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2007 S60 T5 AT - engine mgt A Confusing Set of Symptoms

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vtl
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Re: A Confusing Set of Symptoms

Post by vtl » Fri Feb 28, 2020 6:01 am

Bosch throttle units rarely die. 2007 has Bosch.

Any engine problem that affects torque output, yields to a reduced quality of transmission shifts, since transmission learns how to shift for this and that torque. When you'll get your engine problem fixed the car would shift as it should, most likely (unless other problems uncover).

Is it realistic for you to find someone with DiCE/VIDA, read the codes and paste here? Volvo-native codes are much more precise and informative than OBD-II. Some advanced scanners can read Volvo codes as well, that would work, too.

As an example, some time ago I had BCM (brake module) falling out of CAN network. The problem was in DEM (differential/Haldex module) that was penetrated by water and short-cuting the network, even if DEM's fuse was pulled off. VIDA showed a bunch of codes, one gave me an idea where to start looking.
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Re: A Confusing Set of Symptoms

Post by RickHaleParker » Fri Feb 28, 2020 6:14 pm

mikestr wrote:
Fri Feb 28, 2020 2:07 am
To Rick: That is not a run-on, actually, but rather a complex sentence, i.e., one with a dependent clause.
You wrote it for yourself. I'll keep that in mind next time ans let you answer your own questions.
--------
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Re: A Confusing Set of Symptoms

Post by mikestr » Sat Feb 29, 2020 1:29 am

To Rick, again: Now I see which sentence you meant. No, that is also not a run-on, but if I'd added a second verb after the comma to make a new independent clause it would have been. "The vacuum leak was fixed, the throttle body was cleaned," would technically be a run-on, though I'm sure its fluidity and naturalness it would past muster with any eagle-eyed editor like you. Anyway, the point is that you were right: In effect, the thing wasn't really cleaned.

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Re: A Confusing Set of Symptoms

Post by mikestr » Wed Mar 04, 2020 12:19 am

Rick--I'm not sure what bothered you. I merely pointed out that I did ask to have the ETM cleaned, run-on sentence or not. And I surely appreciate your advice!

To VTI: The only people around here I know who have VIDA/DICE are the dealership. They have already mistakenly replaced the ETM harness and have also tried to sell me other things (such as a new timing belt and pulleys, claiming the seals seals are leaking, without considering how easy it is for me to inspect them myself and see that they are fine; such as a new ECM and TCM--and a whole new car, of course). But yeah, I'm going to get them to give me a printout of the codes--good suggestion. I figure they owe me some time at this point.

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Re: A Confusing Set of Symptoms

Post by precopster » Wed Mar 04, 2020 3:01 am

It seems a new throttle body may be in order to solve this. The position of the throttle and how it interacts with the TCM and ECM when not actually read accurately due to malfunction, is within the programmer's hidden realm of code and not easily answerable.

XeModex (the Volvo programming gurus in Canada) have the new policy of no longer selling the cable for the throttle separately. They sell the Bosch throttle combined with signal cable going back to the ECM to avoid the statistically high (or perhaps low) inevitability of both the throttle and cable malfunctioning together.

As far as the transmission malfunction is concerned it may well be related to throttle errors. You can always replace the fluid with Volvo fluid in a series of drain and fill operations (3 of them is good, 4 is ideal) over a couple of months and report back. Your model year is not a problematic one when it comes to transmissions though fluid is always the weak link as it degrades over time.
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Re: A Confusing Set of Symptoms

Post by mikestr » Thu Mar 05, 2020 1:17 pm

So does your answer change when we consider that this is not the notorious Magneto Marelli unit that gave rise to Xemodex's solution but rather is the Bosch unit? Someone stated above that the Bosch ETM rarely fails though it gets dirty like any other. ...?

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Re: A Confusing Set of Symptoms

Post by mikestr » Thu Mar 05, 2020 3:33 pm

So here's an update. The dealer did a scan, saw the codes (perhaps I'll get a copy), and pulled the ETM to inspect it. They said it wasn't dirty enough to cause this problem. (It's possible that the other mechanic really did clean it to a meaningful degree.) They installed a known good ETM and have asked me to drive around and let them know if the problem recurs. If the answer is "no" I suppose they'll work something out with me on the cost of the ETM. If the answer is "yes," then it wasn't the ETM itself that caused the problem. It's logical enough, yet I find it disappointing that no more scientific set of tests is available or was used. About to pick up the car ...

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Re: A Confusing Set of Symptoms 31216327

Post by abscate » Fri Mar 06, 2020 6:52 am

The Bosch units do fail but you don't need reprogramming and the dealer intervention on that one.

They are also much cheaper than the MM ones, about $450 new, lots of $100 ones used, $28 at Harrys PnP... :D
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Re: 2007 S60 T5 AT - engine mgt A Confusing Set of Symptoms

Post by mikestr » Sun Mar 22, 2020 11:25 am

Thanks, Empty Nester. The Bosch units do apparently fail, at least this one did. I'm about 2000 miles along with the replacement unit and there has been no recurrence of the sputtering/hesitation. Shifting seems normal again, with one exception when negotiating a steep mountain road with a lot of potholes; there was an instance of wonky shifting and a flare. Maybe the trans was still adapting. I'll keep an eye on it. The problem for me wasn't so much the cost of the ETM but the difficulty of accessing that area on the T5. I'm glad the dealer took care of it. Now I have a good ETM and new harness as well. Should be set for a while.

Any opinions on whether it makes sense to get the latest transmission software download?

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Re: 2007 S60 T5 AT - engine mgt A Confusing Set of Symptoms

Post by E Showell » Sun Mar 22, 2020 4:40 pm

Guys -- Let's lay off the grammar/usage/style police. If a poster clearly describes the automotive problem, and a proposed solution is clearly communicated, let's focus on solving the problem. Mike is admittedly a first time poster. Rick has an extremely high percentage of accurate/helpful answers and speaks from some pretty substantial experience. We, as a community, are fortunate to have Rick, Jimmy57, Aussie Mike (Precopster) and several other highly knowledgable posters here. Let's do what we can to encourage them to continue sharing their knowledge and benefitting the community.
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