Idle issues.....

[JimX]

I've been reading the "this low rmp idle problem"  thread - or whatever it is called - and 'the phantom' reckons that a thing called a dashpot is the go

 

From what I understand - it attaches to the TB - and lets the butterfly open quickly,  but close slowly - which fixes the reversion problem ..

I was about to suggest you read that thread, but then I saw you found it yourself

The dashpot sounds like an interesting idea, however when my car had the problem I found I would have to release the throttle *really* slowly to not stall. If that amount of slow throttle release happened every time I think it would be at least annoying, and at most dangerous to drive. I found that I could rev it in idle and then let go quickly and it wouldn't stall, it seemed to only stall if I was slowing down from normal cruising speed. Yours may be different, I don't know, but the EIDS thing seems like it might do a "smarter" job.

Just one question, hope it's not too obvious - Did you teach the PFC to idle with the 10 minute idling thing? Before I got my PowerFC I had the stalling problem fairly bad. When I taught the PowerFC to idle it was still there but muchly improved. And after a couple more weeks of normal driving without actually "teaching" it to idle, it seems to have cured itself. It still does happen very rarely but I can't remember the last time it did. You might want to wait and see if it improves of its own accord before spending money on things to fix it.

[B-Man]

I did let it idle for quite a while - more then 10 mins

But I didn't follow the demister, A/C procedure outlined in that thread - I wonder if that makes a difference ? And I wonder if I can do it now - or do I have to reset my PFC (and loose the tune) - or would just powering it on and off by disconnecting be OK ???

[B-Man]

Oh and you don't have to release the throttle that slowly for it to not stall - id these dash pot things are designed for this purpose - I don't see how it would be bad for the car - (as long as they don't leave it WOT obviously).

In my case, I have the Q45 infininity throttle body - maybe the spring rate is too tight or somehting - and it closes way to quickly..... ??? I dunno.

[JimX]

Oh, not so much bad for the car as wasting fuel, and possibly having the car not engine-brake as much as you'd like (which could be bad for certain road conditions). The PowerFC won't lose its tune if you disconnect it, as far as I know it should only lose its idle tune, and even then I'm not really sure it does that. It may well be a continual thing, and it requires at least 10 minutes to override all the previous settings. Which would explain why mine has gotten gradually better even though I did the full 2 or 3 lots of 10 minutes (I forget how many now, but it took ages).

[Steve]

One other thing, what is the TPS voltage at idle?