P80 xc70 throttle body

Asunn · Post by **Asunn** » 18 Jun 2024, 17:49

Im so confused, there is so much info about these throttle bodies and the programming of these. Some say that ECU tells ETM what to do, others say that ETM need to be programmed for the ECU. So which is it? The programming bullshit sounds like dealership gibberish to make money.

My question is is there really software loaded into the ETM? It makes no sense, the software should be in the ECU and ECU should make the new ETM work with the software, not the other way around.

I haven't bought a new or used ETM for that reason. Hope someone has a concrete answer.

Also can I use 2001 xc70 ETM from the same engine? My car has 142kw but the 2001 has 147kw, otherwise the same, turbo and petrol.

Post by **scot850** » 18 Jun 2024, 18:56

There is a simple answer. Yes the ETM is programmed. It is controlled by the ECU. The misunderstanding here is that they are NOT programmed to the Vin#. So you can use any LPT ETM in any LPT car from 99-00. Not sure if the C70 had an LPT option, but I know there was a change in 03-04. The ONLY think here is we did not get any manual transmissions here in 99-00 so I don't know about those.

For your car you can use an 99-00 V70XC or AWD option.

Now there is one thing I don't know and that is the engine options for the Euro-Spec cars. Over here the V70Xc only came with the 2.4 litre LPT engine with 190bhp and 4 speed auto trans. Same with the AWD S/V70 with LPT engines and the GLT models in FWD.

The only issue I have had is that of the Non-turbo engines. They changed here in 99 to 00 from a 4 speed auto trans to a 5 speed. I have not tried the ETM swap in a 4 speed to a 5 speed. They may change but I don't know for sure.

Finally the V70R I am not sure if it is the same ETM as the other HPT engines in the T5 models. But again it changed in 00 to a 5 speed auto here.

So in your case, if you have the 2.4 litre LPT motor and automatic trans, then any from a same spec'd car will work.

Last thing. Try to at worst case buy a YELLOW label ETM and not a white label. They are date coded with the year on the label. The newer the better. In 2012 I believe (it may be 2014) Volvo rebuilt units went back to a white label but were fitted with contactless throttle position sensors. Those or Xemodex rebuilt units are the best to have.

Hope that is not too confusing.

Neil.

Asunn · Post by **Asunn** » 18 Jun 2024, 20:45

So basically Im kinda in a dead end here until I find the same year v70xc for parts that is really rare here?And even if I can find it the ETM can give out anytime anyways.

I have searched around and nobody in Estonia does the programming and sending the unit out of the country for programming is not going to happen.

Any more ideas how could I proceed before I scrap the car? I really dont want to do that, love the car when it drives...

Asunn · Post by **Asunn** » 18 Jun 2024, 20:55

Wait I think I misunderstood the first time. I have 5 speed manual LPT version, so I could use the ETM for example from same engine v70 LPT FWD manual car also? The keywords being same engine, LPT and manual?

That would be much easier to find, there's literally a handful of 99-00 v70xc's on the road here.

Sadly xemodex doesnt ship to europe, at least not to Estonia, otherwise I would have fixed the problem long ago...

Post by **abscate** » 19 Jun 2024, 05:24

I’ll be in EU in a couple weeks, maybe I can bring one over?

Post by **scot850** » 19 Jun 2024, 16:27

Remember Assun has a manual trans. I have not tried an auto LPT ETM in a manual car as they almost don't exist here. I have about 5 units for LPT but all from automatic cars.

I believe there are repairers in Europe, especially England that can repair this. It was a problem in a lot of higher end Italian cars of the similar timeframe.

Then there is this:

Neil.

Asunn · Post by **Asunn** » 20 Jun 2024, 00:54

I actually did the contactless sensor swap and after the swap it just stays on rough idle. Before that it did the rough idle after deleting the fault codes for like 5 mins and then "learned" the positions and I could drive fine, but the ETM light came on again soon and the rough idle with it.

So if I did the swap and it didnt work might that mean that the chip inside of the ETM is busted? Last night I pulled the whole unit apart and looked at any anomalies on the magnet and coils but found nothing.

If xemodex does those for manuals it would be a great help if you could bring it to Europe Abscate, but gotta be sure about that it works on my car because its not cheap. I already wrote an email to them asking for a possibility of shipping but haven't had an answer yet.

Post by **scot850** » 20 Jun 2024, 08:32

What other things have you checked for rough running?

Plugs and plug gap?

Coil packs?

Can you borrow a boroscope with a side mirror and check your valves are good, or at least do a compression check?

Have you checked fuel pressure? For your car that should be over 50 psi.

Have you checked for corrosion on the ECU contacts to the connector it sits in?

Neil.

Post by **scot850** » 20 Jun 2024, 10:09

I found a company in the UK that does ETM repairs for Volvo:

https://www.sinspeed.co.uk/volvo-thrott ... -rebuilds/

These 2 companies also claim to repair throttle bodies, but not specifically yours. You may have to ask if they can help.

https://www.vcus.co.uk/throttle-body-test-and-repair

https://www.actronics.co.uk/throttle-body

Neil.

Asunn · Post by **Asunn** » 20 Jun 2024, 13:36

The car started acting up after the purchase when I scanned for fault codes at my friends place and deleted them. There was a code for ETM position sensor faulty signal, after deleting it the rough idle started. Before that the car ran without a fault for 300km.

I managed to fix the rough idle by taking off the negative from the battery, letting it learn the positions so to speak for 5 minutes of rough idle and then it ran smooth again for about 15km. How I circumvented the rough idle coming back is that I had to turn the key out of ignition, let it sit for couple of mins and I then drove for like 300km again.

Then I took it to a workshop to deal with the camshaft wrong position fault code and they deleted the fault codes. (They didn't fix the camshaft fault because everything was as it should be mechanically and said straightup they dont deal with those ETMs)The rough idle started again and as I did the same trick like before I could drive again until deleting fault codes.

The whole time I waited for the Sacer contactless tip to arrive and hoped it would fix the problem. So I found out that the problem might be in the chip of the ETM.

Let me know if with the problems you listed above its possible to drive about a 1000km without a problem and engine was running smooth the whole time. I have pretty limited time at the moment so I would really like to get by with minimal work on the car. If I have more time Id like to pull the engine out anyways and do a deep clean, new wiring etc because the car runs like a dream when it runs.