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

my 2001 x5 4.4 will start then dies everytime, throwing these codes:

P0120 = Throttle/Pedal Position Sensor/Switch "A" Circuit
P0121 = Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance
P0123 =Throttle/Pedal Position Sensor/Switch 'A' Circuit High
P0223 = Throttle/Pedal Position Sensor/Switch 'B' Circuit High


I replaced the pedal assembly and throttle body with new equipment, I also replaced the DME with one from ecudoctors.com ......same thing!! .HELP!!!

[email protected]
919-417-4448

someone please text me or email me!

There was a throttle calibration reset somewhere by Killcrap. Something like you putting in the key, and flooring the car without starting, holding it there for a while, then i don't remember.

Have you checked for air leaks.

Here's one of the versions ....http://www.xoutpost.com/articles/x5/...-ms43-edk.html

I tried this throttle adaptation multiple times.......no success?
 

no success. The car will start and shut off, if I try to use the throttle theres no response. And Im assuming thats what those throttle pedal codes mean too. Im stumped :(

WHEN i TURN THE KEY FORWARD I DO HEAR the throttle flap open and close once but thats it.

my truck is a 2001 4.4
 

maybe theres a different process for the v8?

Yes, try flooring it while it opens the throttle, then start the car with foot still on throttle.

to set adaptations? is that what you mean? because flooring it does nothing since the throttle doesnt work at all

I am really not sure what else to suggest. Can you connect to gt1/dis? Something other than a regular scanner.

Im going to look at it with carsoft today. wondering if theres a loose wire, harnesses look good.

Could be a dirty throttle plate. See this video in it entirety.

https://www.youtube.com/watch?v=4C075DS2Ud4

The throttle is brand new vdo, clean as can be?

if theres an adaption I need it for a E53 M62TU (aka....x5 4.4 liter)

that E53 /E54 on is different

I don't think there is an Adpatation procedure for the EDK. The adaptation is automatic.

Here's what I found about ther M62 TU engine and the EDK.

The EDK is continuously monitored during all phases of engine operation. It is also
briefly activated when KL 15 is initially switched on as a “pre-flight check” to verify it’s
mechanical integrity (no binding, appropriate return spring tension) by monitoring the
motor control amperage and the reaction speed of the EDK feedback potentiometers.
If faults are detected the EDK motor is switched off and fuel injection cut off is activated
(no failsafe operation possible). The engine does however continue to run extremely
rough at idle speed.

Since you have fault codes if the fuel injection cut off is activated that may be the reason why the engine dies. If you clear the fault codes and start the engine, the EDK maybe able to adapt to the new throttle pedal you installed.

Why did you replace so many parts in the first place? Also a new DME requires adaptation to the flywheel.
Here's the complete write up on the M62TU

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

your right ....
 

upallnight,

this is EXACTLY where Im at, it senses a fault of "voltage too high" and cuts the fuel hense the start and stop. Problem is I cant clear the codes, the 3 pedal codes remain and it continues to do this. I can unplug the pedal and it runs in 'engine failsafe' which is rich, choppy and smilar to bad maf mode (since it runs in default limp mode)

not sure what to do :(

upallnight,

also at KL15 (igniton switched to pos. 2) I hear the throttle flap open and shut quickly, so it is talking to it. But thats it!

I see the adaption process. But I cant clear my codes to start this process.


"

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 activated
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."

Did you change the TPS at the throttle plate?

I would also check the connector to the DME to see if there is any corrosion and connectors at the TPS in the throttle plate and the pedal. High voltage would indicate that one of the potentiometer is not registering the correct ohm.

Yes entirely new throttle body.

Since later cars have EWS security coded keys, when you replaced DME did you align the new DME with the EWS?

Yes I performed the alignment between the dme and the EWS as soon as I put the new DM E and it's not that . The car starts and shuts off so it's getting electrical signal the security systems fine

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?

Found some more info.
 

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

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

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.

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.

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.

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

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.

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."

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

This would only apply to a new DME. Yours is not new.

no difference. Im stumped :(

@SlickGT1 Blakey 2000 swap out a new or rebuilt DME.

