New ECM ??
Thread Starter
Instructor
Joined: Jun 2006
Posts: 195
Likes: 0
From: Canyon Country CA
New ECM ??
Over the past couple of weeks, the security and sys lights have occasionally flashed on my 93. The service ASR light also comes on. It hasn't made a perceptable difference when it occured while already running. A couple of times I have had to wait a few min to get started. The codes I've pulled are 41 ECM 7 DTC 71 Serial Data Circuit (lost communication). Yestarday I started the car but it ran god awful, missing and spitting and refusing to run below 1800 rpm. I shut the car off, opened my hood, and smacked the ECM with the heel/palm of my hand. The car started and ran perfectly.
Do I need a new ECM?
How long do I have before it completely dies?
What is the best source for these?
Thanks in advance for all of your great replies!
Joe
Do I need a new ECM?
How long do I have before it completely dies?
What is the best source for these?
Thanks in advance for all of your great replies!
Joe
Pro
Joined: Apr 2005
Posts: 590
Likes: 0
From: Boynton Beach, FL
We carry ECMs for all GM and GMC Makes and Models
So, the old smack em up the side of head trick worked. Probably a loose connection in on your ECM PCB. try the guys below. I found them on E-bay. They are in Davie, Fl.
Larry
CHEVY CHEVROLET
Factory-Rebuilt
Engine Computer Module
Tell us your ECM part number and your VIN
We'll reprogram one from inventory for you, test it
and ship it right away
Call the Experts
AUTO COMPUTER EXCHANGE
Toll Free 1-888-664-8787
So, the old smack em up the side of head trick worked. Probably a loose connection in on your ECM PCB. try the guys below. I found them on E-bay. They are in Davie, Fl.
Larry
CHEVY CHEVROLET
Factory-Rebuilt
Engine Computer Module
Tell us your ECM part number and your VIN
We'll reprogram one from inventory for you, test it
and ship it right away
Call the Experts
AUTO COMPUTER EXCHANGE
Toll Free 1-888-664-8787
Race Director
Joined: Apr 2004
Posts: 17,066
Likes: 3
From: Milpitas ca
Originally Posted by catfan123
I am having the same problems with my '92. Exactly the same symptoms. I am having trouble locating an ECM. Good Luck
Joey
Joey
Thread Starter
Instructor
Joined: Jun 2006
Posts: 195
Likes: 0
From: Canyon Country CA
I've decided to buy a ECM as I've had to smack the thing a couple of times on Thursday. I attempted to buy a Borg-Warner unit at Pep Boys. My problem is they list three different part numbers for a 93. The oem numbers listed in their computer dosen't match the number on the sticker on my ECM. Does anyone now how to I figure out which one to order?
Thanks!
Thanks!
Pro
Joined: Apr 2005
Posts: 590
Likes: 0
From: Boynton Beach, FL
Originally Posted by ccford
I've decided to buy a ECM as I've had to smack the thing a couple of times on Thursday. I attempted to buy a Borg-Warner unit at Pep Boys. My problem is they list three different part numbers for a 93. The oem numbers listed in their computer dosen't match the number on the sticker on my ECM. Does anyone now how to I figure out which one to order?
Thanks!
Thanks!
Larry
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