A little logging

For those who know the EBL P4 inside and out..

Looks decent during cruise, part throttle etc..

W.O.T is lacking, i just ordered a hellcat pump for it.. But.. I keep having this weird stalling in a drive gear.. If you are in park/neutral you are good, will idle and rev or do whatever till the fuel tank is empty, but stop at a light, sit in idle in drive, etc.. It will die out sometimes.. For no reason, cannot figure it out for the life of me..

Like it's losing a signal of some kind..

Any help is appreciated.. i got good log files if someone can check them out, can email them.. Rbob seems to think it maybe a high Map error limit, but when it stalls the MAP isn't super high.. Just cannot figure it out for the life of me.

Has the to ever run correctly? It might be as simple as a vacuum leak in the EGR that is partially stuck open. As far as the log, others here are much more knowledgeable than I am about the OBD1 stuff. Things to check would be oxygen sensor voltage, IAC, and desired idle speed in gear. You might check the transmission gear selected also, that would tell the computer that you were in gear.
Jeff

is the iac increasing or decreasing when it dies?
plotting events for iac, timing, o2, rpm.etc right before it dies should indicate whether the ecm is misbehaving or whether the engine is. i would expect if its a mechanical or electrical problem that the ecm would be increasing iac to try to keep it running

Quote:

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Originally Posted by steveo

is the iac increasing or decreasing when it dies?
plotting events for iac, timing, o2, rpm.etc right before it dies should indicate whether the ecm is misbehaving or whether the engine is. i would expect if its a mechanical or electrical problem that the ecm would be increasing iac to try to keep it running

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I have the logs, just wont let me upload them here...

I just uploaded to a hosting service if you wanna take a look..... I put the 2 log files and whatsup cfg file in it.. https://www.mediafire.com/folder/sod...o6a/Tuning+car

Quote:

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Originally Posted by steveo

is the iac increasing or decreasing when it dies?
plotting events for iac, timing, o2, rpm.etc right before it dies should indicate whether the ecm is misbehaving or whether the engine is. i would expect if its a mechanical or electrical problem that the ecm would be increasing iac to try to keep it running

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So i have went now in the Advanced XDF and made a few slight adjustments and triple checked all option words, etc.

When in gear, it always shows "OD" on the whatsup display, no matter what gear, 1,2,D, OD, etc.. It's a 700-R4..... I increased idle speed commanded 100rpm in drive to 700... Before the IAC held in the 40's-30's steady....

It's just so weird.. It's never had a hiccup one when driving, once you pull out, or in Park/Neutral either it does fine, runs like a champ.... Just in idle in gear it will stall out of nowhere for no reason.... If you hold the brake and barley touch the accelerator it will stay running.... So i have made some adjustments..

Hopefully the small changes i made will have an effect and line it out.. I may crack the TB blades open just slightly more also... Double check TPS voltages at idle etc.