Code 36 Burnoff trouble
Thread Starter
2nd Gear
Joined: Dec 2004
Posts: 2
Likes: 0
Code 36 Burnoff trouble
I have a 86 that I am getting a code 36 on. It seems to run just fine most of the time, but sometimes when it is cold it hesitates pretty bad till it warms up.
I have checked the burnoff relay and it seems fine along with the MAF sensor. Anyone have any more diagnostic procedures? I am thinking a bad ECM.
I have checked the burnoff relay and it seems fine along with the MAF sensor. Anyone have any more diagnostic procedures? I am thinking a bad ECM.
Instructor
Joined: Aug 2004
Posts: 109
Likes: 3
From: Just North of Boston Mass
Maf codes can be very frustrating. 
Ther are two relays power and burnoff I would replace them first. But:
when I had MAF problems with my 85 and it turned out to be a bad ECM so they do go bad. The only way to test it is to replace it. Short money about $100. Sometimes its best just to throw some parts at it than spend too long diaging. Would cost alot more than that to take it to the dealer.
Ther are two relays power and burnoff I would replace them first. But:
when I had MAF problems with my 85 and it turned out to be a bad ECM so they do go bad. The only way to test it is to replace it. Short money about $100. Sometimes its best just to throw some parts at it than spend too long diaging. Would cost alot more than that to take it to the dealer.
Safety Car
Joined: Jan 2001
Posts: 4,385
Likes: 689
From: Boise ID
Originally Posted by Cue
I have a 86 that I am getting a code 36 on. It seems to run just fine most of the time, but sometimes when it is cold it hesitates pretty bad till it warms up.
I have checked the burnoff relay and it seems fine along with the MAF sensor. Anyone have any more diagnostic procedures? I am thinking a bad ECM.
I have checked the burnoff relay and it seems fine along with the MAF sensor. Anyone have any more diagnostic procedures? I am thinking a bad ECM.
Burning Brakes
Joined: Nov 2002
Posts: 1,239
Likes: 1
From: Las Vegas NV
Originally Posted by Cue
I have a 86 that I am getting a code 36 on. It seems to run just fine most of the time, but sometimes when it is cold it hesitates pretty bad till it warms up.
I have checked the burnoff relay and it seems fine along with the MAF sensor. Anyone have any more diagnostic procedures? I am thinking a bad ECM.
I have checked the burnoff relay and it seems fine along with the MAF sensor. Anyone have any more diagnostic procedures? I am thinking a bad ECM.
Thread Starter
2nd Gear
Joined: Dec 2004
Posts: 2
Likes: 0
My Father is a electrical engineer and tested the relays, they have the proper resistance and are working properly. I also have a Genisys scanner and can see the MAF is working properly. Im going to replace the ECM next I think.
Safety Car
Joined: Jan 2001
Posts: 4,385
Likes: 689
From: Boise ID
Originally Posted by Cue
My Father is a electrical engineer and tested the relays, they have the proper resistance and are working properly. I also have a Genisys scanner and can see the MAF is working properly. Im going to replace the ECM next I think.
If you know it's burning off everytime, it may well be the ECM.
Team Owner
Joined: Jan 2003
Posts: 20,254
Likes: 221
From: Summerland B.C. Canada
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Instructor
Joined: Aug 2004
Posts: 109
Likes: 3
From: Just North of Boston Mass
Nice diagram Agent86.
If you want to see if the MAF is burning off you can disconnect the MAF from the air cleaner and look in it while you have someone else shut off the car. After a few seconds the wire will glow red for about 1 sec. If not make sure you have 12v to relay, the ECM grounds the burnoff relay to burn off the MAF.
You can then check for power, grd, and 5v from the ECM to the MAF at the MAF, especially the grounds.
If all of this checks good what else is left?
If you want to see if the MAF is burning off you can disconnect the MAF from the air cleaner and look in it while you have someone else shut off the car. After a few seconds the wire will glow red for about 1 sec. If not make sure you have 12v to relay, the ECM grounds the burnoff relay to burn off the MAF.
You can then check for power, grd, and 5v from the ECM to the MAF at the MAF, especially the grounds.
If all of this checks good what else is left?
Drifting
Joined: Aug 2004
Posts: 1,400
Likes: 0
From: Oceansaide CA
I'm in the same boat; are these relays near the brake booster and side-by-side on the fender wall thing?
Can I ask for these by name at NAPA or something, or do I get generic relays in same spec?
Can I ask for these by name at NAPA or something, or do I get generic relays in same spec?
Team Owner
Joined: Sep 2001
Posts: 62,067
Likes: 1,722
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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I would replace the relays long before I thought about replacing the ECM.
They are too cheap to justify dumping money into the new ECM. Theyre only like $20 together.
They are too cheap to justify dumping money into the new ECM. Theyre only like $20 together.