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ETM Issues Discuss issues regarding the problems with ETMs fitted to Volvo cars.

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ETM sensor starting to go ?

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Old May 12th, 2016, 10:33   #1
Pjrebordao
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Default ETM sensor starting to go ?

Hi !

Have a 01' XC70 2.4T with a Magneti-Marelli yellow sticker on the ETM.
After car completely warms up, if sitting in traffic for a while (stop-go), idle starts to fluctuate every now and then. Only happens at idle, driving is fine.

As it seems to become apparent only when warm, I'll put some heat shielding around the sensor to try to mitigate and "delay" the problem. However, haven't got much fate...

Anyway, the question is, when finally going for a replacement, can I just change the sensor or it has to be the whole ETM ?

Thanks
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Old Aug 25th, 2017, 07:47   #2
benja
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Originally Posted by Pjrebordao View Post
Hi !

Have a 01' XC70 2.4T with a Magneti-Marelli yellow sticker on the ETM.
After car completely warms up, if sitting in traffic for a while (stop-go), idle starts to fluctuate every now and then. Only happens at idle, driving is fine.

As it seems to become apparent only when warm, I'll put some heat shielding around the sensor to try to mitigate and "delay" the problem. However, haven't got much fate...

Anyway, the question is, when finally going for a replacement, can I just change the sensor or it has to be the whole ETM ?

Thanks
Hi, could I ask if this is still an issue for you?

Having just purchased a car with a consistant idle hunt (800 - 1200rpm), I am trying to work out if I've bought a moneypit!

Thanks
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Old Aug 25th, 2017, 08:22   #3
Pjrebordao
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While doing other maintenance (replacing camshaft seals), I asked the mechanic to clean the inside of the ETM and... problem gone.
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Old Aug 25th, 2017, 09:52   #4
benja
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Thankyou for your reply

Seems like thats my first step...
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Old Sep 12th, 2017, 17:29   #5
ThomasG
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Originally Posted by benja View Post
Thankyou for your reply

Seems like thats my first step...
And last, judging by your other posts
I`ve been trough same some 2 years ago (2002 V70 2.4/170bhp@256000miles)
I actually bought a replacement TCM.. cleaned the old one and problem gone.. nobody seems to want that spare i have now.. :/
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Old Sep 18th, 2017, 10:57   #6
benja
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And last, judging by your other posts
I`ve been trough same some 2 years ago (2002 V70 2.4/170bhp@256000miles)
I actually bought a replacement TCM.. cleaned the old one and problem gone.. nobody seems to want that spare i have now.. :/

Apologies,

Yes cleaned the ETM and seems to have cleared up the issue. just waiting for it to fail now which cant be long as its at 127K and the original as far as I can tell.
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