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| Matatk | 1987 Corvette A/C Fan Question | ||
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Well, I was having problems with the forum and I accidentally deleted Gris' original question:
"ON A STOCK '87 SHOULD THE FAN COME ON WHEN THE AC IS TURNED ON OR SHOULD THERE BE A DELAY BEFORE THE FAN KICKS ON" Well, the correct answer (I only gave a partial answer before) is this: The fan is controlled by the ECM in two ways: 1) via the coolant temperature sensor when it reaches the programmed temperature; 2) via the fan control switch (located on the a/c lines) that signals the ECM to turn it on. Once the a/c is activated, the pressure will begin to build. Once it hits 233 psi, the switch will activate and send a signal to the ECM to turn the fan on in order to control the head pressure in the a/c system. So the basic answer to the above question is: there may be a delay in the fan turning on once a/c is turned on, based on the pressure in the system.  |
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Posted on: 2015/7/1 3:40
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| GRIS | Re: 1987 Corvette A/C Fan Question | ||
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Elite Guru
 
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THANKS! |
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Posted on: 2015/7/1 12:58
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REMEMBER THE GOOD OLD DAYS WHEN NOUNS HAD GENDER AND PEOPLE HAD SEX? ---"yellow is for folks who think a bright red Corvette is too restrained." |
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