Old ECM pics
Thread Starter
Burning Brakes
Joined: Aug 2001
Posts: 1,013
Likes: 0
From: Pa
Old ECM pics
I kind of promised a while ago that when I got some time that I would share the pics from my fried ECM.
Here’s the first picture, it’s the top of the circuit board in the ECM. Notice the green foil lamination where the components are soldered onto.
The second picture is the bottom of the board. Notice how the green foil lamination is all bubbled up.
My car would run one day and not the next. It got to the point that it wouldn’t run at all. I replaced all kind of stuff, then I replaced the ECM and it’s been running great ever since.
It drove me :crazy:
[Modified by Quasar92Blue, 8:00 PM 7/22/2002]
Here’s the first picture, it’s the top of the circuit board in the ECM. Notice the green foil lamination where the components are soldered onto.
The second picture is the bottom of the board. Notice how the green foil lamination is all bubbled up.
My car would run one day and not the next. It got to the point that it wouldn’t run at all. I replaced all kind of stuff, then I replaced the ECM and it’s been running great ever since.
It drove me :crazy:
[Modified by Quasar92Blue, 8:00 PM 7/22/2002]
Thread Starter
Burning Brakes
Joined: Aug 2001
Posts: 1,013
Likes: 0
From: Pa
Re: Old ECM pics (Rich B.)
If you look to the left of my thumb, it is kind of pronounced. It’s a lot easier for me to see on my 19” screen than it is on my laptop. The green foil lamination is actually bubbled up on the entire underside of the board. Not the best picture in the world, but if you look at it close enough, you’ll see what I mean.
Don't have it anymore, so I can't get a better pic :(
Still new to the world of digital photos.
Don't have it anymore, so I can't get a better pic :(
Still new to the world of digital photos.
Instructor
Joined: Jul 2001
Posts: 130
Likes: 0
From: Torrance CA
Re: Old ECM pics (Quasar92Blue)
The green lamination consists of the copper circuit traces and green shellac that serves as an insulator and protectant. The "bubbling up" look comes from solder that was deposited on top of the copper.
I'm sure you're correct that the ECM is bad, but the traces are normal.
When they burn, they turn brown.
I'm sure you're correct that the ECM is bad, but the traces are normal.
When they burn, they turn brown.
Melting Slicks
Joined: Aug 2001
Posts: 2,516
Likes: 0
From: Lockport NY
Re: Old ECM pics (Quasar92Blue)
You didn't say what year Vette this was out of...
The first year or so, there were problems with the C4 ECM boards. Most were recalled and changed, some were rebuilt by outside mfgs; the AC Delco ones were identified by a sticker saying "Remanufactured".
I had an old service manager in Buffalo tell me a story about a new Vette they got in from GM (with 9 miles on it!) that had a "bad" ECM board in it. It didn't sell right away, so they swapped in the new "Remanufactured" ECM (rare that a dealer would fix it beforehand, but Hey!).
The point of this little anecdote is that it is possible that a brand-new C4 could have had a "Remanufactured" ECM in it...
...But it's more likely that a "bad" ECM could go for years without being changed...
The first year or so, there were problems with the C4 ECM boards. Most were recalled and changed, some were rebuilt by outside mfgs; the AC Delco ones were identified by a sticker saying "Remanufactured".
I had an old service manager in Buffalo tell me a story about a new Vette they got in from GM (with 9 miles on it!) that had a "bad" ECM board in it. It didn't sell right away, so they swapped in the new "Remanufactured" ECM (rare that a dealer would fix it beforehand, but Hey!).
The point of this little anecdote is that it is possible that a brand-new C4 could have had a "Remanufactured" ECM in it...
...But it's more likely that a "bad" ECM could go for years without being changed...
Melting Slicks
Joined: Aug 2001
Posts: 2,516
Likes: 0
From: Lockport NY
Re: Old ECM pics (Quasar92Blue)
..."9278"...???...
That's a new one on me... :crazy:
And that interior of your ECM doesn't look anything like the 165 or 730 I have...
Guess it must be some "superseded" part #... :confused:
(Mine says "Remanufactured by AC Delco"...It's a 165)...
That's a new one on me... :crazy:
And that interior of your ECM doesn't look anything like the 165 or 730 I have...
Guess it must be some "superseded" part #... :confused:
(Mine says "Remanufactured by AC Delco"...It's a 165)...
