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  • 2 weeks later...

With over 100K miles it might not be a bad idea to at least give it a look, if you are hearing a rattle/clatter at startup then goes away after 10/15 seconds thats a good sign its in need of replacement. you can pull the valve cover and with a flashlight look down the drivers side of the chain at the chain guide rail, if its broken or deeply grooved its time to fix, with a long screwdriver you can push against the chain itself on the drivers side to see how much slack it has, it should be fairly snug with only a small amount of deflection, if it has significant slack its time to replace before it causes major problems. Once the chain stretches it will eventually wear through or break the plastic guide rail on the drivers side and then in short time it will rub through the timing cover into the water jacket behind the water pump drowning the engine in coolant, not good :thumbdown: Good luck.

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  • 2 months later...

It depends on what engine you have. FWIW, my '96 Tacoma 3.4l V6 just had it's timing belt pully replaced because of a defective bolt that fastenes it to the driveshaft. The bolt loosened and the wooodruff key wore. So the timing was changing. This was at 130K. The timing belt had been changed at 100K, and looked fine at the time.

I think in the 22R engine the belt lasts much longer.

Cheers! :D

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