Join Date: Feb 2010
Location: Thompson Falls, Montana
Feedback: 0 reviews
It definitely sounds like something is not right.
Things I'd want to check:
Motor amp draw at no load... You'd need a good ammeter for this. It might also be worth removing the motor to test it too. If it's drawing huge amps without a load, then it's likely the motor windings are bad. Replacement motors are pretty easy to find, including some WAY upgraded ones (Gigglepin!).
I's also check the relay pack without the motor attached, maybe that thing is shorting out and consuming a bunch of power somehow. Chinese knockoffs are not known for their strong quality control.
Brake... Maybe the external brake is remaining engaged somehow. it might be worth checking or removing the brake temporarily to see if that is maybe causing additional load during power in.
FWIW, my money is on the motor. they take a beating, get wet, get overheated... and I'm guessing it's an old motor.. probably 10 years or more if it's your typical old 8274.
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.
I've tried them all... Jeeps are still the best. (0||||0)