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- bgrandjacques
June 30, 2006, 8:54 am
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change it again at 130,000 miles. Unfortunately the tensioner failed at
125,000 miles. The engine is shot.
Only 2 cylinders are still good. Why cannot Volvo design cars where the
engine survives in case of timing belt failure? I understand that other
manufacturers can do it.
This was my fifth Volvo -- I always had 240's since 1971 and could go
to 200,000 or 250,000 miles on each one. I am sorry to see that the
S70 is not such a strong design. I had the following problems:
1. calipers on front left. $600
2. calipers on front right. $600
3. power steering $1,200
4. bad ABS board $600
5. leaking air conditioning heat exchanger $ 1,200
This last problem is the end. I cannot afford to repair the car.
Good bye Volvo.
Re: Timing belt tensioner failure S70 T5 1998
8-valve does have a non-interference engine, and would be fine if the
timing belt failed. My only guess is that performance has taken
priority to these type things.
Buy a newer Honda, Toyota, Nissan, VW -- and pick up an old Volvo to
tinker with on the side.
G'Luck!
bgrandjacques@pacco-intl.com wrote:
Re: Timing belt tensioner failure S70 T5 1998
Exactly, it was the tensioner that gave way not the belt. But itīs right
that a chain is muck more strong.
You never see broken belts on the 23 mm wide cam belts on 850 / S-V70
models, it lasts 8 years or I believe 96000 miles.
The problem in this case is most likely that the tensioner needs to be
visually serviced from time to time and changed if looking bad.
Furthermore you need to adjust / check the tension on it. Dont know if it
was adjusted properly when he changed the belt at 60.000 miles.
Niels
Re: Timing belt tensioner failure S70 T5 1998
has a 1998 S70 T5 but was miraculously saved from the exact same disaster.
One night, I was driving home, and the engine was making an odd sound. I
had no clue it was the timing belt coming off its path. I was able to make
it home w/o incident, and when I popped the hood, I could see that the
belt had burned its way through 75% of the cover of the timing belt
compartment.
After great advice from this group that night, I rented a car for the rest
of the week and had the car towed to my mechanic the following weekend.
The tensioner had fallen apart and lost all its bearings. At this point, I
would recommend that all mechanics replace the tensioner when replacing
the belt. The extra cost is worth it!
Mike
Re: Timing belt tensioner failure S70 T5 1998
Sadly, it is a common tale. I have known two people (one a family friend)
whose Ford Escorts didn't survive until they were paid off because the water
pumps seized. I forget which engine they used, but the damage was extensive.
Our family friend had a neighbor (now her husband) take a look - there were
chunks of valve seat embedded in the pistons.
Mike
Re: Timing belt tensioner failure S70 T5 1998
It seems clear that driving the water pump from the timing belt is a
very poor design. Much better to drive the water pump from the
accessory belt like the alternator, p/s pump, etc. . That way a failed
water pump is unlikely to grenade the engine.
I wonder what genius engineers made the decision to put the water pump
on the timing belt ????
John
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