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aparish · Aug 10th, 2012, 16:40

The magneti marelli throttle bodies are known to fail, due to the contacts on position sensors wearing through. Volvo then released an improved (but not totally fixed) version with better software (the yellow label version 8644347). the software could also be downloaded to the original white label version 8644346. The improved version includes a diagnostic "ETM sweep" function available through dice, which should confirm if the sensors are shot or failing. The advantage of having your old tb refurbed, is that the old ETM inside already matches the car (ECU etc), a xemodex unit comes preprogrammed for your VIN, so does not require reprogramming. dont know if BBA do any reprogramming. If you have an original white label TB that was never software upgraded, it might be a good idea anyway . It is possible to buy a replacement sensor like the one xemodex use and repair it yourself, but is requires some work. Buying a new volvo ETM will definitely require programming for your vehicle and will 2x - 4x the cost of the other options. fitting a used TB will also almost certainly require reprogramming, as I've been told the software versions must match in the ETM, ECU and TCM (transmission). Lastly I gather its usually best to replace the MAF sensor at the same time, as these can fail also and are relatively inexpensive. I have been through this process with an S60 and it was a steep learning curve and information from dealers and independants is typically incomplete and conflicting. I had one independent volvo service guy tell me a used TB couldnt possibly work (110% sure he said), he wanted $1100 for a new volvo part. So guess what, after reprogramming at another volvo indie, the used one worked just fine. no codes, no problems.

Aug 10th, 2012, 16:40	#13
aparish New Member Last Online: Aug 10th, 2012 16:46 Join Date: Aug 2012 Location: rancho santa margarita	volvo ETM 1998-2001 s60 s70 s80 s90 The magneti marelli throttle bodies are known to fail, due to the contacts on position sensors wearing through. Volvo then released an improved (but not totally fixed) version with better software (the yellow label version 8644347). the software could also be downloaded to the original white label version 8644346. The improved version includes a diagnostic "ETM sweep" function available through dice, which should confirm if the sensors are shot or failing. The advantage of having your old tb refurbed, is that the old ETM inside already matches the car (ECU etc), a xemodex unit comes preprogrammed for your VIN, so does not require reprogramming. dont know if BBA do any reprogramming. If you have an original white label TB that was never software upgraded, it might be a good idea anyway . It is possible to buy a replacement sensor like the one xemodex use and repair it yourself, but is requires some work. Buying a new volvo ETM will definitely require programming for your vehicle and will 2x - 4x the cost of the other options. fitting a used TB will also almost certainly require reprogramming, as I've been told the software versions must match in the ETM, ECU and TCM (transmission). Lastly I gather its usually best to replace the MAF sensor at the same time, as these can fail also and are relatively inexpensive. I have been through this process with an S60 and it was a steep learning curve and information from dealers and independants is typically incomplete and conflicting. I had one independent volvo service guy tell me a used TB couldnt possibly work (110% sure he said), he wanted $1100 for a new volvo part. So guess what, after reprogramming at another volvo indie, the used one worked just fine. no codes, no problems.