Question about 1999 Mercury Cougar

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Timing belt Heard small engine noise, car stopped like it ran ot of gas. Is this the timing belt? If so is the motor a zero tolerance motor or are the valves shot to and need a new motor

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As per the Consumer Guide, the engine 2.5 and 3.0l engines were biult with the timing marks for the cam shafts were in the wrong place and if repalcement timing chains are installed using the marks, engine damage will result.

take to the dealeer, there is a reacll on this, they will repace the gears and chain.

Posted on Jul 07, 2009

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Not to worry. if timing belt broke your engine is fine. it is an overhead cam engine. although there is a good chance depending on your motor size. that one of the composite sprockets the belt runs on broke also. it is common.

Posted on Jun 26, 2009

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IT is a zero tolerance engine which means that if you break a timing belt there will be valve damage. Check the harmonic balancer and if there is a rubber insert between the pulley and the crank shaft hub then replace the harmonic balancer as this rubber has failed and the pulley will fall off. If the key has sheared as you suspect there would be no engine noise as the engine would not be running. Fix the balancer first then check for the noise as it may be just the balancer

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1 Answer

Thinking about buying a 2002 Galant but it needs a timing belt its a 4cyl.just need to know if it is a zero tolerance motor. to see if it may have bent valves.thank you!

remode all plugs and turn the motor over by hand
that will tell you if it a zero tol motor
remember to insert 1 plug at a time to see is the piston has compression and make sure if you fine a bad cyl to spin the cam a couple of degres to make sure it is just open valves and not bent or broken valves

if for some reason with plugs all out and motor will not turn then it is a zero tol motor and will likely need a head job with the timing belt

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Timing Belt broke while driving my 96 Toyota Rav4, 2 wheel drive. Mechanic said that Rav has a zero tolerance engine and engine will need to be replaced. The timing belt has 55,000 miles on it and we were...

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