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Topic: 1989 relay location

in Forum: C4 Electrical

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1989 relay location

Posted: 1/11/23 3:57pm Message 1 of 5
themailman
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Pickens, SC - USA
Joined: 7/21/2009
Posts: 25
Vette(s): 1989 Red,convertible,sold an 78 Black coupeSilver Anniversary after 3 years.

Need to find the relay fo:r 1) the electric fan.it runs continually w/ign  ON

2) Mass Air Flow sensor  BURN OFF relay

I can see 3 under the  master cyl. on tthe firewall..IF it's them which ones are which???

Thx!

 

getting a 3-6  on a code reader.

 



|UPDATED|1/11/2023 3:57:27 PM (AZT)|/UPDATED|



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Re: 1989 relay location

Posted: 1/25/23 9:59am Message 2 of 5
lkedmiston
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Williamsburg, PA - USA
Joined: 6/8/2019
Posts: 14
Vette(s): 1989 coupe

Corvette Central has a bunch of Youtube videos of a stripped out C4 where they point out lots of hidden relays and other parts.  I would start there.




Re: 1989 relay location

Posted: 1/25/23 10:02am Message 3 of 5
don953
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Port Richey, FL - USA
Joined: 3/21/2015
Posts: 3
Vette(s): 1987 Convertible. Bright Red/Red Interior. Stock/Original.

On my 87, the Mass Airflow Relay is right behind the battery. I was getting the same code, and replacing the relay fixed it. Think it's the same on an 89.




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Re: 1989 relay location

Posted: 1/28/23 8:35am Message 4 of 5
TLAVAC
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beaufort, SC - USA
Joined: 9/1/2009
Posts: 39
Vette(s): 1990 Turquoise Corvette (his) & 1990 Turquoise Corvette (hers)indy festiville car for sale

The fan is running because the resistor on top of ac box is shorted.Unplug it and the fan will stop running .They sell them for replacement!!




Re: 1989 relay location

Posted: 2/8/23 8:43am Message 5 of 5
themailman
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Pickens, SC - USA
Joined: 7/21/2009
Posts: 25
Vette(s): 1989 Red,convertible,sold an 78 Black coupeSilver Anniversary after 3 years.

my 89  doesn't have  one on the heater box,can you post a pic of yours?  Thx

 




in Forum: C4 Electrical


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