MAF change because of code 36
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
Borrowed from Midnight85 from an older post:
I hope this thread will help anyone with the code 36 problem. I have read on this forum that there are two separate relays for the burnoff function. Most parts stores will tell you that you can just use two of the same relay. In my case at least this is NOT true. I had found the correct GM part numbers for the two relays and I had bought them 2 weeks ago but I installed them the way I had read they were supposed to be and I still had the code 36. I will list the correct numbers at the bottom of this post. Keep in mind, one relay has a black connector housing while the other one is white. I was directed to put the white one in the power circuit and the black one in the burnoff circuit. I was at my wits end trying to find this problem, last night I was doing a search on Google when I found an article I had not seen before. It was not written by Joe Blow, it was a GM release with specific instructions on how to fix code 36. I read it all over and was getting frustrated because it was saying the same things I already knew. Then I came to the relay part numbers, they were the same GM numbers I already had BUT it said the white relay is supposed to be in the burnoff circuit NOT in the power circuit. I immediately went out to the garage last night at 11:00 to reverse the connectors. I wanted it done so I could take the car out today and see what happens. Before the cel always came on after the 3rd start with considerable driving being done between stops. Today the third start came and went with no cel. So did the 4th, 5th, 6th, 7th and 8th start ups. NO CEL!
Here is the GM part numbers and the circuits they go into,
Power relay...........10067925............(bla ck connector)
Burnoff relay.........10094701............(white connector)
At NAPA the white relay is called an a/c relay. no mention of any other use. Both of these numbers are able to be crossed over to whatever brand you are getting.
I hope this thread will help anyone with the code 36 problem. I have read on this forum that there are two separate relays for the burnoff function. Most parts stores will tell you that you can just use two of the same relay. In my case at least this is NOT true. I had found the correct GM part numbers for the two relays and I had bought them 2 weeks ago but I installed them the way I had read they were supposed to be and I still had the code 36. I will list the correct numbers at the bottom of this post. Keep in mind, one relay has a black connector housing while the other one is white. I was directed to put the white one in the power circuit and the black one in the burnoff circuit. I was at my wits end trying to find this problem, last night I was doing a search on Google when I found an article I had not seen before. It was not written by Joe Blow, it was a GM release with specific instructions on how to fix code 36. I read it all over and was getting frustrated because it was saying the same things I already knew. Then I came to the relay part numbers, they were the same GM numbers I already had BUT it said the white relay is supposed to be in the burnoff circuit NOT in the power circuit. I immediately went out to the garage last night at 11:00 to reverse the connectors. I wanted it done so I could take the car out today and see what happens. Before the cel always came on after the 3rd start with considerable driving being done between stops. Today the third start came and went with no cel. So did the 4th, 5th, 6th, 7th and 8th start ups. NO CEL!
Here is the GM part numbers and the circuits they go into,
Power relay...........10067925............(bla ck connector)
Burnoff relay.........10094701............(white connector)
At NAPA the white relay is called an a/c relay. no mention of any other use. Both of these numbers are able to be crossed over to whatever brand you are getting.
Thread Starter
Intermediate
Joined: Jun 2019
Posts: 31
Likes: 0
From: Cincinnati
Borrowed from Midnight85 from an older post:
I hope this thread will help anyone with the code 36 problem. I have read on this forum that there are two separate relays for the burnoff function. Most parts stores will tell you that you can just use two of the same relay. In my case at least this is NOT true. I had found the correct GM part numbers for the two relays and I had bought them 2 weeks ago but I installed them the way I had read they were supposed to be and I still had the code 36. I will list the correct numbers at the bottom of this post. Keep in mind, one relay has a black connector housing while the other one is white. I was directed to put the white one in the power circuit and the black one in the burnoff circuit. I was at my wits end trying to find this problem, last night I was doing a search on Google when I found an article I had not seen before. It was not written by Joe Blow, it was a GM release with specific instructions on how to fix code 36. I read it all over and was getting frustrated because it was saying the same things I already knew. Then I came to the relay part numbers, they were the same GM numbers I already had BUT it said the white relay is supposed to be in the burnoff circuit NOT in the power circuit. I immediately went out to the garage last night at 11:00 to reverse the connectors. I wanted it done so I could take the car out today and see what happens. Before the cel always came on after the 3rd start with considerable driving being done between stops. Today the third start came and went with no cel. So did the 4th, 5th, 6th, 7th and 8th start ups. NO CEL!
