Just a follow up....
Many times I see post's that end up in nowhere. There is no conclusion. I understand that sometimes people are happy to have their problem fixed and go on with their life's, but I think it is also nice to see the conclusion of a problem and what fixed it.
It seems that my problem was related to multiple sources.
1. Checked for vacuum leaks, (this is the most difficult one) found a rubber coupler leaking, replaced it with a new one on.
2. Checked fuel pressure. Was good. I had replaced the Fuel Pressure Regulator just 3 weeks ago!
3. Checked the Purge Valve. Was at first stuck open, then after the WD40 treatment, was stuck closed (engine ran already better). Had to replace it with one from the junk yard. Works now.
4. Starter Motor burned up. Replaced the starter motor, although unrelated to this post.
5. Checked the EGR pipe. Was blocked! Cleaned that one out. MIL went almost instantly off. Engine has power in the mid to high load range. Idle is still a little tiny bit rough.
6. Reset the ECU to mean values.
I am confident that it will now run as it should.
Arthur Dalton, was a great help in troubleshooting, many thanks to him.
Cheers
__________________
Mostly, I don't know notin, I just know where to look.
I am looking back, to over 30 years in Electronics Design.
Electrons don't care if they move in a car, computer or relay!
95 W124 E320 M104.992 - Because, I love to repair, naaaah!
Over 221,000 Miles
Cheers,
Norbert
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