Dwell / Duty Cycle Q.

[camron at worldaccessnet.com (Camron D. Crouse)]

Yesterday after DEQ I stopped by my local Euro-FLAPS but they didn't 
have a replacement idle screw or O-ring... sounds like hardware stores 
don't quite have the right size either, but maybe I'll look the next 
time I'm down with Ace.

I see what you are saying about backing off the tape and losing seal, 
but when I wrapped the teflon tape I wound it fairly thick, and also 
made a few turns of tape all the way up past the O-ring. I made sure to 
wind the correct direction such that it would not unravel while 
inserting the screw, and I noticed that when I back the screw off a bit, 
the teflon stays put and does not turn anymore (the screw spins firmly 
but smoothly in/out of it), so I don't think the tape got all gobbered 
up the way it can when it's put on really thin.

At any rate, it seems to work; when I unwind the screw, the idle goes 
up, and when I wind all the way CW it settles just fine at target idle 
~900RPMs and is stable.

I hadn't cleaned out the ISV, maybe it's got some of that yellow snot in 
it like what was in the crankcase breather hose and that's throwing off 
the duty cycle #'s!

BTW no coolant sensor disconnect on CIS-E according to R.B.

Thanks everyone for letting me share my bellybutton lint, I think we're 
under control ;)

- Camron from Vancouver, WA USA
   '86.5 Black 16V 2.0L

*****************

Sean Whalen wrote:
> Hey Cam,
> 
> You shouldn't have the idle screw in all the way, otherwise there is 
> really no reason to have one.  The Teflon tape is working because it's 
> around the threads, that's why the screw bottoms before it's does 
> anything.  Now that you've backed it off the tape is essentially 
> worthless, the compression of the tape is what makes it work.  Of course 
> I don't have my book with me again, but are you supposed to unplug the 
> NTC coolant sensor for this test, I can't remember.  As far as the 
> hoses, I think that's it; the Bentley is just showing you a picture from 
> an A-2, same difference.  In fact I think you'd be a lot happier if your 
> fuel system were on the passenger side; I know I hated the Scirocco side 
> on my Cab, it was way to tight.  One last thing, are you absolutely sure 
> your O2 sensor is functioning properly.  It threw Gordy and I for a 
> while with mine.  That and a broken wire to the coolant sensor that 
> looked connected because it was still inside of it's boot.
> 
> Sorry to ramble on.  I'm just across the river in Parkrose if you ever 
> need a hand.
> 
> Good luck,
> 
>