Revs dropping when lifting off

[sidrick]

After changing the ICV on my car it now idles well (well, okay) but ever since I've had it I've had a problem with the revs dropping to stalling levels when changing gear or just reving in neutral. I.E. When shifting from 2nd to 3rd gear I put the clutch down and the revs drops to an indicated 2-300rpm before it stabilised.

It sounds like an air leak to me, but has anyone experienced similar?

[Thuppu]

Worth a try: http://www.s2forum.com/forum/showthread.php?t=59449

[sidrick]

Certainly sounds similar to my issue. I should have said, I have a '91 3B.... does this sensor exist on my car?

**Looks like it does and for the price of the one you linked on eBay I might as well switch it out.

[UrS4boy]

Certainly sounds similar to my issue. I should have said, I have a '91 3B.... does this sensor exist on my car? **Looks like it does and for the price of the one you linked on eBay I might as well switch it out.

Audi PN 035919369M or Bosch Bosch 0280130037?

[sidrick]

Audi PN 035919369M or Bosch Bosch 0280130037?

That's what I've bought, yeah

I'll be doing a bit of a sensor refresh along with the timing belt in a couple of weeks.

[Rusty]

Check the idle switch on the tps is being triggered too

[sidrick]

Check the idle switch on the tps is being triggered too

I thought this too, but wasn't exactly sure how I check

[vertigone]

Got this on my 3B

Solved by adjusting the dashpot . It wasn't adjusted properly to easy the throttle closing so it was slow and gentle (so as to not bang shut). I adjusted the dashpot position and then rotated the throttle position switch so it registered open/closed properly.

[Rusty]

You can hear the microswitch click but it's quiet so engine off in a quiet place. Open the throttle and then close it and listen

[UrS4boy]

Got this on my 3B

Nice to see my AAN photo being put to good use.

[sidrick]

Thanks guys, I'll give those two a check tomorrow

[sidrick]

While the gurus are here, on a completely unrelated subject, is an alternator replacement a bumper off job?

[Rusty]

Don't think so, should be able to get to the bolts with a ring spanner ok.

[andyg plym]

no need for bumper off

[sidrick]

Gents

Again proving why this is the #1 forum in Audi-land.