code 12.will not start
Thread Starter
Senior Member
Joined: Feb 2006
Posts: 682
Likes: 0
From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
code 12.will not start
driving car bout 15mph then it just shut off as if I turned the key off. no fire from coil. put new one on it still no fire. did the paper clip thing and it just keeps flashing code 12 over and over.
Junior Member
Joined: Apr 2004
Posts: 28
Likes: 0
From: Warsaw
Car: '89 Chevrolet Camaro IROC-Z
Engine: LB9 305cid TPI
Transmission: TH700R4
Axle/Gears: 10-bolt, 3.42
Re: code 12.will not start
Code 12 is just ECM reporting in. It SHOULD always flash it. Try replacing the ignition module (it's inside the distributor, under the distributor cap).
Thread Starter
Senior Member
Joined: Feb 2006
Posts: 682
Likes: 0
From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: code 12.will not start
I know. but it had code 32 stored and its not even showing up. just the 12. new module ddnt work. pick up coil maybe?
Supreme Member
Joined: Jun 2011
Posts: 2,036
Likes: 5
From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: code 12.will not start
you didnt get the ICM from auto zone , did you ? i personally have gotten many ones from them , bad right out of the box. i go to oreilleys and get BWD select parts
Thread Starter
Senior Member
Joined: Feb 2006
Posts: 682
Likes: 0
From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: code 12.will not start
put brand new duralast gold dist. in car. fired right up. but now when I put it in gear it dies. that and after bout a minute of warming up it starts messing up then comes out of it. still dies when put in gear though.
Joined: Aug 2008
Posts: 410
Likes: 38
From: Lansing, Mi
Car: One owner '88 IROC 50k
Engine: L98 with bolt ons.
Transmission: T56
Axle/Gears: 3:42 again
Re: code 12.will not start
Check the initial timing also confirm that fire order correct 18436572 easy to have a plug wire in wrong order and if right one engine will run but will have no power
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