C70: - Engine stopped no obvious reason

Gosh · Oct 17th, 2017, 07:16

My C70 just stopped running, no noises, no smoke, no tainting of oil or water, it has low compression but no indications of any damage to engine internals, timing belt is near new and turning over properly.
Do'es anyone have a clue? I have not heard of a motor losing compression on all cylinders at the same time with no smoke, noise etc.

S60D5-185 · Oct 17th, 2017, 07:37

What year is your car, what engine is in it , is it petrol or diesel, is it manual or automatic?

In addition, if you look further down the forum you will see that it is subdivided into specific models and years.

This is where you will get most help for your particular problem if you post your question in the right section.

There are two that cover the C70 so select the correct one for your year.

DaveNP · Oct 17th, 2017, 08:21

Also what do you mean 'just stopped running'? When did it last run? Did it stop while it was running or did you stop and it will not restart? and if it won't restart what does it do? I can think of one scenario but without knowing the details of the car and what actually happened I could be totally wrong.

Gosh · Oct 19th, 2017, 04:13

Thanks David, It is a 2008 T5 AUTO and it just shut down when doing 120 Kph on a highway and did not restart. Our mechanics cannot find any visible issue except the compression has dropped on all 5 cylinders? Timing belt OK, Cam turning, put camera into cylinders and no visible problem!! THEY HAVE BEEN SCRATCHING THIER HEADS FOR TWO WEEKS NOW!!
Gosh

DaveNP · Oct 19th, 2017, 11:54

Well that counts out the scenario I was thinking of, dying at 120kph (75mph) is an odd one. I'm not familiar with that engine so can't really give any great advice, but I wonder if the low compressions is a side effect of it not running rather than the cause, presumably they have checked for fuel and sparks are getting to the cylinders and at the right times?

Proghound · Oct 19th, 2017, 13:36

Thinking along the lines of, cambelt wasn't fitted or tensioned properly and has jumped a tooth or two, not enough to cause interference but enough to cut compression. There should be positioning marks that would show that up. Any fault codes coming up on the car? (would need scanning with Volvo's VIDA software).

The Thong · Oct 19th, 2017, 19:37

Random thought, is there a fuel cut off switch on it? My Sierra did that, just died suddenly and when the RAC came out, he reset the switch and all was well again.

Fuel pump ok?

The Thong · Oct 19th, 2017, 19:44

Quote:

Originally Posted by Gosh

Thanks David, It is a 2008 T5 AUTO and it just shut down when doing 120 Kph on a highway and did not restart. Our mechanics cannot find any visible issue except the compression has dropped on all 5 cylinders? Timing belt OK, Cam turning, put camera into cylinders and no visible problem!! THEY HAVE BEEN SCRATCHING THIER HEADS FOR TWO WEEKS NOW!!
Gosh

You need to link it up to Vida, it should give you a better picture.

morsing · Oct 23rd, 2017, 20:01

Sounds like your mechanics are in the wrong jobs tbh...

Oct 17th, 2017, 07:16	#1
Gosh Gosh Last Online: Oct 23rd, 2017 09:18 Join Date: Oct 2017 Location: Emu Park	Engine stopped no obvious reason My C70 just stopped running, no noises, no smoke, no tainting of oil or water, it has low compression but no indications of any damage to engine internals, timing belt is near new and turning over properly. Do'es anyone have a clue? I have not heard of a motor losing compression on all cylinders at the same time with no smoke, noise etc.

Oct 17th, 2017, 07:37	#2
S60D5-185 Me ? Surely Not! Last Online: Apr 5th, 2024 16:23 Join Date: Jul 2010 Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.	What year is your car, what engine is in it , is it petrol or diesel, is it manual or automatic? In addition, if you look further down the forum you will see that it is subdivided into specific models and years. This is where you will get most help for your particular problem if you post your question in the right section. There are two that cover the C70 so select the correct one for your year. __________________ “Do the right thing. It will gratify some people and astonish the rest.” – Mark Twain 😊 2007 Volvo XC90 D5 SE Geartronic Last edited by S60D5-185; Oct 17th, 2017 at 07:40.

Oct 17th, 2017, 08:21	#3
DaveNP Non VOC Member Last Online: Yesterday 21:52 Join Date: Jun 2011 Location: Milton Keynes	Also what do you mean 'just stopped running'? When did it last run? Did it stop while it was running or did you stop and it will not restart? and if it won't restart what does it do? I can think of one scenario but without knowing the details of the car and what actually happened I could be totally wrong. __________________ David V70 2.5 10v Torslanda Manual 98 Sreg

Oct 19th, 2017, 11:54	#5
DaveNP Non VOC Member Last Online: Yesterday 21:52 Join Date: Jun 2011 Location: Milton Keynes	Well that counts out the scenario I was thinking of, dying at 120kph (75mph) is an odd one. I'm not familiar with that engine so can't really give any great advice, but I wonder if the low compressions is a side effect of it not running rather than the cause, presumably they have checked for fuel and sparks are getting to the cylinders and at the right times? __________________ David V70 2.5 10v Torslanda Manual 98 Sreg

Oct 19th, 2017, 13:36	#6
Proghound Volvo and Audi owner Last Online: Apr 22nd, 2024 12:33 Join Date: Dec 2012 Location: Leighton Buzzard	Thinking along the lines of, cambelt wasn't fitted or tensioned properly and has jumped a tooth or two, not enough to cause interference but enough to cut compression. There should be positioning marks that would show that up. Any fault codes coming up on the car? (would need scanning with Volvo's VIDA software). __________________ Current: 2012 C70 D3 SE Lux Solstice Geartronic, Caspian Blue. Also: 2002 Audi A2 TDI SE, Crystal Blue Previous: 2008 C70 D5 SE manual, Flint Grey.

Oct 19th, 2017, 04:13	#4
Gosh Gosh Last Online: Oct 23rd, 2017 09:18 Join Date: Oct 2017 Location: Emu Park	Thanks David, It is a 2008 T5 AUTO and it just shut down when doing 120 Kph on a highway and did not restart. Our mechanics cannot find any visible issue except the compression has dropped on all 5 cylinders? Timing belt OK, Cam turning, put camera into cylinders and no visible problem!! THEY HAVE BEEN SCRATCHING THIER HEADS FOR TWO WEEKS NOW!! Gosh

Oct 19th, 2017, 19:37	#7
The Thong VOC Member Last Online: Yesterday 21:38 Join Date: Jun 2012 Location: The Independent Republic of Leamington Spa	Random thought, is there a fuel cut off switch on it? My Sierra did that, just died suddenly and when the RAC came out, he reset the switch and all was well again. Fuel pump ok? __________________ Never underestimate the power of stupid. It’ can’t be reasoned or negotiated with and you’ll never never beat it…. Cut your losses, smile and walk away Currently Volvoless but Thong will be back

Oct 23rd, 2017, 20:01	#9
morsing Premier Member Last Online: Apr 22nd, 2024 07:56 Join Date: Dec 2001 Location: Aylesbury View Photos By: morsing	Sounds like your mechanics are in the wrong jobs tbh... __________________ --- '89 Volvo 240GLT B230E/AW70 '14 Volvo V70 SE D4/M66 FWD '70 Chevrolet Chevelle Malibu '95 Saab 9000 CSE 2.0 Turbo Auto

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