gm idle valve

[Bernd Felsche]

Peter Gargano tapped away at the keyboard with:

> Ludis Langens wrote:
> > 
> > It is a stepper motor.

> I've often wondered what the correct procedure for re-lubricating
> these Idle Air Conttrol (IAC) valves is? I've recently had two get
> "sticky" and I've just swapped them for newer ones, rather than
> cleaning and lubing. Anyone got some well tried tips?

I've had the idle stabilizer in my Golf (it's an oscillating type)
out once every year of so for cleaning - after buying a replacement
after two year ($450!!). So I thought it worthwhile to try to keep
it clean. The replacement valve has held up now for about 8 years.

First of all; clean the bugger. A good soaking in carby cleaner.
(Some people say brake cleaner is better; it might clean faster but
seems way too agressive.) Send an apprentice down to the corner shop
and buy a Magnum Classic icecream.  Enjoy.

Then use the paddle to scrape away any deposits that remain in the
valve and flush again. A few drops of engine oil on the valve
certainly won't hurt. Just a few.  Too much oil will attract all
sorts of buildup.

I'm trying a secret formulation that supposedly works better than
engine oil and doesn't develop into a sticky surface in a short time.
It's NOT silicone-based, or PTFE. I'll see what it's like in another
few months.
----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org