New ECM, Problems help!!
Thread Starter
Instructor
Joined: Dec 2004
Posts: 105
Likes: 0
New ECM, Problems help!!
Long story short, had a problem, unplugged MAF, bought new MAF, problem remained, went to mechanic, referred to dealer, went to corvette specialist (Javiers Corvette).
Was told it was bad ECM, On way home check engine light was flickering very (i mean very) fast. Stopped car (turned off) then put key to ignition position and the check engine light is flickering fast without the car even on?
Is this a relearn period or something, What do you think it is. I'm going to take it back but I wanted advise. Thanks
Was told it was bad ECM, On way home check engine light was flickering very (i mean very) fast. Stopped car (turned off) then put key to ignition position and the check engine light is flickering fast without the car even on?
Is this a relearn period or something, What do you think it is. I'm going to take it back but I wanted advise. Thanks
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Sounds like the ECM is bad, its most likely a reman unit and its not uncommon to get a bad one. Especially if this problem wasn't there before. Ask they mechanic to reinstall the original ECM to see if the problem reoccurs.
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Michael S. Palmer
Instructor
Joined: May 2005
Posts: 247
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From: Ramona CA
Originally Posted by Morley
Bad ECM or pins A&B to the ALDL are shorted together somehow.
With engine off and key on, is the fan running? If so you have those 2 wires shorted somewhere along the line.
With engine off and key on, is the fan running? If so you have those 2 wires shorted somewhere along the line.
Drifting
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
Originally Posted by skelly1
My fan runs when the key is on. I don't believe that the ALDL is shorted with anything. ???
Now, if your fan runs all the time AND the check eng light flashes when the engine is running, the ALDL is shorted A to B (this is a field service test procedure)
