Very fustrated, pls help! MAF
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Car: 1987 Iroc convertible
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Very fustrated, pls help! MAF
Code 33!! I have replaced the MAFs and the relays that go with it, still getting code. I have no idea what to do now. Can someone pls help? I am not good with this stuff and its so fustrating!! Car ran great and bam, code 33. When it throws the code the car does not like to idle and runs rough. Its a 87 Iroc and I am lost..Any ideas where to look next? When u turn the key off and restart it it runs fine and the check engine light goes out, drive it a mile and easy into the throttle and the light comes on, sometimes it would take miles and miles to throw the code now its doing it within a mile or so..
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
I replaced the pigtail when I installed the new MAF sensor..still does it.
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
The car does have a cam in it, I got the car 3 yrs ago and I drove for one summer with no issues, now its throwing code 33 everytime I try to drive it. I took it for a ride this am and went about 2 miles and the light came on and and ran rough, shut the car off for 2 mins and it starts back up just fine. I than drove it at 65mph for 30 mins and ran perfect, let off throttle to exit road and easy back into it and it throws the code..Could the TPS have anything to do with it? I have no clue how to do any sort of eprom reprogramming, I am 42 yes old and this my first injected car that I have messed with, I need help..LOL
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
I have not done that yet but it says to start engine for a min till the light comes on, problem is when I start the engine the light is not on untill I drive it so can I still do that test even tho the computer seems to reset itself when I shut the car off? If I go out there right now and start the car it will run fine and have no light on, the car will idle all day and run fine. Its only when I drive the car is when this happens..very fustrating.
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
ok, I will, I took the computer out to just check the connections and it has a hypertech chip? prom? in it. They any good or what?
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
This is what I found when I looked up the part number...Part #127062, Thermo Master For 1987 Camaro/Firebird 350 TPI Automatic Transmission
- Premium Octane
- Cooling Fans 160 degrees (if equipped with electirc cooling fans)
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
I don't even know what u mean by piggyback lol. I took the computer out of the car and took the 2 small screws out and took the panel off and looked in and theres a "chip" in there that says hypertech, I will put it back and and try to run the test u gave me.. Would a TPS have anything to do with this whole thing?
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Car: 1988 camaro z28,1997 camaro lt1
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Re: Very fustrated, pls help! MAF
Try this adjust Tps to .64 and see if that helps
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
I put TPS to .64 and took it for a ride and it was great for a hr untill I slowed down going a set of railroad tracks and got back into the throttle and thew the code..dam it!!
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
Ok so I ran this test and got down to where is says prob terminal C to chassie ground and I got 5 volts so than it says MAF is faulty..Its brand new so now I am really stumped!!
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
what do I need to do? Also I noticed theres a code 12 also if that has anything to do with it. Can u program something and send it to me? I would def pay, what do u need to know? Like I said I am all new to this, been a carb guy for yrs and yrs..thanks again
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Re: Very fustrated, pls help! MAF
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
Hopefully driving it today, if not def tomorrow. Feels like I live in Seattle here, rained all week!
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Re: Very fustrated, pls help! MAF
I was going to say it still sounds like a bad MAF to me. I had a similar problem, it would throw both 33 & 34 and would die while driving when the SES light came on if you let off the gas (wouldn't idle). I also changed both the relays and cleaned it with MAF cleaner and the 34 came back after a while. Changed the MAF and all has been good. Unfortunately as you must know it's a $300 part. Think I got a reman for like $260, but if yours was brand new can you take it back and exchange it?
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Re: Very fustrated, pls help! MAF
Also..."33. High voltage (low vacuum) at mass air flow sensor (or MAP sensor)"...have you looked for any vacuum leaks between the MAF and the throttle body? There is a small elbow under the throttle body that can become very brittle too. See my post here for a pic: https://www.thirdgen.org/forums/tpi/...at-1988-a.html
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
Also..."33. High voltage (low vacuum) at mass air flow sensor (or MAP sensor)"...have you looked for any vacuum leaks between the MAF and the throttle body? There is a small elbow under the throttle body that can become very brittle too. See my post here for a pic: https://www.thirdgen.org/forums/tpi/...at-1988-a.html
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Car: 1987 Iroc convertible
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Re: Very fustrated, pls help! MAF
Well thanks to the advice and alot of help from Tuned Performance I believe the code 33 is no more of a issue!
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Re: Very fustrated, pls help! MAF
So how did you resolve the problem with the code 33? I am having this problem as well and have a Hypetech too. I also have code 41 along with code 33. Thankls for any help you can provide.
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Re: Very fustrated, pls help! MAF
tunedperformanc,
Thanks for the reply back. I am going to change out the MAF and the ECM and see what happens. I will keep the board inform of my progress.
Thanks for the reply back. I am going to change out the MAF and the ECM and see what happens. I will keep the board inform of my progress.
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Car: 1987 Trans Am,1989 GTA
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Re: Very fustrated, pls help! MAF
Go over all the wiring for the Maf look closley had a similer problem and over looked the wiring. kept replacing maf after maf and trying the toubleshoot chart when the problem was right in front of me and it also did cause the intermiten issue of the ses light
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Re: Very fustrated, pls help! MAF
tunedperformanc,
Thanks I will give that a try tomorrow. Will update you with my findings.
Thanks I will give that a try tomorrow. Will update you with my findings.
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