Precedent low erratic speed not MCOR issue

[TahoeDawgZ71]

Originally Posted by cmar143

Dave I installed new 1510a-5251 and cart acts the same just like a bad mcor. At low throttle range it is jerky and sometimes motor won't even react until about 40%. Could it be a bad motor? Once I get up above 60% throttle smooths out but anything less causes issues. I am at a loss at this point for ideas!

I didn't realize when I spoke to you on the phone that the motor wouldn't react at all until you got to 40%. I think you've got a motor issue. Put the other motor in it that we spoke about and see how it behaves.