Throttle body internal fault?

rickyXC70 · Sep 22nd, 2020, 13:37

My 2001 V70 XC 2.4T sometimes shows a reduced performance message. This quickly clears upon startup and doesn't seem to be causing any issues to the car as yet. Still plenty of punch and no performance issues that I can see.... However, I have scanned the car and it comes up as throttle body internal fault. Upon erasing the message it won't come back for about 2 or 3 weeks.

My question is, what's the best or easiest way to resolve this?

Does a second hand part need to be programmed to the car or is it plug and play?

What would you do?

Any advice would be appreciated.

Cheers

Georgeandkira · Sep 22nd, 2020, 14:05

Your car has the MM design ETM.
In it there is a mylar strip from which the oxide layer has worn -think shedded audio tape.
Replacing your old ETM at a dealership will get you a new, old style ETM.
People go to automotive subassembly rebuild shops for these things. The tech available today is superior. Xemodex is one company on this side of the Atlantic. There are such shops over there.

These ETMs are programmed to the car and are not plug and play.
People tell stories about buying 6 of them at various breakers to find one which works etc but it's all bull if you ask me.

Send yours off for the rebuild and reinstall it.

rickyXC70 · Sep 22nd, 2020, 14:11

Thanks for the reply. Guess a rebuild is in order at some point then. Its not really causing a problem per se but something to definitely keep an eye on.

Cleaning it will have no effect then?

When it's rebuilt, will be be contatless then?

Many thanks

oragex · Sep 22nd, 2020, 15:02

Also look closely at the wires going into the connector

Georgeandkira · Sep 22nd, 2020, 18:11

Ridding an old P2 of the MM ETM is a knee jerk reaction.

Your symptom might be caused by a dirty throttle plate. Absolutely go ahead and clean it. You've nothing to lose.

One common (not universal) symptom of the worn ETM is abrupt rpm fluctuations aka hunting.

Many people report cleaning their ETM without improvement, only to have it successfully rebuilt. It would be great if your ETM cleaned up and restored performance.

The blurb I read said the Xemodex rebuilds are contactless. Make sure to ask that of any rebuilder you use.

And as said above, do check your wiring. Also check any vacuum hoses for looseness and splits. Your car is 20.

Sep 22nd, 2020, 13:37	#1
rickyXC70 New Member Last Online: Oct 30th, 2020 00:15 Join Date: Sep 2020 Location: Brynmawr	Throttle body internal fault? My 2001 V70 XC 2.4T sometimes shows a reduced performance message. This quickly clears upon startup and doesn't seem to be causing any issues to the car as yet. Still plenty of punch and no performance issues that I can see.... However, I have scanned the car and it comes up as throttle body internal fault. Upon erasing the message it won't come back for about 2 or 3 weeks. My question is, what's the best or easiest way to resolve this? Does a second hand part need to be programmed to the car or is it plug and play? What would you do? Any advice would be appreciated. Cheers

Sep 22nd, 2020, 15:02	#4
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	Also look closely at the wires going into the connector __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Sep 22nd, 2020, 14:05	#2
Georgeandkira Premier Member Last Online: Yesterday 12:26 Join Date: Feb 2009 Location: Hackensack	Your car has the MM design ETM. In it there is a mylar strip from which the oxide layer has worn -think shedded audio tape. Replacing your old ETM at a dealership will get you a new, old style ETM. People go to automotive subassembly rebuild shops for these things. The tech available today is superior. Xemodex is one company on this side of the Atlantic. There are such shops over there. These ETMs are programmed to the car and are not plug and play. People tell stories about buying 6 of them at various breakers to find one which works etc but it's all bull if you ask me. Send yours off for the rebuild and reinstall it.

Sep 22nd, 2020, 14:11	#3
rickyXC70 New Member Last Online: Oct 30th, 2020 00:15 Join Date: Sep 2020 Location: Brynmawr	Thanks for the reply. Guess a rebuild is in order at some point then. Its not really causing a problem per se but something to definitely keep an eye on. Cleaning it will have no effect then? When it's rebuilt, will be be contatless then? Many thanks

Sep 22nd, 2020, 18:11	#5
Georgeandkira Premier Member Last Online: Yesterday 12:26 Join Date: Feb 2009 Location: Hackensack	Ridding an old P2 of the MM ETM is a knee jerk reaction. Your symptom might be caused by a dirty throttle plate. Absolutely go ahead and clean it. You've nothing to lose. One common (not universal) symptom of the worn ETM is abrupt rpm fluctuations aka hunting. Many people report cleaning their ETM without improvement, only to have it successfully rebuilt. It would be great if your ETM cleaned up and restored performance. The blurb I read said the Xemodex rebuilds are contactless. Make sure to ask that of any rebuilder you use. And as said above, do check your wiring. Also check any vacuum hoses for looseness and splits. Your car is 20.

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