Question about 1986 Chevrolet Corvette

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Heater Fan will not turn off on my 86 Corvette

Where is the relay switch?

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  • Anonymous Mar 30, 2014

    Heater fan continues to run with key out in 1992bcorvette



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Under the hood.

Posted on Dec 29, 2008

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Replace your high blower relay. right side under the hood.

Posted on Apr 18, 2009


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1 Answer

My heater/air conditioning fan stopped blowing. Checked fuses, they are fine. No power to fan.

cooling fan relay could be bad,check relay by making a fuse jumper wire.look at the relay control circuits on relay look for control circuits terminal number 85 and terminal 86 hook fuse jumper wire terminal 85 on relay to good ground and take terminal 86 on relay hook up a jumper wire touch battery positive terminal relay should click if not, relay bad.

Sep 08, 2012 | 1995 Buick LeSabre

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I can not get my cooling fan to start no matter how hot my 1991 corvette gets i took it to the shop and tthey ssaid they could force the fan on what's wrong?

well there can be three things wrong, If the mechanic actually umped hte fan then there can only be one of two things wrong with it. 1. the fan relay or the fan temperature switch. the relay is the easiest to test as you can just swap it out with the horn relay and try honking the horn. Horn works then its the fan temperature switch. Horn does not work it is the relay.

Good Luck


Jun 16, 2011 | Chevrolet Corvette Cars & Trucks

1 Answer

The fan will not run i have replace the temp swech and the relay and the fan and thesen unet.if i cross wire the relay it will runs all the time what can it be help

F you have battery power and ignition power at the relay, and the circuit is good from the relay to the fan. then the fan is turned on bt the high pressure A/C switch or the ECU. If the circuit (ground ) to the ECU is good you probably have a bad ECU.

Sep 14, 2010 | 1984 Chevrolet Corvette

1 Answer

My electric cooling fan on 86 vette was not coming on causing car to overheat. I lightly hit the relay against the fender well a few times and it started working. Should I replace the relay ?

Replacing the relay would be the cheapest thing to do first. Before you replace it be sure that the connection, where the relay goes, is good. You may also want to add some gel that keeps contacts clean. The gel can also be found at the local autoparts store. Good Luck.

May 28, 2010 | 1986 Chevrolet Corvette

2 Answers

I have a 1980 corvette and no power to the blower fan switch?

I had the same problem on my 80 vette several months ago. The blower relay is located on the firewall top side (engine compartment,passenger side). It is a silver rectangle about 2"x1"x1" . Pull out the wiring plug and check to make sure it hasn't melted due to a loose connection. NAPA sells a new plug that can be spliced into the wiring harness. Let me know if you have any questions.


Nov 29, 2009 | 1980 Chevrolet Corvette

1 Answer

Does an 86 corvette have a starter relay? the starter does not work all the time. i have put a new battery and made sure the starter was good.

use a 12v test light and check for voltage on small solenoid wire at the starter while turning the key to start.This will let you know which way to go .There is no relay involved that would interupt this signal to the starter from the ignition switch unless added aftermarket for an alarm system.

Jul 14, 2009 | 1986 Chevrolet Corvette

1 Answer

86 corvette fan works only on high

fan switch, you would have to replace the whole unit

Feb 24, 2009 | 1999 Oldsmobile 88

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