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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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04 XC70 - Cambelt 'Safe' engine QuestionViews : 1264 Replies : 13Users Viewing This Thread : |
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Jan 13th, 2018, 14:22 | #1 |
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04 XC70 - Cambelt 'Safe' engine Question
Unfortunately today my 04' XC70 went into limp mode while driving at 60/65mph. No warning lights on the dash but a ticking noise coming from the auxiliary belt side of the engine (O/S). My action was to stop, shut off engine wait the AA.
The problem; The auxiliary belt had started to strip, the resulting cord momentarily passed around the inside face of the cambelt, which runs in parallel around the crank pulley, effectively side by side. Causing the cambelt to slip. The car is now at the dealership waiting a prognosis as to wether the valves have crowded the pistons or not. Does anyone know if the engine is a safe engine if a cambelt snaps?? If nobody knows I will update this thread so that others may learn how a simple auxiliary belt could cause catastrophic engine damage. |
Jan 13th, 2018, 14:36 | #2 |
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Hi Paul
What engine have you got, Dave |
Jan 13th, 2018, 14:37 | #3 |
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As far as I'm aware none of the engines offered in the XC70 are 'safe' after a cambelt failure.
It's pretty well known that an aux belt failure can cause the cam belt to fail, hence why they're usually changed along with the cambelt, or at a similar service interval.
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'07 XC70 D5 SE - 213,000mi / '08 Mini Cooper S - 108,000mi / '03 Audi TT 225 -140,000mi Ex: '06 S40 2.0D SE - 178,000mi / '00 Renault Clio 1.2 - 138,000mi |
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Jan 13th, 2018, 14:40 | #4 |
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Nope - the valves will collide with the pistons. If the engine was still running when you pulled over, you may be lucky.
Could the ticking have been the aux belt flailing around? |
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Jan 13th, 2018, 20:22 | #5 |
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Hi Dave, its a D5 engine No.225002
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Jan 13th, 2018, 20:28 | #6 |
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Yes the belt had stripped off a cord and was thrashing around, the engine was ticking as if the valves were open on TDC, the AA guy thought it may of only slipped a few degrees.
It didn't sound catastrophic metal to metal though.... fingers crossed,legs crossed, eye's definitely crossed :/ |
Jan 13th, 2018, 21:28 | #7 |
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Hi Paul,
Good Luck, also if the cambelt is to loose , the engine will have valve train rattle as there will be back lash, so I hope it is just that, but like others have said you may not be so lucky, Dave |
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Jan 21st, 2018, 12:10 | #8 | ||
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Update! The Dealer's diagnosis
Quote:
Quote:
So the bill will be between £2500 and £3000 for the dealer to carry out the repair, and this could rise if the head has any damage. The decision has been made for the XC70 to return home and I will be doing the removal of the head (stage 1) to assess for head damage. Can anyone recommend best place for Genuine parts? |
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Jan 21st, 2018, 20:32 | #9 |
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Time it up yourself and see if it runs first. Never take dealer opinion as fact.
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Jan 21st, 2018, 21:39 | #10 |
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Question not a statement, but assuming that things aren't great, wouldn't a replacement engine be the more economical route?
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Tags |
auxiliary belt, cambelt, safe engine, xc70 |
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