88IROCTPI

I have been searching for this mystery code 36 that my 88 IROC keeps throwing up its not in any manual, although I may have not given it enough time in the books. i have read some forums online and dont understand what will fix the problem. I keep reading about a "MAF Burnout relay failure." but this is only talked about with VIN code (S) cars which i believe is a V-6 car. Is this an internal relay within the MAF sensor or is it external. I am not spending 170.00 bucks on a MAF sensor just to find out there is a $10.00 relay somewhere causing this problem.

Some more history on the car. Bought the car for $390.00 (99.5% rust free) after hearing it run but the car would fall on it face after 2500+ and some times wouldnt even run at all as if it was starving for fuel, but just cycle the key and i could get a few more miles out of it. When i got the car home I hooked up a snap on scanner and it read codes 22 and 36, 22 being a Throttle Position Sensor. TPS was reading 0.00 ohms and the most i could adjust it was .22 ohms, after a brief search i noticed that the plug for the idle screw had been knocked out, so decided to give it a couple a turns getting the TPS to read .54 ohms. now the car runs better and will drive down the road but still falls flat on its face, but not untill around 3/4+ throttle no matter what the rpm. is this the MAF sensor causing this or no.

thanx chad.

CamaroJosh

I was having a similar problem with my 88 when i first bought it. It would die at 3/4- full throttle. After going through so many things and still having the problem i checked the maf and it was unplugged.. So yea the maf may be causing that problem

But on a side note thats a great buy lol and GL with the car

89Vert

code 36 is MAF burn off relay

why are you checking TPS resistance?

check TPS voltage output, at idle it should be at about .54 volts give or take a few, almost 5 volt or reference voltage at WOT and should gradually increase/decrease as you depress/release the throttle

when checking codes always clear codes and run car again make sure you aren't looking at old codes


right click "save as"

http://www.moates.net/files/6)%20Mis...s/TPIcodes.pdf

IROC-T

The MAF relay is on the firewall next to the master cylinder. You will see two(one higher and one lower), I belive it is the the top one for the burn off the other is for MAF power. I chased this problem for years, would change the relay and it would stay clean for awhile then go bad again. Found out that it was corrosion on the terminals in the junction box were the harness plugs in the firewall. I first found this out by wigglling the harness and it would stop throwing the code for awhile. I pulled the plug cleaned the terminals and used a anti corrosive paste and it's been a good girl ever since.

88IROCTPI

WOW THAT WAS FAST!!! I was checking the TPS because the guy i bought it from said that he had replaced it and i was sure he didnt set it, knowing it wasnt going to be the only problem i knew it was a start. turned out i was right when the scanner said TPS was at 0.00 and it was a big improvement when i set it.

Now that i know where this relay is I am goin to start with that first thing in the morning, but what the heck is a MAF burn off relays function, where does it recieve a signial from and where does it send a signial to. I cant locate it in any wiring diagram.
thanx chad

1987IROC350

http://www.tradervar.com/GM_Codes.htm This is a list of codes. It's not the best list I've seen. For some reason I could not find the 3rd gen specific list. But this ones o.k.

89Vert

right click "save as"

http://www.moates.net/files/6)%20Mis...s/TPIcodes.pdf

IROC-T

The function is to burn off anything that may be stuck on,or to the wire in the MAF(ie. oil,bugs,dust, etc.). It only comes on for a couple of seconds after you ture off the ignition. Some times when the car has been running for awhile and you shut it down you can hear it click a couple of seconds later.

88IROCTPI

TO ALL Thank you for the very helpful info the car is running alot better with the exception that it is starving for fuel. I guess when the fuel filter was replaced the jam nut did not break free from the line and the line is now twisted. I am in the process of running all new fuel and brake lines through the entire car and I am thinking of relocating the fuel filter to mounted on the driver side shock tower for two reasons. one, fuel lines will be less likely to rust within the engine bay, two, why have any lines under the car to mess with, a fuel filter will be easy to change if mounted to the shock tower. If anybody has done or heard of doin this let me know if there was any long or short term problems with this.

thanx chad

Black305RS

just make sure you dont put the filter on the return line. also while your at it get the quick connect conversion asuming they make one. on and about the brake lines the rear brake hose that feed the rear brakes needs a special flare not double flare(at least this was the case on my 91 firebird)also with regard to that the thread into that hose is metric not standard(also the case on my firebird im asuming this is true for all f-bodies) also while replacing brake lines on my firebird i noticed that the line was 5/16'' in the front 1/4 in the middle and 1/4 at the end has anyone else done this that can confirm is this is the case for all f-bodies?