[LATECH]

We determined the Ecm was bad after we discovered the secondary Ignition coil was bad. This is on a 98 B 2500 Mazda (ford) pickup. The secondary Ignition coil wasnt firing ,and we determined the ECM is why it wasnt firing. BUT The secondary ignition coil had an internal Short that was leaking High voltage and the picture is where all the voltage was going.
The coil was bad and was the root cause here.
Allways be sure when replacing an ECM that you find the cause. Just thought you all might like this.
This applies to all vehicles a well.
The check engine light had been on and off for a few months he said and new plugs didnt help.Thats when they brought it to us.This is a good example of why you should have your check engine light looked at ASAP when it comes on. Coils are cheap, ECM's ....... Not so much.

[LATECH]

!!!!!!!!!!!!!!!!!!!!!!!!!!

[pepi]

I am not so sure that it took very much time to cause that. Fried solid state components happen fast. Not many second chances.

[LATECH]

Yeah sometimes it can , I have a feeling this would not have happened if it had been checked out properly at first when it started acting up.
Look at the charcoal on the IC that didnt happen after a couple jolts. That cooked for a while.

[LATECH]

But one good jolt can defenitley take one out.

[pepi]

ya start cooking those things the specs start going all over the place. Changes the game.

[LATECH]

Thats the crazy part. There were only a code stored for the coil primary circuit.Other than that the data stream looked normal.

[pepi]

It might not produce a different set of codes, just the way the parts play together. I would guess that a code is the result of a hit on the channel it monitors, and therefore it would only indicate failure of the monitored item. What happen first the ECM failure or the coil, I do not believe the ECM would be smart enough to give you that information.

[vicrod]

This is classic example of "my design is correct don't bother me" .
The nerds that design this crap should be made to work on it for 2 years to make sure it's dependable.
I know, it would cost to much, bla, bla, bla.
It seems that no attention is paid to what we call the "fault modes" or the "what ifs". Not to mention redundancy.
Toyota's recent issues are an example.
Or maybe they do have an interest in getting owners into the dealer's repair shops. But that would giving them to much credit.
Ahh, now I fell better.

vicrod

[LATECH]

Originally Posted by vicrod

This is classic example of "my design is correct don't bother me" .
The nerds that design this crap should be made to work on it for 2 years to make sure it's dependable.
I know, it would cost to much, bla, bla, bla.
It seems that no attention is paid to what we call the "fault modes" or the "what ifs". Not to mention redundancy.
Toyota's recent issues are an example.
Or maybe they do have an interest in getting owners into the dealer's repair shops. But that would giving them to much credit.
Ahh, now I fell better.

vicrod

Hee hee hee.

[LATECH]

The NHTSA determined that there were no electronic malfunctions causing the sudden acceleration in Toyota vehicles.
Those people who were crashing all worked for ford. LOL

[vicrod]

Yea, I head that. Oh goody its not the computer that killed those people.
So what caused the problems?
I'm think we may never know.
And it seems, there is no going back to simple.

vicrod

[pepi]

That is also called beta or field testing ...

As to the sudden acceleration, stupid drivers trying to avoid responsibility. If you work on machines long enough, and I do not care what type of machine. The one truism is people always blame the machine, they make up stuff to point that finger at others.

[pepi]

Originally Posted by vicrod

Yea, I head that. Oh goody its not the computer that killed those people.
So what caused the problems?
I'm think we may never know.
And it seems, there is no going back to simple.

vicrod

May I say drive by wire ........ what sense does that make?

[vicrod]

A sign of the times. We accept mediocrity as the new normal.
One example is cell phones.
Put it out on the market and the majority won't give a crap if the things only work X% of the time. Company makes profit and that's all that matters. The "small" people will buy it and be quiet.
Now, hotrods, that's another thing. !!!!!!

vicrod