While playing around with my datalogger tonight trying to resolve my hi boost miss (which today became a low boost miss also), I discovered that my timing at idle is all over the place. Like as high as 12-14 degrees and as low as -1.0 degrees. That's right less that 0 degrees of timing

What could cause this? The timing bounces constantly at idle, but if I go up to even 1400 rpms it smooths out and stays steady. This thing is driving me NUTS!!:o

Greg

'19 Genesis G70 3.3t AWD
'88 Chrysler Conquest TSI

What should the timing be at idle? I am going to hopefully datalog my car this weekend.

Dave
05 Ford F150 SuperCrew FX4

I datalogged this afternoon and i found that this is the case also. my timing below 1000 rpm is anywhere from -4 to 10 or so. i was thinking that this was peculiar. is something not right when my idle timing is -4?
thanks
james

Rest In Peace Heidi Doggy

is this the advancing which you all are talking about at idle? if so for me im around 5degree advance at idle if i remember right... hey james, hows it going dude? hows the tuning coming along?



Michael 99gs
HRC Stage 2
http://www.dreamwater.net/purplebeast

Michael
99gs hrc stage 5000 SOLD...
2004 Honda Accord V6 (240 hp)stock
what other car should i buy?? hmmm
Car info & pictures at http://www.cardomain.com/memberpage/520269

mine used to do the same thing at idel. Worried me the first time i noticed it. But it never seamed to affect the car in any way i could tell

That's normal. Every car i've datalogged has done that.

When i started getting a weird miss like that, it turned out to be a loose cam angle sensor. Check your cam angle, your crank angle, your plugs, coil pack, etc..

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

I know where the cam angle sensor is but where is the crank angle sensor. Is it behind the block?

Dave
05 Ford F150 SuperCrew FX4

directly above the oil filter.

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

I pretty much have the same problem. I have never datalogged my car; I think it has to do with the big 625cc injectors. When I lean out the "idle" fuel map to the point where the air/fuel meter will cycle back and forth, the car runs rough and wants to cut off. If I allow the air/fuel meter to stay rich at idle, then it's idling too rich.

Kon Chittavong
HRC: Stage IV | http://laoracer.homestead.com/mainpage.html

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Kon C

"Sometimes, a man has to do what a man has to do."

I can see some cycling of the timing advance. But going to negative numbers? And cycling like an o2 sensor? 2 weeks ago the car idled normally. All the time. Now it wants to die at a light when the timing goes negative. (I haven't changed anything either) I'm really starting to get frustrated. And it doesn't dip to negative numbers any other time while driving.

Greg

'19 Genesis G70 3.3t AWD
'88 Chrysler Conquest TSI