Another Flexplate Problem

[Cameron Holliday]

I have a 2003 4.0 Explorer 210k km, and I am on the 3rd flexplate. The last one only lasted 100km. I changed the torque converter and the tranny last time. I checked the crank endplay and it seemed ok, will check it again. I have read these ideas from previous threads but not many solution or reporting of positive outcomes.

Check starter
check endplay of crank
HD flexplates are available
Alignment has to be bang on

Obviously we have to figure out why the first one failed, alignment can be ruled out I think.

Does anyone have a positive solution they would like to share.

Thanks Cam

 

[imp]

I have a 2003 4.0 Explorer 210k km, and I am on the 3rd flexplate. The last one only lasted 100km. I changed the torque converter and the tranny last time. I checked the crank endplay and it seemed ok, will check it again. I have read these ideas from previous threads but not many solution or reporting of positive outcomes.

Check starter
check endplay of crank
HD flexplates are available
Alignment has to be bang on

Obviously we have to figure out why the first one failed, alignment can be ruled out I think.

Does anyone have a positive solution they would like to share.

Thanks Cam

An important check, difficult but useful, might reveal the problem. The run-out present on the crankshaft end to which the flexplate fastens is critical; runout being measured on the Face of the runoutcrankshaft flange. Ford Shop Manuals call out a maximum allowable runout. I do not remember the exact number, sorry.