traction control advise

Jacspeed · 21st March 2023, 12:38

Hello everyone
Jacspeed from Rome
I'm a MG ZT enthusiast, in addition to sedanI also bought thr ZT-T.
The Tourer has a problem, when the speed of 80 Km/h is reached, on dashboard appears " traction control " (in italian: contr. trazione). In this moment, loses power. However then the message disappears and then repeats itself later always on similar speed.
Can Your experience, help me?
Many Thanks

vitesse · 21st March 2023, 13:45

Very strange, does your car have traction control?

The only way I can see this happening is if your car does have traction control and for some reason the secondary throttle is closing then that would produce a lack of power.

Why it should happen at that speed I have no idea, if it were my car I'd disconnect the traction control activator and see if the problem goes away.

Regards

Jacspeed · 21st March 2023, 15:02

Thank you for reply.
I don't know if my ZT-T CDI has traction control or not, but that's what appears on the display...

Jacspeed · 21st March 2023, 15:14

This is pic of display :
https://i.postimg.cc/N0hfMQMP/Display-MG-ZT.png

vitesse · 21st March 2023, 15:49

Certainly looks like the warning on the display - you need to get those lines fixed.

OK open the bonnet, follow the AC pipes going backwards towards the back engine wall. On the wall will be one of these mounted (https://www.ebay.co.uk/itm/295150395...Bk9SR7DW9NDgYQ) with a plastic cable running to the throttle housing. Do you have one?

Regards

ps. Ignore the BMW description, the motors are the same

Jacspeed · 21st March 2023, 16:15

Many Thanks, very useful to know, I take look considering that I have the guide from the opposite side

Regards

SD1too · 21st March 2023, 16:37

Hi Jacocagni,

This is an interesting thread so I've been reading about traction control in RAVE.

The secondary throttle actuator which Mike (vitesse) has mentioned is fitted to the KV6 engine which he and I both have. Your ZT-T won't have it. The diesel adjusts the fuelling to reduce engine torque. I don't know but I suspect that the ECM (Engine Control Module) achieves this.

The diesel ECM is susceptible to water ingress so the first thing to check is that it isn't sitting in standing water in the plenum due to the drain tube being blocked with organic matter.

Simon

vitesse · 21st March 2023, 17:06

Whoops - why do I think everyone has a V6? Perhaps because diesels are almost non-existent here, it's either a V6 or a 1.8T. Must learn to check.

Mike

Jacspeed · 21st March 2023, 18:25

yes Simon, I know the problem of the ECM in an unfortunate place. There is always humidity in place. She may have been wet during her lifetime. I freed the dirt and opened the water drain, but if I found a used ECM from a ZT CDT, could I simply replace it?
Many Thanks
Marco

trikey · 21st March 2023, 18:59

Hi Marco, you cannot just swap the ecu, if you think it's a problem drop me a message I can supply a new one that will be plug and play for you

Sent from my SM-G780G using Tapatalk

21st March 2023, 12:38	#1
Jacspeed Newbie MG ZT Saloon Join Date: Sep 2016 Location: Roma Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	traction control advise Hello everyone Jacspeed from Rome I'm a MG ZT enthusiast, in addition to sedanI also bought thr ZT-T. The Tourer has a problem, when the speed of 80 Km/h is reached, on dashboard appears " traction control " (in italian: contr. trazione). In this moment, loses power. However then the message disappears and then repeats itself later always on similar speed. Can Your experience, help me? Many Thanks

21st March 2023, 16:37	#7
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,604 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Hi Jacocagni, This is an interesting thread so I've been reading about traction control in RAVE. The secondary throttle actuator which Mike (vitesse) has mentioned is fitted to the KV6 engine which he and I both have. Your ZT-T won't have it. The diesel adjusts the fuelling to reduce engine torque. I don't know but I suspect that the ECM (Engine Control Module) achieves this. The diesel ECM is susceptible to water ingress so the first thing to check is that it isn't sitting in standing water in the plenum due to the drain tube being blocked with organic matter. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

21st March 2023, 18:59	#10
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,821 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Hi Marco, you cannot just swap the ecu, if you think it's a problem drop me a message I can supply a new one that will be plug and play for you Sent from my SM-G780G using Tapatalk __________________ Lest we forget..

21st March 2023, 13:45	#2
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,575 Thanks: 395 Thanked 823 Times in 652 Posts	Very strange, does your car have traction control? The only way I can see this happening is if your car does have traction control and for some reason the secondary throttle is closing then that would produce a lack of power. Why it should happen at that speed I have no idea, if it were my car I'd disconnect the traction control activator and see if the problem goes away. Regards

21st March 2023, 15:02	#3
Jacspeed Newbie MG ZT Saloon Join Date: Sep 2016 Location: Roma Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	Thank you for reply. I don't know if my ZT-T CDI has traction control or not, but that's what appears on the display...

21st March 2023, 15:14	#4
Jacspeed Newbie MG ZT Saloon Join Date: Sep 2016 Location: Roma Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	This is pic of display : https://i.postimg.cc/N0hfMQMP/Display-MG-ZT.png

21st March 2023, 15:49	#5
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,575 Thanks: 395 Thanked 823 Times in 652 Posts	Certainly looks like the warning on the display - you need to get those lines fixed. OK open the bonnet, follow the AC pipes going backwards towards the back engine wall. On the wall will be one of these mounted (https://www.ebay.co.uk/itm/295150395...Bk9SR7DW9NDgYQ) with a plastic cable running to the throttle housing. Do you have one? Regards ps. Ignore the BMW description, the motors are the same

21st March 2023, 16:15	#6
Jacspeed Newbie MG ZT Saloon Join Date: Sep 2016 Location: Roma Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	Many Thanks, very useful to know, I take look considering that I have the guide from the opposite side Regards

21st March 2023, 17:06	#8
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,575 Thanks: 395 Thanked 823 Times in 652 Posts	Whoops - why do I think everyone has a V6? Perhaps because diesels are almost non-existent here, it's either a V6 or a 1.8T. Must learn to check. Mike

21st March 2023, 18:25	#9
Jacspeed Newbie MG ZT Saloon Join Date: Sep 2016 Location: Roma Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	yes Simon, I know the problem of the ECM in an unfortunate place. There is always humidity in place. She may have been wet during her lifetime. I freed the dirt and opened the water drain, but if I found a used ECM from a ZT CDT, could I simply replace it? Many Thanks Marco