Cadillac Repair/bad ECM

Advertisement


Question
84' Cadillac Fleetwood brougham with 74k miles.
While coasting to a stop the engine cut off in such a manner as if it was a light switch. I noticed a distinct smell shortly after. It was my ECM. A burnt transistor, as well as a fuse to one of my fuel injectors. Replacing the fuse only had it burn out again. So.... any help would be greatly appreciated. Thank you for your time.

Answer
disconnect the wires from BOTH injectors and check BOTH injectors with an ohm meter to see if they read about the same.

Does sound like a bad ECM, BUT, You should ohm out all 4 wires to be SURE that you do not have a wiring problem BEFORE you install a new ECM. If you DO have a wiring problem and you install a new ECM you will DESTROY the new ECM.

You can get pictures, directives and telephone support by e-mailing: onlineautohelp@msn.com

Cadillac Repair

All Answers


Answers by Expert:


Ask Experts

Volunteer


autohelp

Expertise

On hands professional expertise in all aspects of Cadillac diagnostics and repair mid 1970`s thru 2000 year vehicles. GM certified in electronic fuel injection, Automatic transmission, Heating and A/C, and onboard vehicle computer diagnostics.

Experience

Held over 15 GM certifications prior to retirement in 1989.

Organizations
Prior to retirement held several ASE certifications, numerous Factory certifications.

©2012 About.com, a part of The New York Times Company. All rights reserved.