Code 34 questions
Thread Starter
Team Owner
Joined: Jul 2002
Posts: 22,267
Likes: 15
From: The light that never warms.
St. Jude Donor '12
Code 34 questions
My '85 stumbled and died yesterday. It set a code 34. I read the archives, and changed the MAF relay. It will start still, but then stumbles and dies after about five seconds.
First question - I've read alot about there being two relays behind the battery, but I can only find one, are 85s different?
Second - if it's not the relay, and the MAF sensor is bad, wouldn't it still run, just in limp home mode? Because it will not run.
Lastly, anything else I should be looking into?
TIA
First question - I've read alot about there being two relays behind the battery, but I can only find one, are 85s different?
Second - if it's not the relay, and the MAF sensor is bad, wouldn't it still run, just in limp home mode? Because it will not run.
Lastly, anything else I should be looking into?
TIA
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
Re: Code 34 questions (lite blue)
lite blue, if you have access to a manual, there are 5 steps for checking voltage to the MAF. Step 6 suggests that if sensor and circuits are functional, the PCM may be faulty. The manual also suggests that a common problem is MAF sensor wire damage.
[Modified by Oldman, 4:05 PM 12/18/2002]
[Modified by Oldman, 4:05 PM 12/18/2002]
Burning Brakes
Joined: Feb 2002
Posts: 1,232
Likes: 10
From: Montrose Colorado
Re: Code 34 questions (Oldman)
Lite blue have you tried cleaning the throttle body? Then it says to check wiring and connections especially at the ECM, then relay, then MAF sensor and last possibile ECM failure. Good luck 84 CF 91 ZR-1
Drifting
Joined: Feb 2000
Posts: 1,994
Likes: 0
From: Charleston, WV
Re: Code 34 questions (vettl83)
See if it will run with the MAF unplugged. It should get you around but will be grouchy when cold (so floor it) and it will run a litttle rich. What I mean by "so floor it" is when it pops and backfires it's going Lean I think (haven't verified this yet though) but flooring it brings it out and will get you going until it warms up......... then it'll run fine as long as there is temp in the engine....... I don't understand all this YET but I know it works as I'm driving mine that way NOW :thumbs:
