occasionally when i go to start my 2000 F-150 5.4L the grinder squeals as if it is bad i have had my mechanic put on two different starters and a new flywheel and it is good for about three weeks than does it again. there are no service bulletins and the mechanic and i are out of ideas. Any advice would be appreciated.

 

Not too sure. Mine did that, and when I put my new engine in, I looked at the starter and the flywheel, both looked brand new, but I put a new flywheel on my new engine, and it has yet to grind again.

 

i talked to the dealership and they recommended checking to see if the crankshaft is true. my truck has 126,000 miles on it is actually possible the crankshaft is bent? personally i would think their would be other issues if the crank was actually bent.

 

sounds like a FOS answer

 

LOL um... dont go there ever again.

 

so took my truck back to the shop today and eliminated the crankshaft idea. what in else could it possibly be?

 

im going to say it just happens. Not sure why, but mine did it for 4-5 years, no wear on the starter or flywheel