[HawkeyeGeoff]

Originally Posted by dcafs

That is not the correct procedure and it didn't work for me either.

Seems that you have to do a throttle adaptation reset using MHD or some other electronic diagnostic software.

Pressing the gas pedal seems to just be a myth.

Good to know. Thanks!

[335e92tx]

Originally Posted by dcafs

That is not the correct procedure and it didn't work for me either.

Seems that you have to do a throttle adaptation reset using MHD or some other electronic diagnostic software.

Pressing the gas pedal seems to just be a myth.

Key has to be in ign and ign on.

[Chris@VargasTurboTech]

Originally Posted by HawkeyeGeoff

They are Index 5; getting close to 80k on them. You really think they'd be leaking at idle and causing a rich condition?

I do not have any long cranks upon cold starts. It seems to be the same bouncing idle regardless or cold start or warm. And I also do not get any misfires under load.

Furthermore, have you ever seen anyone have success in buying re-maned/cleaned injectors (like index 9's or 11's) off ebay? 700 is a big pill to swallow especially after I just shelled out 400 for a valve cover.

Could certainly be injectors sir. Obviously check the simple/cheap things first. Also, if you can, do a full adaptation reset. I use Bavarian technic to do this, not sure if you can do the same thing via MHD/Carly etc.

A buddy of mine bought the reman'd ones and he's fine at around the 500 whp level. It's a small sample size, but it's all I have for data.

Chris

[HawkeyeGeoff]

Originally Posted by Chris@VargasTurboTech

Could certainly be injectors sir. Obviously check the simple/cheap things first. Also, if you can, do a full adaptation reset. I use Bavarian technic to do this, not sure if you can do the same thing via MHD/Carly etc.

A buddy of mine bought the reman'd ones and he's fine at around the 500 whp level. It's a small sample size, but it's all I have for data.

Chris

Thanks for the advice; I have a bav tech tool so once I finish the valve cover/pcv/sparkies tonight I'll do the full adapt reset.....then move onto coils.....then injectors if it's not solved.

I'll report back here along the way.

[HawkeyeGeoff]

Update:

I replaced the valve cover gasket + spark plugs (NGK's gapped to .022) and replaced the JB4 with an updated JB5 G5 ISO....so now my parameters read correctly.

Here is an idle log:
http://datazap.me/u/gholbein/new-log...1-4-9-10-11-12

And a driving log and a portion coming to a stop light:
http://datazap.me/u/gholbein/new-log...-9-10-11-18-24

I think next will be to try a different set of coil packs and reset adaptations....but it looks like it's misfiring even though i'm not getting any codes because of the large amount of timing changing.

If neither of those fixes it....i'll try injectors.

[ferocity02]

Bouncing timing doesn't mean it's a misfire. The timing it probably moving around because the RPM is changing.

Can you get a log showing long and short term fuel trims for each bank? (I hate JB4 logs)

Have you tried removing the JB4, not setting it to Map 0, but completely removing it? This is a much cheaper check that throwing parts at it blindly.

Since it idles fine for a bit before bouncing I'm thinking it's fueling related, something to do with it going into closed loop.

[HawkeyeGeoff]

Originally Posted by ferocity02

Bouncing timing doesn't mean it's a misfire. The timing it probably moving around because the RPM is changing.

Can you get a log showing long and short term fuel trims for each bank? (I hate JB4 logs)

Have you tried removing the JB4, not setting it to Map 0, but completely removing it? This is a much cheaper check that throwing parts at it blindly.

Since it idles fine for a bit before bouncing I'm thinking it's fueling related, something to do with it going into closed loop.

Can I get those parameters with JB4? Or can I get it using INPA or with the Bav Tech? I have all of those.

And this is actually the 2nd JB4 i've put on the car. The first one was a G4 this one is a G5. I highly doubt it would cause an issue since it was on a previous vehicle and worked just fine.

All it can be is fuel, air or spark. I have a set of known good coils i'm going to get tomorrow. I'm going to try those....if those dont work then I'll reset all the adaptations (I did the JB4 reset 1/7 parameter)...then finally injectors since I have Index 5's.

I honestly think if I could raise the idle it might be totally fine as well; I just do not have a way to raise it though since I do not think this can be accomplished through INPA.

I should note as well that it doesn't always idle fine for a while; once the vehicle is warm it tends to not do so great.

[HawkeyeGeoff]

Update:

I changed the coils with known good coils (thanks to NoGuru !).

I also reset all of my engine adaptations.

The result: SUCCESS!!!

She now purrrrrrrs like a panzer tank.

Just a recap:
- Fixed valve cover gasket
- Changed sparks w/ new
- Changed coil packs with known good coils
- Reset Adaptations via INPA(Throttle, idle, lambda, etc on page 1, all on page 2) and followed the 30 second throttle hold with KOEO before starting.

The car now idles at 650 or 800 whenever it chooses. No stumbles, no shakes, nothing. Smooth as silk.

Thanks to everyone that contributed! Chris@VargasTurboTech ferocity02

[lukasB]

you are the man HawkeyeGeoff I will try to change my coils and see if I have the same problem. What coils did you go with?

[HawkeyeGeoff]

Originally Posted by lukasB

you are the man HawkeyeGeoff I will try to change my coils and see if I have the same problem. What coils did you go with?

The coils I got from a friend have ~50k on them, 5 are bosch 1 is elder.

TBH I think it's the adaptation resets that really did it. I'd try that first since it's free.99 (as long as you have INPA or bav tech tool). I just can't say for certain because I did them both at the same time and I was so happy it was fixed I couldn't bring myself to mess with it more.