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Old 04-08-2019, 02:01 PM   #1
bdeer
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Default 2013 precedent won’t go at full throttle

I bought a disassembled 2013 precedent that was a bit of a basket case. The wiring harness has been hacked up so I ordered and installed a new harness and got it moving. The problem is that it works fine up to around 1/2 to 3/4 fill throttle on the pedal, but any more and it does nothing and acts like you aren’t on the throttle at all. I have swapped the motor, speed sensor, controller and mcor from another cart that runs fine but I’m still having the same problem even with those parts swapped for parts that I know are good. What else could be wrong?
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Old 04-11-2019, 11:41 PM   #2
NoleFan4Ever
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Default Re: 2013 precedent won’t go at full throttle

You need to verify the MCOR signal to the Controller. Could be in the linkage....

With the batteries connected, Tow/Run switch in Run; place the black (–) probe on packs main Negative post and the red (+) probe on the yellow wire at the 3-pin connector near the MCOR. (The reading should be approximately ~0.32vdc to ~0.5vdc with the pedal up). Slowly press the Go Pedal and the readings should increase until it reaches ~4.65vdc or more when the pedal is fully pressed. (Anything less than 4.60vdc and you are not reaching full throttle - verify the linkage). If the reading is erratic or jumps all over the place it is a bad MCOR output signal.....
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Old 04-12-2019, 05:21 AM   #3
Sergio
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Default Re: 2013 precedent won’t go at full throttle

You will also get that behavior if it is an Excel system (gray curtis controller) and you purchased an IQ harness.
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