2010

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Will it sounds like u tryed everything except what could be cousing the problem it is probley the heater core is pluged with hard water or calcium build up or is just pluged and a rad flush wont flush the heater core unless you start the vechial and flushing the rad to do the heaterd core to turn on the heat to high and the fasters fan speed and make shore the van is running.

Posted on May 09, 2010

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