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I have a 91 cadillac seville 95,000 miles. 4.9. I got it

Customer Question
this way. It wont idle...
I have a 91 cadillac seville 95,000 miles. 4.9. I got it this way. It wont idle and barely starts runs ruff i have tested all injectors found one bad and i replaced it compresion is all above 150 lbs. Put new plugs and wires on it and cap and rotor. Still the same. Im gussing ecm but not sure. I unpluged it and pluged back in no change i have cleand all grounds no change..
Submitted: 2 years ago.Category: Cadillac
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Answered in 1 day by:
8/10/2015
Cadillac Mechanic: Ron, ASE Certified Technician replied 2 years ago
Ron
Ron, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 36,359
Experience: 34 year as an ASE Tech
Verified
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
The problem you are describing could likely be a failing ECM but I would also make sure you have proper fuel pressure (32 to 38 PSI ) and I would also make sure there is no restriction in the exhaust system before you consider replacing the ECM.
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Customer reply replied 2 years ago
Fuel pressure was 42 .44 lbs . Exhaust checked out good. I found a bad fuse and was able to get it to idle. But still have missfire on 3 and 8. Checked ig coil and it was bad so replaced and nothing changed . I replaced hall effect, pickup assembly, ignition module and put it back together and it burnt the new coil out again. I heard a bad connection in the red power wire could be the cuase but ran out of time last nite.
Customer reply replied 2 years ago
Ok
Cadillac Mechanic: Ron, ASE Certified Technician replied 2 years ago

Okay so are you saying the problem is resolved?

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Customer reply replied 2 years ago
Ok no car wont start now after rebuilding distributor. Coil still making a spark of the white wire bout to go double check everything i did
Customer reply replied 2 years ago
Ok
Cadillac Mechanic: Ron, ASE Certified Technician replied 2 years ago

Okay recheck the spark as well as injector pulse , if you have both as well as proper fuel pressure the engine should start and run normally.

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Ron
Ron
Ron, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 36,359
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