Question about 1999 Plymouth Grand Voyager

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Engine in van is running hot. has a new radiator and thermostat.

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  • cindy_rhs Jun 27, 2009

    water pump was replaced due to leak two months ago.could it have gone bad, how do you tell,what is air bound and how do we solve that? you can tell i am not a mechanic i am a parts replacer, thanks

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It might be the water pump, or the system is air bound

Posted on Jun 27, 2009

  • Richard Delahant Jun 27, 2009

    I didn't know the pump was replaced. To check it, have the engine running and after the thermostat has opened, pinch the top radiator hose close a little and see if you feel coolant running through it, you might have to race the engine a little bit, if you feel coolant rushing through the hose, the pump is good.

    Air bound is when air gets in the system from replacing, hoses, radiators, pumps, and causes the coolant from not circulating right.With the engine at running temp, turn the heat on full blast, if there is good hot air coming out, I wouldn't worry about air bound. The next thing to check, with the engine up to temp, check and see if the electric cooling fan or fans are coming on, if the fan isn't coming on, it isn't cooling the radiator down causing it to run hot. Then have the fan checked, might be the fan itself, a fault in the wiring, or the coolant temperature sensor. Hope this helped.

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