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Yep. Had the same problem on my 86. Changed the fan,sensor and relay.If you jumper the outer terminals on the relay connection you can tell if the fan works. If it does fine but the signal to 'throw' the relay from the ecm isn't working.Check with a test light for this signal.If ok replace relay.

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โˆ™ 2005-09-17 22:33:38
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Q: Why would a 1986 Corvette over heat after changing the fan and heat switch but wont click on?
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