E38 LH6 5.3 DBW problem
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From: YUKON
E38 LH6 5.3 DBW problem hey Guys and Gals,
I'm having a interesting issue with my latest swap. First time playing with a standalone e38. My Gas pedal will work perfectly KOEO, when its running i can get WOT if i give it throttle gradually, if i punch it she gets to about 3500rpm then dead pedals. Shut the engine down restart i get my pedal back.
anyone have any comment?
The ECM and the pedal are from the same donor.
Im assuming its related to torqe management or somthing. No DTC's or anything
Kind of puzzled here
I'm having a interesting issue with my latest swap. First time playing with a standalone e38. My Gas pedal will work perfectly KOEO, when its running i can get WOT if i give it throttle gradually, if i punch it she gets to about 3500rpm then dead pedals. Shut the engine down restart i get my pedal back.
anyone have any comment?
The ECM and the pedal are from the same donor.
Im assuming its related to torqe management or somthing. No DTC's or anything
Kind of puzzled here
It's probably a setting within the PCM. Improperly setting some of the torque management values on drive by wire vehicles will cause odd behaviour likely resulting in reduced engine power (dead pedal).
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From: YUKON
With the tune i got loaded up right now,
Its the factory base Tune with Vats patch 1&2 enabled, Starter Checks disabled, Evap and rear O2 DTC's set to no error reported, set to manual trans with clutch pedal interlock disabled.
Edit: The Tach signal is also set to Crank for my Tach
Its the factory base Tune with Vats patch 1&2 enabled, Starter Checks disabled, Evap and rear O2 DTC's set to no error reported, set to manual trans with clutch pedal interlock disabled.
Edit: The Tach signal is also set to Crank for my Tach
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From: YUKON
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From: YUKON
Thread Starter
Teching In
Joined: Jan 2017
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From: YUKON
Heres some background on my project,
08 silverado chassis chopped and 4x4 deleted
Stock 5.3 LY6 All Aluminum (thread title typo) mated to a TH400 with slip yoke
E2000 fuel pump with corvette filter/regulator
2 speed single efan
Modern Interior
Mechanical Gauges
Painless Harness for the lights and cab stuff
No out sourced powertrain wiring, harness and fuse/relay panel for the engine all done by me.
Also i like to do my own tuning,But i get in over my head somtimes haha
I do alot of wild builds, only as a hobbyist
08 silverado chassis chopped and 4x4 deleted
Stock 5.3 LY6 All Aluminum (thread title typo) mated to a TH400 with slip yoke
E2000 fuel pump with corvette filter/regulator
2 speed single efan
Modern Interior
Mechanical Gauges
Painless Harness for the lights and cab stuff
No out sourced powertrain wiring, harness and fuse/relay panel for the engine all done by me.
Also i like to do my own tuning,But i get in over my head somtimes haha
I do alot of wild builds, only as a hobbyist
Last edited by CaptianChaos; Jan 4, 2017 at 09:35 AM.
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From: YUKON
Heres another one i'm building, this ones a keeper for me!
2002 Ram 2500 5.9 diesel 5spd with a 2001 GMT800 body graphed onto the dodge chassis, its been a bit of a challenge, but with the right amount of Can Do and Know How anything can be done!
Lol
2002 Ram 2500 5.9 diesel 5spd with a 2001 GMT800 body graphed onto the dodge chassis, its been a bit of a challenge, but with the right amount of Can Do and Know How anything can be done!
Lol
Cool projects.
I've had a similar problem on an E38 based truck swap several years ago. I fubared something in Torque management and it would kill the pedal at seemingly random / awkward times.
In looking at your calibrations, I noticed you had some torque management settings changed from factory on your final tune. I would move these all back to factory as a test. I also noticed you have "Oil Starvation" set to "Enabled" in the final. This may be your problem as it is disabled in the original calibration. I'm not sure the logic that puts the PCM in this mode, but I thought that was something I changed and had problems with.
If that works and you feel the need to keep them disabled, try one at a time to see which one causes you grief. If you aren't using a PCM controlled transmission or BCM and anti-lock brakes, the torque management doesn't have the same impact. It still works, but it's only an engine limiter and not a transmission / driveline limiter as well.
I've had a similar problem on an E38 based truck swap several years ago. I fubared something in Torque management and it would kill the pedal at seemingly random / awkward times.
In looking at your calibrations, I noticed you had some torque management settings changed from factory on your final tune. I would move these all back to factory as a test. I also noticed you have "Oil Starvation" set to "Enabled" in the final. This may be your problem as it is disabled in the original calibration. I'm not sure the logic that puts the PCM in this mode, but I thought that was something I changed and had problems with.
If that works and you feel the need to keep them disabled, try one at a time to see which one causes you grief. If you aren't using a PCM controlled transmission or BCM and anti-lock brakes, the torque management doesn't have the same impact. It still works, but it's only an engine limiter and not a transmission / driveline limiter as well.
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From: YUKON
My Bad that was my latest reversion! i changed stuff in Torque management and added all APP PID's to Fail on first error just in case their was an error not being reported, not yet tested.
this is the Tune that Go's along with the Scanner log,
55 base2.hpt
btw thanks much for your time!
this is the Tune that Go's along with the Scanner log,
55 base2.hpt
btw thanks much for your time!