1987 /Code 36,33.
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From: Spotsylvania Va.
1987 /Code 36,33.
again. Does this model require the burn off wire? I had ordered a maf sensor, when I got it, there wasn't a wire in it. Installed anyway still got 33, and 36. Any advice would be appreciated. Any documents to trouble shoot would be great. Thanks in advance. I do not like the fact that I don't know how .
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From: Spotsylvania Va.
Mass air
Seems China Makes it. Part # REPC316708. Ordered from carparts.com. I called them and found out that none they sell has the burn off wire. I'm returning it. It was not expensive. So I figured I would try it to see if it would clear the code . Car still runs ok. Dang service light drives me nuts. 33 code just started. I'm thinking that the MAF sensor has something to do with that to. I have a Haynes book , but that doesn't help much.
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Haynes is not that useful, nor is Chiltons. Maybe some pictures or one or two things.
You need the Helm Factory manual. Best money you can spend.
It has the full procedure to troubleshoot the MAF codes.
You need the Helm Factory manual. Best money you can spend.
It has the full procedure to troubleshoot the MAF codes.
Drifting
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Search around here, plenty of threads regarding the dreaded code 36, burn off circuit failure.
My solution (eventually) was to purchase a replacement MAF without a burn off circuit, for a reasonable price I might add. Then had the MEMCAL changed by a tuner to disable the code 36 check. Upgraded the old EEPROM to flash at the same time.
She runs great this way.
Tidbit: If code 36 is cleared by disconnecting battery, it will NOT trigger until engine has been run to normal operating temperature, turned off for five minutes and engine restarted. Clearing the code and not seeing on first ignition on does NOT mean it's fixed.
My solution (eventually) was to purchase a replacement MAF without a burn off circuit, for a reasonable price I might add. Then had the MEMCAL changed by a tuner to disable the code 36 check. Upgraded the old EEPROM to flash at the same time.
She runs great this way.
Tidbit: If code 36 is cleared by disconnecting battery, it will NOT trigger until engine has been run to normal operating temperature, turned off for five minutes and engine restarted. Clearing the code and not seeing on first ignition on does NOT mean it's fixed.
Last edited by kael; Oct 7, 2020 at 08:07 AM.
Drifting
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From: Michigan
Search around here, plenty of threads regarding the dreaded code 36, burn off circuit failure.
My solution (eventually) was to purchase a replacement MAF without a burn off circuit, for a reasonable price I might add. Then had the MEMCAL changed by a tuner to disable the code 36 check. Upgraded the old EEPROM to flash at the same time.
She runs great this way.
Tidbit: If code 36 is cleared by disconnecting battery, it will NOT trigger until engine has been run to normal operating temperature, turned off for five minutes and engine restarted. Clearing the code and not seeing on first ignition on does NOT mean it's fixed.
My solution (eventually) was to purchase a replacement MAF without a burn off circuit, for a reasonable price I might add. Then had the MEMCAL changed by a tuner to disable the code 36 check. Upgraded the old EEPROM to flash at the same time.
She runs great this way.
Tidbit: If code 36 is cleared by disconnecting battery, it will NOT trigger until engine has been run to normal operating temperature, turned off for five minutes and engine restarted. Clearing the code and not seeing on first ignition on does NOT mean it's fixed.
However, both happening together would lead me to inspect the wiring between the ECM and MAF very closely. If you have an FSM, you could see the wire colors and pin# to be able to check for continuity between the ECM plugs and the plug for the MAF.
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From: Spotsylvania Va.
the
Going to get one from O'Reilly I guess tomorrow. The one in the car i know is broke. Seem that the tab? Inside broke off . It fell out in my hand I don't know how delicate the interior stuff is. Anyway, we shall see. Thanks for the book. Going to do some reading this evening.
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From: Spotsylvania Va.
The wire did glow.....before. Just for grins , I'm going to recheck it again today. Still need to replace it. From what I'm reading, the outboard relay on the firewall is the one that feeds it. I will be letting you know . It seems that a good troubleshooting description here would help folks with limited access to books. I checked YouTube and could find nothing on a step by step procedure. Seems to it would be good idea for these pesky ones
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From: Spotsylvania Va.
Follow Up. Don"t buy a duralast DL-6014. One store had it that would fit in the area. When I peeked inside of it , There looked like a wire in it. Nope. Was not. Taking it back tomorrow. Also shipping back the one from carparts to. I put the old old back on . Bosch Brand. wire on it still glows. so i dunno . may i should be working code 33 first. Back to reading.
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Another update . I just replaced both relays on the firewall. Started the car, 4 seconds later, service light back on. Went for a ride about forty minutes before shutting if off . I had to do some stop and go shopping with turning the engine off and restarting. Got home and then checked for codes. I got 33 code again but no 36 this time . seems 36 code was a bad relay. One down, 1 to go! I'm still looking for ideas ? The Bosch MAF sensor had a part that looks like a tail Rudder? on a plane. It had fell of when I touched it , just a tiny bit sticking up now. would that give a code on startup? Car still runs really well tho. ..I'm always looking for that magic answer. I would like to be sure before buying 1.
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From: Spotsylvania Va.
Question I forgot to ask . On Rock Auto, The Walker Mass Air flow sensor states that it does not have the burn off circuit. Does that mean that the rest do? Would any work for me?
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From: Spotsylvania Va.
Last update on this from me. No Codes. Went to Zip Corvette (close to me, 50 miles) And picked up their instock Maf Sensor. Installed it .. fired it up, waited 4 seconds,ten seconds. engine smoothed out and no codes. I also bought a headlight switch **** . Wrong one. That was a really good excuse to take it back ..had to check for the 36 code. down and back.. no codes.. still need the headlight switch ****. Thanks for all the input and suggestions.