ECM fault?

[Akselrud, Boris]

1. I am dealing with the problem for three years
2. I've done all the
scanning/scoping/replaising/maintanence/doublechecking/dealership/shop
3. I do have bought a service manual from Helm Inc and have it memorized
4. I've done everything that was suggested so far by the mail list and done
it multiple times in past

I have stated in my original post that I have done all that you are talking
about before I even though of posting on the mail list. What we were doing
so far is reiterating things that have been done by me with the engine.

The objective of my post was to see if there is a commone experience with
that particular engine and ECM which woudl cause such idle behaviour.
Apparently there is not and I have an abnormal case.

If there is nothing that I have not tried so far and nothing new can be
suggested, then the thread is over.

I am greatful for everybody's input.

PS: Idle fluctuation is about 50..80 RPM, but when it falls it is causing
roughness and shaking the whole body.

-----Original Message-----
From: David Cooley [mailto:n5xmt at bellsouth.net]
Sent: Wednesday, November 10, 1999 11:50 AM
To: gmecm at efi332.eng.ohio-state.edu
Subject: RE: ECM fault?


Boris,
Blunt and to the point:
You said the vehicle has done this for 3 years.  Why suddenly it's a 
serious issue?
You haven't said how many RPM's the idle hunts up and down, you haven't 
provided *ANY* scan tool data IE: block learn/integrator (Fuel learning) 
values, recomendations have been made and you change the subject in the 
next message and skip over the suggestion.
Troubleshooting *MUST* be done in an orderly manner if it's to turn up any 
problems.
There is a wealth of info on this list and people that are willing to bend 
over backwards to help other list members out, but you have to be willing 
to take that advice and apply it or you'll get no where.
The first step you need to take is to buy a service manual so you can check 
the basics, Plugs, Wires, PCV valve etc.  the ECM/sensors should be the 
last thing checked after all the normal mechanical/vacuum related items.


At 11:19 AM 11/10/1999 -0500, you wrote:
>I am wondering if there is anybody on that list who is doing engine/ECM
work
>for living, has seen 5.7 TBI run smoothly at idle and has experience with
>these, within drivable distance of New York City and don't mind looking at
>my case?
>I feel I've done everything I could myself as well as dealership/auto shop.
>

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David Cooley N5XMT Internet: N5XMT at bellsouth.net
Packet: N5XMT at KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
We are Borg... Prepare to be assimilated!
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