ls911

Follow up

No video clip, sorry

Reason being is that the idle has completely smoothed so I don't feel the need.
Maybe I did not give it enough time after the cleanings.
I have put a few hundred miles since and it is night and day different .
As stated before, the TB and MAF did not look dirty but one or both of those settled down my idle

Thanks you all for the help

Chao,

Might want to look into spray cleaning if you have not done so already. This could make a big difference for you as well. A 50-100 rpm swing might not be normal (?).
I'm now holding steady within 10 rpm.

ElTorrente

Mine has always hunted around 50-100rpms or so, but is smooth when I have the AC on. I had the throttle body cleaned a while ago and that didn't seem to change anything. It's never stalled or anything, and I'm not concerned with it. It idles better than a v8 with a hot cam.

Benjamin Choi

i actually looked at my gauge to see if i can lend a hand here... and realized... fellas... 50 rpm ... that's barely a twitter on the gauge since each mark is what... 200RPM?

the question should be, does your needle gauge move? yes, my rpm needle moves at idle. tiny twitch and if u can call that 50rpm then it's 50 rpm. not 100rpm.

yasuro

at start, my car is at around 1 hash mark above 1000 RPM.

after a few minutes it idles at 1 has mark below 1000 RPM and "hunts" within the limits of the has mark (maybe 50 RPM?).

i've got a 2001 c4 with 60k miles, original engine.

chsu74

Hi Ludwig,

Spray? Can you post a pic? This is for the MAF right?

Thanks
Chao

pongobaz

yup, mine does the same even after a full cleaning of the TB. Normal.

Benjamin Choi

if we wanna get porsche nerd about it, it's a beating heart

himself

FWIW, I was in a GT3 this weekend with a digital readout. At idle, the car engine moved around 40-50 RPM or so. It was never locked.

-td

ls911

That's right

Hello Chao

Will not turn down a pic request

Got it at Napa. Worked great for me. The MAF is a pain to take off (clip at the bottom) so I got a hex set as well (T-20 was the correct size) in order to take off the 2 screws.
Found it to be better to do it this way since I was struggling to un-clip, used to have the same issue w/bras
Cost of tools and spray cleaner approx $20

I can't say my RPM's are even moving 50 now, but lets just call that a twitch. I know before it was jumping around quite a bit, not a normal heartbeat

NNH

Mine occasionally hunts when it's very hot, like after a track session. The oil pressure hunts a little too, under the same circumstances. I hope it's not a problem!

cdodkin

I've noticed that my idle is smoother if I leave my 996 on it's battery maintainer between drives. (AC on as well)

So I'm assuming that the extra alternator load of a less than charged battery is pulling down the idle if I don't use the maintainer.

Difference was night and day when I bought the maintainer - for me any way.

ls911

That's interesting...good info to know

chsu74

Thanks for the info. Mine runs smooth most of the time and will +- 50 rpm at times.

cdodkin

Worth the $70