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Q: What causes high idle and then rough high idle when heater is turned on?
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Why does Heater fan not work on high speed?

2004 Chevy express van, heater has no high speed, at one time the blower stayed on even when the ignoton was turned off therefor draining the battery,


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Why does the heater behind the dashboard make a clicking noise when the heater is turned on?

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What causes your 1991 Plymouth Acclaim to idle rough and lose power?

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