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Relays on firewall

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Old 08-07-2005, 12:48 PM
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Car: 86 IROC
Engine: 305 TPI
Transmission: 700R4
Relays on firewall

I'm having a maf problem. Low voltage code comes up constantly. Have replaced ecm and maf (microtech, big power gain). I found one relay with a loose terminal (F) after checking entire wiring harness. It is the 3rd one from the fender What relay is this for? Two of these relays look identical, can I interchange? Will an 86vette relay work on my 86 iroc?
Old 08-07-2005, 12:51 PM
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Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
That one should be for the fuel pump relay. The other two are for the MAF power relay and the MAF burn-off relay.
Old 08-07-2005, 01:03 PM
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Car: 86 IROC
Engine: 305 TPI
Transmission: 700R4
burn off relay

Thanks Trickster. New question. Since my new maf has no wire, only a circuit board, will the burn off process damage the new maf?
Old 08-07-2005, 01:26 PM
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Car: 1989 Iroc-Z
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No it won't, I also have one of the Microtech MAF sensors in my 89 Iroc and have had no problems with it.
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