ISV ISV ISV ISV ISV

[Brian Devlin]

The other thing to check is, the cold start injector. You can pull it 
out and look for a clean spray pattern (please stick it in a 
container instead of spraying your ignition wires).
Noise and vibration are normal for the ISV, but I never noticed one 
getting warm. You might try a junkyard for the ISV, but they probably 
go pretty fast. Look at VWs in addition to Audis, I have exchanged 
ISVs with  an 88(?) Jetta with no problem.
-Brian

>Howdy folks, just in case you weren't sure what this post is about,
>it's about my 4kq ISV.
>When I start my car -- if it's warmed up, it starts right up... Even on
>a warm DAY it starts fairly well (usually anyhow), however, the
>colder it is, the more trouble the car has.. Not that it doesn't turn
>over or anything like that, it's just that it runs, and stutters... Wants
>to die about every 4 seconds or so, and then surges.
>On a cold cold morning, I usually have to nurse the gas for the first
>30 seconds or so to keep it alive and then let it run for a few
>minutes before I start driving.  (otherwise there is more hesitation
>than acceleration)
>I figured the ISV was sticking, makes sense right?  So I pulled it
>out, cleaned it up with some carb cleaner overnight and flushed it
>out as best I could.
>That didn't change a thing at all, and figure an easy solution may
>be to just get a new one?  But they're pretty pricey for such a little
>doo-dad and wonder if maybe I could look anywhere else before I
>go and do that...
>One thing I did notice is that if the key is in the on position but the
>car is not started, the ISV continually makes a series of buzzing
>noises, vibrates, and gets kinda warm... Is that normal?  I dont
>know how the thing works really.
>
>Carl
>
>PS You guys are the best, I've saved a few hundred dollars over the
>past few months thanks to simple advice I've gotten on this list. :)