Finally a Non-Contacting ETM Solution?

[Gimpster]

Honestly, the volume is too low for Bosch to care. If any of you have ever/do work for an OEM, they think on a different scale. They're also not going to go over Volvos head, who happens to purchase a large amount of parts from. I'm sure most owners with gimpy ETM's are totally un-savvy/clueless to what's going on as well.

This is purely up to Volvo to fix/make right, and the likelyhood of that, IMO, is slim to none.

I've had 2 ETM's replaced (current is in process of dying), my ABS module repaired, my climate control unit die, my heater core leak, two window regulators and lately my CD changer has been on the fritz I'd say I paid my dues! Mechanically my car has been a tank. My only complaint is in the electrical departments.

Besides replacing the ETM again, the new crisis I have to deal with this Summer is re-looming my entire engine harness. I'm not sure about you other S70 owners, but most of the split tube loom has deteriorated on my harness. Just bare wires all over the place, particularly on the ignition coils and fuel injector sub-harness. I noticed this while changing the spark plugs this fall.

Owning this car is like playing golf, you play for that one sweet stroke every game. And I happily keep coming back for more

[VCA]

Owning this car is like playing golf, you play for that one sweet stroke every game. And I happily keep coming back for more

I was going to say it's been a bit like owning an Alfa Romeo: you own it for the moment of sheer bliss that happens when the car is perfect, you kiss the apex of a curve and it's heaven...that moment lasts about 5 minutes before something else breaks ("Check engine light again?! *&%$!") and the thrill goes :poof:

But I love this car, even more than my old 960 (now mom's car); it's just brilliant!

[JRL]

...but most of the split tube loom has deteriorated on my harness. Just bare wires all over the place, particularly on the ignition coils and fuel injector sub-harness. I noticed this while changing the spark plugs this fall.
:

Common, just recover them. They're usually just fine, just need some protection.
You could do this yourself with tape

[Mike-Halewai]

JRL I don't mean this to be absurd, but what kind of tape would you recommend, I assume electrical? Anything different work any better in your opinion?

[MadeInJapan]

Harbor Freight sells plastic looms that are split to fit over wires...you just cut how much you need. I would do like JRL says first...cover them with electrical tape and then use the loom over the taped wires. I'm pretty sure that most auto parts stores sell the plastic corrugated looms as well (I remember seeing them in small and large plastic bags)....really, no big deal here. Just don't pay some place a ton of money to have this done- it's an easy DIY.

[DonWillson]

Don Willson checking in again.

We are all waiting for testimonials from the first person to try the XeMODeX modified ETM. I am trying to set up a trial rig. My son has a 2001 XC70 with over 50,000 miles on it. It has had the ETM replaced once and the software recall installed.

Our only concern is fixing something that ain't broke. Has anyone in this forum tried using an ETM from a salvage car?
If so did it work? On one of the test vehicles Chris (CEO XeMODeX) says that they used an ETM from a similar model and it worked perfectly.

I have several ETMs that are available for rebuild, some have never been touched and some have the end caps removed. If we do find that we can use replacement and not the exact same ETM, this whole job will be much simpler, buy a rebuilt ETM, install it and send the old core back for credit.

If I can get this set up the replacement process will be well documented with pictures, before and after performance data and a report.

So right now the question is, "Does the ETM have to be the one that came out of the car?"

Don Willson
http://VEXEDvolvo.org

[Gimpster]

I cant answer if you can swap ETM's around without issue as I've never tried (been under warranty until now). Hopefully someone will chime in on that.

FWIW, the technician who did the last warranty ETM swap for me said that after the actual mechanical swap, he used the Volvo ECU tool to "recalibrate" the system.

Let's assume he was telling the truth. Not knowing the inner workings of the Volvo ECU's, I can only speculate that the ECU commands full open and full close and sets the voltage range for the TPS? ETM doesnt tie into the CAN bus at all does it? If not, I don't see how it could be "married" to the car. If it's like all the Toyota & GM DBW systems I've looked at FROM THE SAME ERA, the ECU just commands the motor to move and watches the analog TPS (in our case, mylar strip pot) for response.

Let's also assume swapping the ETM between vehicles causes no faults. It would be interesting to use an OBDII logger to compare WOT % / voltages between ETM's.

If only it wasnt the dead of Winter, I'd love to experiment some

[VCA]

I cant answer if you can swap ETM's around without issue as I've never tried (been under warranty until now). Hopefully someone will chime in on that.

FWIW, the technician who did the last warranty ETM swap for me said that after the actual mechanical swap, he used the Volvo ECU tool to "recalibrate" the system.

Let's assume he was telling the truth. Not knowing the inner workings of the Volvo ECU's, I can only speculate that the ECU commands full open and full close and sets the voltage range for the TPS? ETM doesnt tie into the CAN bus at all does it? If not, I don't see how it could be "married" to the car. If it's like all the Toyota & GM DBW systems I've looked at FROM THE SAME ERA, the ECU just commands the motor to move and watches the analog TPS (in our case, mylar strip pot) for response.

Let's also assume swapping the ETM between vehicles causes no faults. It would be interesting to use an OBDII logger to compare WOT % / voltages between ETM's.

If only it wasnt the dead of Winter, I'd love to experiment some

The ETMs are cross-car compatible, provided they have the correct software for the car. (i.e. an ETM loaded with S/V70 software can be installed on another S/V70, but CANNOT be installed in a C70--different software versions). Gimpster, the post-2001 Bosch throttles act like this, but the Marelli ETMs have software and communicate over high-speed CAN with the ECU (i.e. the ECU doesn't normally know what the potentiometer position is on either of the two pots unless you're in diagnostic mode).

[ChrisatXeMODeX]

Because of limited core availability it will be difficult to stock ETMs by their existing software versions. Over the years Volvo has had numerous ETM software upgrades. Each version has its own number, so far we come up with 16 different ones. Classification process will be a nightmare especially when pre-recall numbers are no longer listed.
As per conversation with Don, we will provide him with samples of our non-contacting ETM and the throttle rebuilt service. His findings are to be documented independently from our test results.
I would also like to add that, we will be more than happy to provide additional samples to Volvo enthusiasts outside North America. In countries that are less populated and not effected by the recall.

[MadeInJapan]

New info on this from Don Willson- look here: https://www.matthewsvolvosite.com/forums ... 12&t=18155