Here is the GM part numbers and the circuits they go into,
Power relay...........10067925............(bla ck connector)
Burnoff relay.........10094701............(white connector)
At NAPA the white relay is called an a/c relay. no mention of any other use. Both of these numbers are able to be crossed over to whatever brand you are getting.
I hope this thread will help anyone with the code 36 problem. I have read on this forum that there are two separate relays for the burnoff function. Most parts stores will tell you that you can just use two of the same relay. In my case at least this is NOT true. I had found the correct GM part numbers for the two relays and I had bought them 2 weeks ago but I installed them the way I had read they were supposed to be and I still had the code 36. I will list the correct numbers at the bottom of this post. Keep in mind, one relay has a black connector housing while the other one is white. I was directed to put the white one in the power circuit and the black one in the burnoff circuit. I was at my wits end trying to find this problem, last night I was doing a search on Google when I found an article I had not seen before. It was not written by Joe Blow, it was a GM release with specific instructions on how to fix code 36. I read it all over and was getting frustrated because it was saying the same things I already knew. Then I came to the relay part numbers, they were the same GM numbers I already had BUT it said the white relay is supposed to be in the burnoff circuit NOT in the power circuit. I immediately went out to the garage last night at 11:00 to reverse the connectors. I wanted it done so I could take the car out today and see what happens. Before the cel always came on after the 3rd start with considerable driving being done between stops. Today the third start came and went with no cel. So did the 4th, 5th, 6th, 7th and 8th start ups. NO CEL!
Here is the GM part numbers and the circuits they go into,
Power relay...........10067925............(bla ck connector)
Burnoff relay.........10094701............(white connector)
At NAPA the white relay is called an a/c relay. no mention of any other use. Both of these numbers are able to be crossed over to whatever brand you are getting.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
The FSM for my '89 says both MAF relays are on the firewall behind the battery.
The relay on the left is the Burn Off, the one on the right the Power. Shown on pp 201-6 in your FSM
The relay to the right of the booster is the FP relay.
The relay on the left is the Burn Off, the one on the right the Power. Shown on pp 201-6 in your FSM
The relay to the right of the booster is the FP relay.
Melting Slicks
Joined: Jun 2011
Posts: 2,384
Likes: 385
From: Leland , North Carolina
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
I have lived this code 36. I have bad news for you... you will always have it coming back and it is irrelevant.
Can you post a pic of the inside of your MAF? Is it the hot wire or thin film?
Good news, there are options. Custom tune to turn it off, convert to EBL, Blower works makes a much better MAF set up but will still need a tune, switch to an entirely different ECM...
Code 36 tends to go away and come back.... If you have a film style MAF, it may not even be returning the correct signal.
My suggestion, you can follow all the FSM and members suggestion on how to solve a non-needed function or put your time and money into deleting it.
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
Code 36 has nothing to do with driveability. Causes no changes to the operation of the car and is not influenced by any other circuit... unless 33/34 is also pointing to the plug having issues... the burn off is even on a separate relay from normal operation.
Thread Starter
Intermediate
Joined: Jun 2019
Posts: 31
Likes: 0
From: Cincinnati
I have lived this code 36. I have bad news for you... you will always have it coming back and it is irrelevant.
Can you post a pic of the inside of your MAF? Is it the hot wire or thin film?
Good news, there are options. Custom tune to turn it off, convert to EBL, Blower works makes a much better MAF set up but will still need a tune, switch to an entirely different ECM...
Code 36 tends to go away and come back.... If you have a film style MAF, it may not even be returning the correct signal.
My suggestion, you can follow all the FSM and members suggestion on how to solve a non-needed function or put your time and money into deleting it.
Can you post a pic of the inside of your MAF? Is it the hot wire or thin film?
