need help with 84 Z28??????? - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 2 (permalink) Old Aug 26th, 99, 12:45 PM Thread Starter
Join Date: Aug 1999
Location: pa
Posts: 4
Hi maxz1 here ,it runs realy bad misses and smokes bad it's black smoke,I checked the computer codes and it had 12,15,23,45 Ok so I fix the heat wire end, plus fix vacume line that was wrong and also put different MAT sensor on it dist cap & roter, well I started it up it run the same,so I checked for codes it had 12 thats all, how can this be or what could this be,shouldn't it have some codes with all that smoke ????? it made the ground black it's so bad,could it be the motor is bad ?????? THANKS FOR ANY HELP !!!!

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post #2 of 2 (permalink) Old Aug 27th, 99, 03:53 AM
Join Date: Jun 1999
Location: Bayside, NY
Posts: 19
You need to clear any residual memory in the computer. Disconnect the battery for at least five minutes. After reconnecting it, go for a drive. Do not just let it idle because it will read codes as if this is normal usage for the engine. Drive it normally for about a half hour and that may reset the bad timing, fuel curve, etc.

'69 Base Camaro
355, 200-4R trans
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