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300M timing belt

1462 Views 4 Replies 4 Participants Last post by  Tweety Bird
I have a 2002 300M with 65,000 miles on it. I believe that timing belt is supposed to be replaced in 7 years or 100,000 miles. Almost 10 years old but only 65,000 miles. My wife drives it and likes it. (That makes one of us.) It is an interference engine and failure would probably be very very expensive. I would not hesitate to change the one in my 2.2 turbo but one look at the 300M convinced me that I did not want to attempt it.

How much of a risk am I taking? Any idea what a dealer would charge to do it? I hear that the water pump should be changed when that is done also.

I am trying to convince the wife to get a new car and l am looking at the cost to keep it. ( Also needs a TSB done and possibly an oxygen sensor. Also, the air bag light goes and comes and that will probably be expensive. Those issues dealt with in a separate post.)

Would appreciate any advice.
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I did mine myself and it wasn't as hard a job as it looked like it would be.

But I'm an airline mechanic by training and an airline maintenance instructor by profession, so I don't hesitate to jump into any job (even my co-workers thought I was nuts to rebuild my own TorqueFlite several years ago, but they're cowards ;-) )

If you have good mechanic skills, it can be done in your garage. But if I'd thought I could have had it done by someone else for $600, I wouldn't have thought twice about taking it to the shop.

Your call. But replacing the water pump (and, IIRC, the belt tensioner) is smart because if they fail next month, you'd basically have to do the whole job again.
 
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