2001 x5 4.4 starts then dies.....HELP!!!!

[upallnight]

I asked this before but never received an answer, what was the reason(s) for replacing all these parts (DME/ECU, pedal, throttle plate, EDK motor unit)?

What was it that you were trying to fix?

[upallnight]

PWG SIGNAL MONITORING & PWG FAILSAFE OPERATION:
• As a redundant safety feature the PWG provides two separate signals from two integral
potentiometers (Pot 1 and Pot 2) representing the driver’s request for throttle activation.
• If the monitored PWG potentiometer signals are not plausible, ME 7.2 will only use the
lower of the two signals as the driver’s pedal request input providing failsafe operation.
Throttle response will be slower and maximum throttle position will be reduced.
• When in PWG failsafe operation, ME 7.2 sets the EDK throttle plate and injection time
to idle (LL) whenever the brake pedal is depressed.

Do your brake lights operate normally? Do they come on when the brake pedal is push or are they on all the time?

• When the system is in PWG failsafe operation, the instrument cluster matrix display will
post “Engine Emergency Program” and PWG specific fault(s) will be stored in memory.

Does your instrument cluster display "Engine Emergency Program". I know most of this stuff is from an E38, but there is very little written on E53 with a M62TU engine. The E38 share the M62TU engine and hopefully most of the engine management controls.

All of the above info can be found at:

http://www.e38.org/m62tu.pdf

[blakey2000]

It starts and shuts down throwing those 3 throttle coded thst dont erase or reset

[upallnight]

O.K. finally found the adaptation procedure but you need to be able to talk with the M.E.7.2 controller in your car.

EDK ADAPTATION PROCEDURE:

When a replacement EDK is installed the adaptation values of the previous EDK
must be cleared from the ME 7.2 control module.

1. From the Service Function Menu of the DIS/MoDiC, clear adaptation values.
2. Switch the ignition OFF for 10 seconds.
3. Switch the ignition ON (KL 15). At approximately 30 seconds the EDK is briefly ctivated
allowing the ME 7.2 to “electrically learn” the new component.

This procedure is also necessary after replacing an ME 7.2 control module. However, the
adaptation values do not require clearing since they have not yet been established.

See page 38 of the previous link.

[blakey2000]

Yep, thats the step and the issues exactly. (great reference BTW) It wont allow a throttle adaption. My gas pedal doesnt work at all. Car starts and stops every time.


what Ive checked:

New working good DME
New throttle Body
New (tried 3) gas pedals
Continuity and ohms below .3 on all wires from pedal to DME
Continuity and ohms below .3 on all wires from DME to Throttle body

I can make the truck run in ENGINE FAILSAFE by unplugging pedal. BUt thats what any BMW will do if you unplug pedal.

[SlickGT1]

Wait start the car without the pedals. Run your software, what do you have anyway for software? Make the car learn the throttle body while car is running, see if you can clear adaptations and stuff. The plug the pedal in.

[pnoyako85]

Contact M=Spec
https://www.facebook.com/MSpecPerformance

[upallnight]

You need to clear the previous adaptation before the M.E. 7.2 can learn the new components. Without clearing the old adaptation it will continue to use the old info.

[blakey2000]

According to that manual I do need to adapt but no clearing is needed (all new components)


"This procedure is also necessary after replacing an ME 7.2 control module. However, the
adaptation values do not require clearing since they have not yet been established."

[blakey2000]

Im going to pull cruise control fuses today to see if it sending any wierd high spike signals to my pedal, just a thought.