ECM fault?

[Gary Derian]

Deposits building up on throttles is a major cause of drivability problems.
Most new cars come with factory applied resin in the throttle which should
not be cleaned off.

Gary Derian <gderian at oh.verio.com>

Dave Z wrote:
> Turns out
> when I cleaned the IAC and throttlebody out, the base passage setting
> on the TB was too large and had to be closed a bit. now perfect idle.
> I still wonder why I had to turn it down so much but spraying causes
> no engine reaction now, so no VAC leaks.
>
> Moral of the story is to remember EVERYTHING that changed when
> diagnosing.. even a little wipe of a throttle plate can get you. I
> too was ready to take the heads off and look for the bolt I thought I
> dropped into the intake ;-{