C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

MAF Burn-Off Relay ??

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Old May 27, 2003 | 10:48 PM
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Default MAF Burn-Off Relay ??


87 vette

Where EXACTLY is the burn-off relay for the MAF? And what does it look like? (A picture says a thousand words)

I know it's somewhere near the ECM. I was hoping to remove it while I wait for the new one to arrive.
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Old May 27, 2003 | 10:54 PM
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Default Re: MAF Burn-Off Relay ?? (DESPERADO)

Rectangular, about 1 X 3, above the terminal block behind the battery. There are two, the other is the MAF Relay.
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Old May 27, 2003 | 11:11 PM
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Default Re: MAF Burn-Off Relay ?? (SunCr)

I believe that would be correct for '89 and later models, I have an 87.
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Old May 27, 2003 | 11:13 PM
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Default Re: MAF Burn-Off Relay ?? (DESPERADO)

He is correct, they are located there on my '87 also. Take off the gill panel to get to the battery and they are to the right of it (staring straight at the battery) mounted to the firewall with 2 nuts each.
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Old May 27, 2003 | 11:15 PM
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Default Re: MAF Burn-Off Relay ?? (scorp508)

My Hayes manual says it's behind ECM under the right dash. :confused:

I guess they could be wrong.
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Old May 27, 2003 | 11:22 PM
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Default Re: MAF Burn-Off Relay ?? (DESPERADO)

The only year it was under the dash was 85. :)
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Old May 28, 2003 | 01:37 AM
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Default Re: MAF Burn-Off Relay ?? (DESPERADO)

I also have an 87 and I just replaced both relays last week. They are mounted on the firewall right behind the battery on my 87. They should be in plain site when looking at the battery. :auto:
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Old May 28, 2003 | 01:44 AM
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Default Re: MAF Burn-Off Relay ?? (js0308)

and I just replaced both relays last week
so that I get the right parts from GM... are they both called MAF burn-off relays?
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Old May 28, 2003 | 02:07 AM
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Default Re: MAF Burn-Off Relay ?? (DESPERADO)

It doesn't matter, they're the same part.
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Old May 28, 2003 | 02:09 AM
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Default Re: MAF Burn-Off Relay ?? (SunCr)

great thanks for the help. Both should always be replaced before buying a new MAF -- right?
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Old May 28, 2003 | 06:56 AM
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Default Re: MAF Burn-Off Relay ?? (DESPERADO)

I would definetly try replacing the relays before buying a new MAF. I believe I paid around $16 for both relays from AutoZone, If you want GM parts I am sure you will pay more. But my ones from autozone work just fine. You might want to try pulling the relays and checking the continuity across the contacts before buying new ones. There should be a diagram on the side of the relay with the schematic and terminal #s. :seeya
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Old May 28, 2003 | 10:51 AM
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Default

Yep 87 uses the same part # for both relays. That is not the case with OTHER years, but 87 does. :)
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Old May 28, 2003 | 05:41 PM
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Default Re: (scorp508)

Well I now have the new burn-off relays installed, but still have a miserable engine. So my buddy's going to bring the MAF sensor from his 86 for me to try before buying a new (rebuilt) one.
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Old May 28, 2003 | 06:03 PM
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Default Re: (DESPERADO)

let us know who you decide to go with for the MAF. I here the wells brand from autozone is good
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Old May 28, 2003 | 06:13 PM
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Default Re: (boxerlover79)

I don't believe Autozone is in Canada.

I found GM wanted $722 CDN (522 USD), I got a buddy who works for Lordco Auto Parts in Vancouver BC. He said he can get the exact same one that GM sells for $440 CDN (318 USD) - same price as MidAmerica.

I can get a Neihoff rebuilt one for $187 CDN (135 USD) from Bumper to Bumper. It comes with a 1 year warranty. I think I'll buy this one.

I tried to find a high flow model but had no luck.
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