noisy rattle

145

Asked by Feb 28, 2012 at 10:12 PM about the 1999 Ford Explorer 4 Dr XLT AWD SUV

Question type: Maintenance & Repair

There is a noisy rattle that increases and decreases with the speed of the engine.  
Quite loud.  Sounds like the tach cable possibly??  yes, no, ideas??  No loss of power
or performance either.

6 Answers

685

possiblly timing tensioners

3 out of 3 people think this is helpful.
15,400

Nick. There are front and rear tensioner on my son's 2003 V6 Same goes for the 99 V6?

685

if its a sohc v6 there is a front and rear chain. and if it is the rear chain the motor will need to be pulled in order to make the change

1 out of 1 people think this is helpful.
145

Me thinks this is gonna cost me,

685

this is basically a worst case. it could be something other than the timing chains, but its not uncommon for a soch v6 to have worn tensioners or guides

15,400

My 03 began making the same noise at 78000, sounded like what most call a stuck lifter. Pulled the engine and checked the tensioners and the guides looked good. Changed them anyway. A slight improvement (lack of clatter) but not much. A month later I clattered myself over to a friends mechanic to have him look at it. When I started it up again in the bay the engine blew at idle. A golf ball size hole right through the block above the starter. Obviously something with the crank. I found out tensioner problems and blown engines are not uncommon with the engine design. Since I purchased the vehicle new, was a stickler for maintanence, and didn't dog the engine, it didn't blow from abuse.

2 out of 2 people think this is helpful.

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