Have you tried a Fuel Pump? My 2.1 was hard starting and lumpy idle. A
new pump was amazing. I pulled it apart and one of the brushes was all the
way down and the armature was chewed up.
     I chased a bunch of issues until one day it would not start and I
whacked the pump with a hammer and it started up. It was the furthest thing
from my mind.

   Stacy

On Sat, May 16, 2020 at 9:21 PM Steven Mills <lefthanddrive123@gmail.com>
wrote:

> Will try to be brief, but lots to the story. Have 87 Westy with idle
> issues. New items include engine bay wire loom, TPS and GW throttle body.
> Idle is low and sometimes erratic. Idle control valve does not vibrate/hum
> but will open/close on bench test. idle Control Module and valve has been
> changed out with spares I have to no avail. All grounds have been cleaned
> and secured. So, my question centers on whether or not the ECU can
> partially function but still be dysfunctional as to the idle. Any
> thoughts/ideas would be appreciated.
>
> Sent from my iPad

--
   1989 Swedish Tristar with Aluminum gates and Atiwe 16" Wheels.
    Oldest son is an Eagle scout.