ETM Happily Ever After

[PixelDust]

May 22nd, 2020.

Hey there, everyone.

My story is that of the Electronic Throttle Module (ETM).

Topic of conversation:
‘01 Silver Mystic Metallic, XC-70 w/201,004 miles.

Purchased in July 2019 for $500 w/191k.

The previous owner bought it new. Maintained well, but he complained of a slipping transmission, though this current transmission was rebuilt at 120k (Aisin 55/50) He provided all the records, and at 190k had the timing job done as well.

He had a brand new XC-60 in the driveway, and a lovely red 850 Turbo Sedan of the late 90's vintage in fantastic shape. This nice fellow needed parking space, and I was the lucky one to respond to his Advertisement first..

I drove it home. I noticed hesitation between 2nd/3rd on medium to heavy acceleration (A flare one might call it.) This I imagine, the slipping trans the previous owner thought he had. I have a Blue Point EECR5, scan tool that is fairly Volvo friendly (scans and clears ABS, SRS, Trans, Ecm, Live Data, OBD2.et. codes were:

P303- Cylinder 3 Misfire
9150- Unknown fault. Scan tool read this, but couldn’t give details.
91F0- Unknown.
There were a few others, but none affecting drivetrain. No transmission codes either. I of course had my introduction to what these unknowns were, the ETM. The ‘10 years extended, or 200k, whichever came first, back in ’06’warranty service on faulty modules.
- I gave her a fresh synthetic oil and filter change (which I’ve since done 4 more times)
- Trans drain and fill with those oil changes. (My strategy here includes Lucas Oil Stop/Slip, and Seafoam TransTune in combination each time). Shifts great, fluid smells and looks New.
- New plugs Iridium Bosch
- Bosch coil packs New
- Power Steering Service
- Both Diff. Services.
- Replaced a dented door with one from a 2001 S80. I posted on that topic. Link to that post:

viewtopic.php?f=9&t=91917




I got around to the PCV system, installed new injectors, and cleaned the ETM (which was/is the Magnetti Marelli/Yellow aftermarket module). But, 91F0 and 9150 remained permanent companions. All along I had the same symptom, the hesitation in acceleration. The codes are for an internal fault. Replacement my only option.

The cost prohibitive nature of buying a remanufactured unit from Xemodex, then Volvo's Vida charge for the software, enabled me to ignore the issue. I was looking at $700-$1,000 in my area to take care of the problem with certainty.

Now, the rumor is/was that if you get an ETM froma vehicle that’s your model/year, odds are in your favor that it won’t require programming. My attention went to the salvage yards. Waiting for my Silver Mystic Metallic Unicorn with a good throttle module, to appear. It did yesterday.

I installed it today. It’s the same Magnetti Marelli unit. The serial numbers were:
8644347 For the salvage unit
8644346 for the faulty unit.

The car started right up after install. No codes, no programming necessary.. Drives great. Feels like a newish car. Lots of power. Has a pop it didn’t have before.

That’s the my story on the XC-70. Very happy about it, and wanted to share.

The attachment Nathan%20D.%20Nicholson%20Relevant%20Resume%20for%20ACTIVE%20(1).docx is no longer available

[darrylrobert]

Do the mod yourself its easy, cant say it did much on my car because the original ETM seemed to be working. The VIDA ETM test gave me a very good score. from memory it was around 1% variation

[abscate]

Do you know anything about the donor car mileage? The MTBF on the MM is about 150k+, so that will give you an indicator

Once you start getting codes, you have about 10,000 miles before hard limp mode, in my limited experience

You beat 5:1 odds getting that donor to bolt in and work without software , well done

[abscate]

Adding on. I searched, but could not find, The discussion on the later MM throttles. After 2005-6 I believe the replacements were more robust, or perhaps I’m making this up.

I have about 120k on my replacement MM Body on my T5

The MM from my 99 NA, now gone , went 200k and is in operation on another car still.

[kallekula]

I was lucky and found a Xemodex at the bone yard

[darrylrobert]

trying to decode what Abscate is saying when your old and have BM=bad memory MTFB=? MM=? NA=naturally aspired OMG .

is there a reference table so i can look up these abbreviations?

[abscate]

trying to decode what Abscate is saying when your old and have BM=bad memory MTFB=? MM=? NA=naturally aspired OMG .

is there a reference table so i can look up these abbreviations?

There is a glossary in the major topics sticky but my apologies for by bad acronym habit

Mtbf,,,mean time between failure, engineer speak for lifetime
MM ,,.a nice candy , or magneti Marelli company ( maker of the early throttle body)

[PixelDust]

Hey, guys. Thanks for the replies.

The donor vehicle's age is unknown. It's a good question, and one I pondered, but had no immediate way of knowing. I'll be going back to that salvage yard this week, so I'll see if I can get the mileage number one way or another.

Though I have most of the repair records on my T-5, no mention of the MM install can be found. So I wonder, was it installed after '05-06? How far did it go on that MM before it started to fail at around 190k....I may be able to get this info from the original owner, then again, I don't want to be a bother.

120k and running on your MM TB, abscate. That gives me a glimmer of hope that I'll get some good use out of my donor find, even if it was well used. I'll let you know what info I can gather. .

What a valuable resource this forum is for DIY Volvo owners. Thanks again!

[abscate]

The date code on your unit says

01W05 which means 2001, week 5 , so it’s about 20 years old. Miles are more important than age