@Blakey2000 Do you still have the old DME?

Have you tried reinstalling some of the old parts?

according to his first post,

I also replaced the DME with one from ecudoctors.com

so.... not sure if it would have cleared adaptations.

Blakey, what software do you have to work on the car. If you do not have GT1/DIS, we are all pissing in the wind.

@SlickGT1, Blakey2000 is running carsoft 6.5

I am not familiar with carsoft 6.5. Is it as useful as DIS?

I don't know I used Carsoft 6.5 when I had my E34 because it had the BMW proprietary round socket, but since they now use a regular OBD II socket in the E53, I have gone over to an APP for my Android phone and tablet. I use the free app Torque on my phone and the paid App Torque Pro on my Tablet.

I am not familiar with DIS or GT1.

DIS is what the dealers have and use to work on BWM. Very nice piece of software.

I guess I need to get one of those Romanian cable and a copy of DIS, or maybe I just go and change the point on my Lotus. Glad I don't need a computer to work on the Lotus or Porsche.

Yea you should get the software. It really isn't that expensive, but will make your life super easy.

Hey guys Im still down . I know a guy with DIS (bmw software) but he wasnt sure if there was a step in the software that Im missing that makes the pedal talk to the throttle. Right now I have the ecudoctors DME, perfect wires and harneses from pedal to DME, DME to throttle body and a new pedal and throttle. Still showing to high of voltage to throttle codes.

Does DIS have a step in it Im missing. I get the initial open/shut on turn of key of the throttle body but no 10 or 30 second initialization process w/ the key seems to do anything.

I still have me old DME but its useless now, I have the new DME synced to my EWS now.

Saw this on the net regard P0123

OBD II Code P0123

Could you have a break in the harness somewhere?

Nope every wire tests out 100% continuity and ohms out at. 3. Which is good

But wouldn't the old DME still be synced to the EWS?

no, ews is now synced to new DME

well I had it towed off to someone else. Over trying to figure it out

Maybe this will help in the future.
This is what has happened. The DME internal circuit 15 is the 5 volt supply for some sensors. It is the supply for the throttle actuator. This voltage is now battery voltage causing the codes for high voltage as it returns to the DME over the max of 5 volts. Have seen this on a few 4.4l w/ DME 7.2's.

Looks like George goofed on this DME repair or something is shorting this circuit.

Thats what im hoping. George just sent out another dme. I hope it works!

What have u seen cause the short?

Never found one with an external short of the dme. Just saying it is possible since you already swapped your dme once and still have problems. Something could be frying them.

WELL its fixed, cost me 2600$ to figure it out but to save aeveryone trouble, replace the computer (DME) first then if that doesnt fix it its the MAF as well. That combination worked for me. If you do that itll only cost you 1000$

you were right it was a bad MAF shorting the ECU. replaced both and it runs

So did the bad MAF damage the first rebuilt DME from ECUDOCTORS? How did you determine that the MAF was shorting the DME.

unfortunately, i think you were misinformed.

This is what happened...

The o2 sensor caused the short. The heater circuit internally shorted to the 5 volt reference causing battery voltage to all other circuits on 15.

battery voltage to maf, throttle body and the dme killed them, along with the cam sensor.

No the DME from ECU doctors was programmed wrong I got 1 from rpm and it worked with the new MAF

Hey asecertified.....
.did you do the work on my truck?

Yes, Im the one.

Ahhhhhhh. Why didnt you tell me. I never got a chance to talk with you. The way i heard was the cam sebsor and o2 may or may not have been the cure. Either way after alot of work and research you figured it out. Im glad to be driving again!

needed all of the info i could obtain. if i told you right away, i might not have found out some much needed info. PM me and ill give you my # and we can talk about it some time this week.

Hello everybody I am new on this forum and I just bought a 2001 x5 4.4i 107000 miles 3 weeks ago and I am going nuts having a similar problem. I have 2 codes P0120 & P0221, I went ahead and replace the gas pedal and no luck , the mechanic tried replacing the TB today and nothing! he is trying tomorrow replacing the MAF. Any ideas?

I thought that code was catalytic?