I have a problem. Where do I look to find my mass air flow sensor relays on my 1985 Iroc engine code F (305 TPI). What I see in my car on the firewall is different from what I have seen on 86-89 models.

Any help would be greatly appreciated..



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=Scott=
85 Iroc
96 Impala SS

 

There arent any, yours has a MAF module, and its super expensive if you need one. Its located under the dash piggy backed to the ECM mount.

 

Scott, do you think there's a problem with it? If you want some help, I'll bring my Helm's manual to work tomorrow. Re-post here and I'll try to answer specific questions. If you know how to handle a multi-meter, the manual's got some detailed troubleshooting instructions. I'm itching to fix one of these things. My guess is that if they fail, it's the relay inside. Problem is, if its bad, you'll want a new one ASAP. Of course, switching to the '86-'89 ECM, along with all the re-pinning, etc., will take a while, too.

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-Greg

'85 Trans Am - WS6,TPI:
Original owner, original paint/engine/interior, plus the usual bolt-ons

 

madmax i have an 86 and i have a white box piggyback on mine too. is it the same thing? i thought i had the burnoff relays on my firewall like everybody else. there are a bunch of relays there.

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86 IROC-Z
305 TPI
700R4 W/ shift kit
3.23 gears
T-Tops
maroon with gold stickers and rims/ black interior
43,000 miles
flowmaster exhaust, edelbrock headers, gutted airbox, converter, and MAF, K&N filters.

soon to come are 3.73 gears and subframe connecters.

 

I dunno, called up the chevy dealer, I can get that part for 500 bucks wholesale or 750 list. A little rich for my blood. I just figured that I could replace the maf relay's and be on my way, but I guess that is not the case.

Thanks for your help guys, I really dunno whats up with this thing... I am gonna park it and start saving towards my new drivetrain...




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=Scott=
85 Iroc
96 Impala SS

 

86's dont have the MAF module, what you are probably looking at is the VSS buffer, although mine is yellow not white.

 

my speedo is cable driven. so i must have a vss in my tranny to reference the computer for TCC lockup and Cruise operation, correct?

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86 IROC-Z
305 TPI
700R4 W/ shift kit
3.23 gears
T-Tops
maroon with gold stickers and rims/ black interior
43,000 miles
flowmaster exhaust, edelbrock headers, gutted airbox, converter, and MAF, K&N filters.

soon to come are 3.73 gears and subframe connecters.

 

Looks like the mounting points are there. Judging by the crimp connectors and the silicone on the relay, someone has worked on it before.
Is everyone sure they haven't just been relocated? Or did all '85s have the module instead of relays?

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88 IROC with cobbled together (not by me)drivetrain, 86 (?) TPI unit on an '83 305,CE subframe connectors, Edelbrock strut tower brace, polygraphite bushings all around...it handles like a dream, but man is it hard to push!!