Got a problem..NEED HELP..and yes i already checked the fAQ

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I have a 94 cruiser..it has run great for me i have owned it for a year and a half. When i bought it the previous owner told me that it had lots of service and offered the number and contact for a life long mechanic that has done the service on the truck over its life..that was supposed to include a waterpump and timing chain at around 150k..the truck now has 196k. I consider myself a mid level in skills for working on cars and trucks but new to toyota's. Anywho..there is a pretty loud ticking sound coming from the engine. It is a constant tick, tick, tick. It sound actually like if you had a back lifter tick or valve train tick but that is deff. not what it is. Its not coming anywhere from the top of the motor at all. It sounds to be coming from the alternator area..the alternator is also fairly new..u can even tell by the looks of it. Now all i have done so far is remove the roller tensioner for the belts to make sure that it was not bad bearing in that..it was not. My question is does this sound like anything you have heard before? Is it likely that it could be a loose timing chain slapping around, could it be the bearings in the alternator.? The sound never stops under a load or not...and the tick gets faster with the engine revving higher but never stops. I am looking for some help with where to start trouble shooting this problem..thanks ahead of time!
 
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The timing chains in these are supposed to be "done" when the engine is rebuilt. That would be a huge red flag to me.

Unfortunately, your ticking could be from a lot of places. You will need to use a mechanics stethoscope to narrow it down.
 
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yeah..the motor was not rebuilt. Just the waterpump and the timing chain were supposed to have been done. Does anyone think the chain could be a possible suspect? would it make noise around that area?
 
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my 95 had a knocking sound last fall that you would swear was the timing chain slapping around or something. Turned out to be 2 teeth missing on the alt belt. Replaced all three belts for good measure and it was smooth as silk. Not sure if that's your issue but just wanted you to know.
 
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ok..well my belts have grooves but they also had grooves before the truck made this noise..anyone have any helpful thoughts towards this problem..
 
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well i guess thats what i will have to do..it had the same alternator before and it did not make the noise..not to say that may not have changed
 

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