Proform xp650e, incline driving continuosly in max incline position with loud clunks/bumps

Ball joint or cv axle

ck struts and ball joins

That sounds like a loose exhaust pipe or a metal cover plate underneath that has come loose.Check it out.

Hi sir
Please do the next:
How to Lubricate an Elliptical Fitness Exercise Equipment Elliptical Noise Troubleshooting
Blessing
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You must LUBE the deck belt first, this happen because you do not lube maintenance schedule, Do it every week from use.Maybe you have a WORN deck belt.

2) LUBE the rollers bearing front and end, use WD-40

3) Test the drive belt motor, for cracking or worn, and replace.

God bless you

Run the software calibration for easy diagnose, troubleshooting, and fix it.
God bless you

When plugging my treadmill in it was going at max speed without the key even in. Now it has slowed to a complete stop and I can not get it to move. The incline works, but not the speed.

Under the motor shroud their is a instruction mini manual it will have a how to calibrate the incline motor, if that does not fix it then you may have to manually adjust the incline motor and sometimes it will take awhile to realign . If that does not work replacing the motor maybe the only option

shocks my be going bad push up and down hard on top of the car over each front wheel and let go..it should not bounce up and down more than once. if it does shocks are bad.

universal joints clunk,is it in the rear end then maybe it is the rear end.you kinda need to be more specific if this information doesn't help