Transmission jolt problem ? Gear 1-2 "Is like i get hit from the rear! 03 X5 4.6 is"

[fmugur]

Originally Posted by bosanci28

Ok, I am here with the car at the wife's work place, and put my obd2 reader and at the transmission side I am getting this code at pending:
P0721
Output speed sensor circuit range performance.

Did not do any resource on this code, whats about,
As I have to drive it back home.


Thank you,

You might be lucky just replacing the output sensor. Read this:

P0721 Output Speed Sensor Circuit Malfunction - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums

[Doru]

Originally Posted by fmugur

You might be lucky just replacing the output sensor. Read this:

P0721 Output Speed Sensor Circuit Malfunction - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums

This reminds me of a few posts on some other BMW forums, where the insulation of the wires around the plastic connector that hooks up to different sensors got frayed, giving all kind of codes. One guy actually examined the wires around the connectors and noticed that the insulation will split and degrade just like the plastic cooling parts.

I just thought to throw this out there maybe this will help some people who read this post and have some "bad sensors issues".

[RRPhil]

The P0721 code is very common on the 5HP24. It doesn’t mean there’s anything wrong with the speed sensor, just that it has detected an output shaft speed that the controller wasn’t expecting to see. In other words, a clutch is slipping.

Phil

[bosanci28]

Originally Posted by RRPhil

The P0721 code is very common on the 5HP24. It doesn’t mean there’s anything wrong with the speed sensor, just that it has detected an output shaft speed that the controller wasn’t expecting to see. In other words, a clutch is slipping.

Phil

hmm,from my reading it could be the speedy sensor or other internal parts ,clutches ,etc... hopefully is only that sensor! Not too much money on hand right now to rebuild the tranny ,or get a new one .

thank you,for your advice!

[bosanci28]

Originally Posted by Doru

This reminds me of a few posts on some other BMW forums, where the insulation of the wires around the plastic connector that hooks up to different sensors got frayed, giving all kind of codes. One guy actually examined the wires around the connectors and noticed that the insulation will split and degrade just like the plastic cooling parts.

I just thought to throw this out there maybe this will help some people who read this post and have some "bad sensors issues".

yes, i was reading that somewhere!,thanks for pointing that out!

[fmugur]

It looks like this guy wasn't so lucky.
http://www.justanswer.com/transmissi...ed-sensor.html

[bosanci28]

okay,got home ,
and hook up my scanner again,and that code is nowhere to be found...
it run away..i guess.


called the dealer ,and said $60 /order 2 days for that output speed sensor,oem part: 24341421193 and i think cross reference is : 24341218551 from here:

RealOEM.com * BMW E53 X5 4.6is A5S440Z MOUNTING PARTS CONTROL UNIT,
nr#6. (pulse generator ),
and of course is inside the tranny!,

so now i have few things to order,and was hopping that i can get them locally !,but the oil i think only online can get it.

so i must get :

-tranny oil (zf lifegurad 5)

-tranny filter kit (here)

-output speed sensor (here)-or will get it directly from the dealer.


and i guess after will have to do a coolant radiator replace also.

thank you,

[bosanci28]

yes, my tranny at 75k and doing this ,very disappointing !

this is my 3rd x5,i mean all my wife,she drives them! i do have a truck,but i love the power in the 4.6, i still have to buy some stuff first ,like tranny oil,filter,and that sensor if that maybe the problem,but who knows,that will happen next week ,as will go for few days out.

hopefully will fix if not may have to go deeper in the tranny.



@smwmustang,

have you done anything with yours?

thanks

[smwmustang]

Not yet, I parked it for a while and then started driving it again and nothing happened for a few more weeks. Finally figured out that if I drive it like a grandma it does not slip. I only have to drive a few miles a day and have not taken it to the indy yet.

If I turn slow and don't try to gun it in the turn it drives fine and i can go days without ever having an issue. It is only when I don't let it shift all the way into gear that it messes up. Sure seems more like the clutch plate or convertor to me but the convertor was changed when the tranny was as well.

My mustangs sure are easier to work on!

SHawn

[fmugur]

Originally Posted by smwmustang

Not yet, I parked it for a while and then started driving it again and nothing happened for a few more weeks. Finally figured out that if I drive it like a grandma it does not slip. I only have to drive a few miles a day and have not taken it to the indy yet.

If I turn slow and don't try to gun it in the turn it drives fine and i can go days without ever having an issue. It is only when I don't let it shift all the way into gear that it messes up. Sure seems more like the clutch plate or convertor to me but the convertor was changed when the tranny was as well.

My mustangs sure are easier to work on!

SHawn

If you drive like a grandma your transmission doesn't heat up much. I would check/monitor the transmission temperature (INPA) and mark the point where you get the symptoms. If this point is above the engine temperature or somewhere above 200/220F then I would recommend to look into replacing the main radiator and flush the coolant side of the heat exchanger.