Good news, there are options. Custom tune to turn it off, convert to EBL, Blower works makes a much better MAF set up but will still need a tune, switch to an entirely different ECM...
Code 36 tends to go away and come back.... If you have a film style MAF, it may not even be returning the correct signal.
My suggestion, you can follow all the FSM and members suggestion on how to solve a non-needed function or put your time and money into deleting it.
I searched for and found the part numbers from the first response in this thread and that type of relay does not work. I replaced the relays with the same part number as I thought you were suppose to do for a 1989. After I replaced the MAF the code went away and I drove it a little then it came back on. I think the previous owner did the same thing to fix it.
Maf relay
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Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
The MAF is new. It is the hot wire.
I searched for and found the part numbers from the first response in this thread and that type of relay does not work. I replaced the relays with the same part number as I thought you were suppose to do for a 1989. After I replaced the MAF the code went away and I drove it a little then it came back on. I think the previous owner did the same thing to fix it.
I searched for and found the part numbers from the first response in this thread and that type of relay does not work. I replaced the relays with the same part number as I thought you were suppose to do for a 1989. After I replaced the MAF the code went away and I drove it a little then it came back on. I think the previous owner did the same thing to fix it.
Sure, MAF has it's benefits and if you look at newer cars they are employing both a MAF and MAP to use either or where it is most beneficial. The most direct route is to have it programmed out. I think if you contacted certain people... you can PM me for a reference since they are not sponsors, get a scan of your car and have them do a custom tune with the Code 36 turned off, you will be very happy and get a bit more performance to boot.
Yes, you can trace wires and troubleshoot the Code 36... I imagine the time saved with a tune will be worth avoiding the headache.
Last edited by KyleF; Jul 5, 2020 at 02:10 PM.
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
Intermediate
Joined: Jun 2020
Posts: 42
Likes: 0
From: Russellville, Ar.
Not familiar with "EBL" or "speed density" ? KyleF you can pm me. ty
Sorry C4firstvette I don't mean to take away from your question.
Sorry C4firstvette I don't mean to take away from your question.
Last edited by Stan's V; Jul 5, 2020 at 05:53 PM. Reason: format
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
Not familiar with "EBL" or "speed density" ? KyleF you can pm me. ty
Sorry C4firstvette I don't mean to take away from your question.
Sorry C4firstvette I don't mean to take away from your question.
Speed Density uses a MAP sensor (Manifold Absolute Pressure) Late TPI
EBL is an ECM made by Dynamic EFI
Drifting
Joined: Apr 2020
Posts: 1,925
Likes: 610
From: Orange, CA
If your car is otherwise operating correctly and you just want to get rid of this code (as it is likely irrelevant), and you don't mind buying a MEMCAL adapter from Moates, I can burn a chip for you that will get rid of the code. Be more than happy to, already doing it for another member here.
I guarantee it'll be a lot cheaper than switching to an aftermarket ECM, but if you have other running issues than just this code, please do investigate them first. My chip would only disable the error codes, offer different fan temp speeds, and set a rev limiter if not already set. It won't fix any mechanical issues, electrical issues, or tune issues.
I guarantee it'll be a lot cheaper than switching to an aftermarket ECM, but if you have other running issues than just this code, please do investigate them first. My chip would only disable the error codes, offer different fan temp speeds, and set a rev limiter if not already set. It won't fix any mechanical issues, electrical issues, or tune issues.
Melting Slicks
Joined: May 2004
Posts: 2,856
Likes: 187
From: Earth
Dealing with the same issue in my 89 for the last 2 years. Years back replaced the relays with a new $300 "remanufactured" MAF I think from Ecklers. Got rid of it back now it's back again. I have cleaned the MAF with cleaner and let it dry and after about 30-50 miles it comes back on. It is pretty solid and doesn't come and go anymore. Car runs strong. Just hate seeing that light on. I saw a cheap MAF on ebay for $70.xx and was thinking of trying it since it was cheap. Such a PITA!!!
Melting Slicks
Joined: Jun 2011
Posts: 2,384
Likes: 385
From: Leland , North Carolina
Last edited by TommyFox; Jul 10, 2020 at 07:20 AM.