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Posted on Apr 18, 2011
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MY VAN IS OVERHEATING WHAT ARE THE STEPS FOR TROUBLESHOOTING

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Doug Keller

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  • Posted on Apr 18, 2011
Doug Keller
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When does it overheat? At idle, or at highway speed? Is the coolant level where it should be? Overheating at idle or highway speed may be a faulty thermostat. If it overheats only at idle then it is likely a cooling fan fault. To determine if the fan is working start the engine and switch the A/C on, the fan should come on, if it does not, then you need to have the computer "scanned" to see if it can detect the reason for the fan not coming on. If the fan is switching on, then you need to have the water pump checked to see if in fact it is pumping coolant (this could also be the cause of overheating at highway speed) If you are overheating only at highway speed you may want to have the enigine checked for a blown head-gasket, or faulty radiator.

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