AC realy on 1990 Firebird

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03-11-2019, 02:39 PM

cjmazza

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AC realy on 1990 Firebird

Hello, can you tell me where the AC relay is located? Is it on the Driver's or passenger's side of the firewall please?

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03-11-2019, 03:40 PM

Aviator857

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Car: 1989 Firebird

Engine: 5.7 LS1

Transmission: T56

Re: AC realy on 1990 Firebird

The compressor clutch relay? (I don't recall where it was, I changed all that)

The blower motor relay is on passenger's side, its the same relay as the fuel pump relay on the driver side.

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03-11-2019, 03:45 PM

Aviator857

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Car: 1989 Firebird

Engine: 5.7 LS1

Transmission: T56

Re: AC realy on 1990 Firebird

The AC compressor relay is Driver side firewall close to the brake booster

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03-11-2019, 07:09 PM

OrangeBird

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Car: 1989 Firebird

Re: AC realy on 1990 Firebird

Quote:

Originally Posted by cjmazza

Hello, can you tell me where the AC relay is located? Is it on the Driver's or passenger's side of the firewall please?

According to this handy wiring diagram , which is for 1990 , the year you list in your thread title , the only cars that had an A/C (compressor clutch) relay were the VIN "T" cars (3.1 L V6) .

If you are a native V6 car , it's in the bank of three relays next to the brake booster . If your a native V8 car (either 305 or 350) there is no relay controlling the A/C ...