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code 42 ecm problems

Old May 1, 2006 | 06:33 PM
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gumbytransam's Avatar
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Joined: Apr 2006
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From: Rhode Island
Car: 88 Firebird Formula
Engine: 5.0 F.I. TPI
Transmission: 5 Speed Manual
Axle/Gears: 10 Bolt Posi
code 42 ecm problems

Hi Everyone,

I have an 88 formula 5.0 5 speed. It was bucking like crazy and would stall at an idle. I gave it a tune up and nothing. I noticed that after a while the ecm quit on me. The check engine light would no longer come on and the car would not start. I replaced the ecm and the car lit right up. It lit the check engine light. I checked the code and it was a code 42. I replaced the spark timing module and the car immediately ran great. No stalling sputtering or anything. I took the car for a ride and was very pleased at the way it ran. When I came back I shut the car off and went inside. I went out to start the car and again the check engine light would not come on. This ecm is dead now too. The fuse is ok. Any ideas???
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