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Topic: 1989 relay location

in Forum: C4 Electrical


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1989 relay location (1/5)
 1/11/23 2:57pm
themailman
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Pickens, SC - USA

Vette(s):
1989 Red,convertible,sold an 78 Black coupeSilver Anniversary after 3 years.

Joined: 7/21/2009
Posts: 25

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 (2/5)
 1/25/23 8:59am
lkedmiston
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Williamsburg, PA - USA

Vette(s):
1989 coupe

Joined: 6/8/2019
Posts: 14

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.

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Re: 1989 relay location (3/5)
 1/25/23 9:02am
don953
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Port Richey, FL - USA

Vette(s):
1987 Convertible. Bright Red/Red Interior. Stock/Original.

Joined: 3/21/2015
Posts: 3

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 (4/5)
 1/28/23 7:35am
TLAVAC
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beaufort, SC - USA

Vette(s):
1990 Turquoise Corvette (his) & 1990 Turquoise Corvette (hers)indy festiville car for sale

Joined: 9/1/2009
Posts: 39

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!!

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Re: 1989 relay location (5/5)
 2/8/23 7:43am
themailman
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Pickens, SC - USA

Vette(s):
1989 Red,convertible,sold an 78 Black coupeSilver Anniversary after 3 years.

Joined: 7/21/2009
Posts: 25

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

 

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