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Old 08-07-2009, 10:08 AM   #1
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Car: 1987 IROC & 1968 Nova
Engine: 5.0 TPI & 350
Transmission: 700R4 & powerglide

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code 34

i have an 87 iroc 5.0 tpi. i was getting a code 34.. changed the maf sensor and still getting the ses light. i have unhooked the battery and still get the ses light. i am at work so i can not run codes right now, but when i did check that was the only code it was giving.. i am confused as to why the light is still on. ideas??
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Old 08-07-2009, 01:35 PM   #2
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Re: code 34

check ur MAF burn off relay near the break booster.Im having a problem with a code 33 but no one seem to reply???
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Old 08-07-2009, 01:42 PM   #3
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Location: Iroquois, ON
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Car: 87 IROC-Z
Engine: 5.7 TPI
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Re: code 34

Well you're not alone. There's a few of us in the same club.

Mine's tossing a Code 33 after a few mins of running. Changed the MAF, checked the wiring, spliced in some new pigtails, cleaned contacts etc. and still get the code. New relay's are on order.

I think most of the guys that have gone down this road will all direct you to the various threads that exist here and have you do your homework. There are no quick answers or fixes for these types of problems.

There are some diagnostic/troubleshooting diagrams available to help but you have to look for them. You'll have to be handy with reading schematics and handling a volt meter. Having good color vision helps too (I'm colorblind).

There's a few different approaches you can choose to fix these code problems. Replace everything ($$$) until the problem goes away or do the diagnostic work (skills, effort, tools) to find out exactly what the problem is and fix that or pay someone else to fix it ($$$$$$).

The choice is yours. FWIW.
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Old 08-07-2009, 04:34 PM   #4
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Re: code 34

put my old maf back on and the light went away.. i am guessing that plugging and unplugging the connector fixed the problem. i don't know.. at least it is not giving me the light anymore.
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Old 08-07-2009, 06:00 PM   #5
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Re: code 34

wow easy fix!
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Old 08-07-2009, 06:00 PM
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