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My 2001 tundra with 72k on it broke the timing belt while starting it the other day. it is at the dealer now so they can determine how bad it is. I thought I was safe where they recomend 6 years or 90k
timing belt broke
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662 Posts
did the teeth come off of the belt or was it broken in half?
was it contaminated?
old and/or contaminated belts will drop teeth. a belt that is
truely broken may indicate something stopped turning. like a
camshaft. were there any odd sounds in the days before?
seems early for a failure. hummmm yspert
was it contaminated?
old and/or contaminated belts will drop teeth. a belt that is
truely broken may indicate something stopped turning. like a
camshaft. were there any odd sounds in the days before?
seems early for a failure. hummmm yspert
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922 Posts
There have been plenty of V-8's with belts. Belts are quieter than chains and chains are only somewhat more durable (e.g. you might get 150K out of chain and you typically get 90K+ out of a belt). Most late model OHC V-8's will use belts. The most notable exception would be the Ford family of modular V-8's.
Nothing wrong with belts...they typically work great! In fact, you can convert most domestic motors (e.g. SB/BB Chevy, SB Ford...) to belt drive behind a sealed cover.
Its really hard for me to decide when to change my belt, I have 35k but its 5 years old, it could take me another 6 years to hit 70k, so the dilemma change it on time or wait till 90k, or something in between a compromise, raise years by a third and drop mileage by a third, that would be 60k or 8 years.
I probably wont go past 7 years. the degrading part of these belts is probably more due to rubber drying out, and heat of the engine, extreme duty towing even with low miles will probably ruin the belt in 5 years even when the mileage hasn't elapsed.
I probably wont go past 7 years. the degrading part of these belts is probably more due to rubber drying out, and heat of the engine, extreme duty towing even with low miles will probably ruin the belt in 5 years even when the mileage hasn't elapsed.
I think you corrected that statement to 190k miles on the original belt.
Driving 190k highway miles in 2 years would be less strain on a belt than 10 years on a belt with 50k miles of short trips and cold starts.
The rubber dries out. The belt gets jerked from a dead stop every cold start with thick, goopy oil on the cam bearings.
Stop and start city driving causes more strain on a timing belt, too.
I have no problem at all believing that a guy with a courier business got 190k out of the original belt.
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What does it typically cost to have the dealer replace the belt? Is it doable by the average shade tree mechanic?
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74 Posts
Thanks, I'll just search from now on.
When I had my belt changed at 89K or so, I also had the water pump changed and various pullies. Bill from the dealer was right around $1K. In around a year or so I'll be changing again. (I'm at around 140K).
When they did the work they told me the water pump was showing signs of leakage so it was a good thing to change as a routine part of the timing belt change.
When they did the work they told me the water pump was showing signs of leakage so it was a good thing to change as a routine part of the timing belt change.
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34 Posts
Well the bad news is 4,200 to fix. the belt did not break it lost a few teeth. all the intake valves where bent. so the dealer has had it for 2 weeks and it will be done maybe in another week.
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