95 medalist running jerky

camperdave · 01-31-2009, 06:53 PM

When I push down on the petal, I get a sort of humming sound and a lot of jerking. Sometimes the cart will go really slow.....and other times it will go faster but cuts out jerking to a stop almost as if I slammed on the brakes, darn near causing whip lash. I guess I would describe it as sort of a studdering effect. letting off of the petal will sometimes help for a second or two but thats all. I have cleaned all battery terminals and wires....checked all the wires and motor connections....taken apart and checked the F-N-R switch...taken apart checked and bypassed the on/off switch. Checked and bypassed the micro switch, and today I even took 6 batteries out of my friends Cart to see if it was just my batteries and it still did the samething.
.......what should I try next? We got a foot and a half of snow here now so I got sometime before camping season starts and I need it.

JRay · 01-31-2009, 10:56 PM

If you did all that i would take a peek inside that motor, might be brushs.

camperdave · 02-01-2009, 02:53 PM

Thanks...I'm getting an internet education, an just looked up motor brushes. This is all new to me, but I'm willing to learn as I go. How will I know if the brushes are bad? What am I looking for?

camperdave · 02-07-2009, 04:52 PM

Today I took the motor off, and looked at the brushes...they looked good as far as i could tell...had good contact and spring tension....I took it all apart and cleaned everything with electric motor cleaner while i had it apart. Got it back together and it still does the jerking and cutting out. Anything else I should try before I throw in the towel?

pggroves · 02-07-2009, 06:11 PM

Let's see. 95 Medalist. Pot box I think.
Check it out.
Pot box is ohms. 0-5k. Smooth rise from 0 at no throttle to 5k at WOT.

camperdave · 02-07-2009, 06:43 PM

Okay....Thanks I will give that a try next...the microswitch seems to be working and i was able to bypass it and still got the herky jerky deal. Im guessing you are talking about the potentiometer? (round thing with a hole in the middle)...lol.....Thanks again!

pggroves · 02-07-2009, 07:52 PM

To be honest, I don't remember if that cart has a pot box or and ITS. The testing is different for the ITS.

ez rider 95 · 02-07-2009, 11:36 PM

95 medalist is an ITS under your rubber mat on floor

camperdave · 02-08-2009, 04:05 PM

Okay thanks!....Inductive Throttle sensor? (ITS)....so thats the round thing with the hole in it? I'm guessing....the only other thing in the box is the micro switch and the rod attached to the pedal. I give it a try!

eadavis · 02-08-2009, 05:17 PM

Sounds like you got it located know to test it

01-31-2009, 06:53 PM	#1
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9	95 medalist running jerky When I push down on the petal, I get a sort of humming sound and a lot of jerking. Sometimes the cart will go really slow.....and other times it will go faster but cuts out jerking to a stop almost as if I slammed on the brakes, darn near causing whip lash. I guess I would describe it as sort of a studdering effect. letting off of the petal will sometimes help for a second or two but thats all. I have cleaned all battery terminals and wires....checked all the wires and motor connections....taken apart and checked the F-N-R switch...taken apart checked and bypassed the on/off switch. Checked and bypassed the micro switch, and today I even took 6 batteries out of my friends Cart to see if it was just my batteries and it still did the samething. .......what should I try next? We got a foot and a half of snow here now so I got sometime before camping season starts and I need it.
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9

01-31-2009, 10:56 PM	#2
JRay **** guzzler Join Date: Dec 2006 Location: S. E. Mich. Posts: 730	Re: 95 medalist running jerky If you did all that i would take a peek inside that motor, might be brushs.

02-01-2009, 02:53 PM	#3
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9	Re: 95 medalist running jerky Thanks...I'm getting an internet education, an just looked up motor brushes. This is all new to me, but I'm willing to learn as I go. How will I know if the brushes are bad? What am I looking for?
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9

02-07-2009, 04:52 PM	#4
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9	Re: 95 medalist running jerky Today I took the motor off, and looked at the brushes...they looked good as far as i could tell...had good contact and spring tension....I took it all apart and cleaned everything with electric motor cleaner while i had it apart. Got it back together and it still does the jerking and cutting out. Anything else I should try before I throw in the towel?
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9

02-07-2009, 06:11 PM	#5
pggroves steeplejack x Join Date: Jan 2007 Location: Republic of Texas Posts: 3,382	Re: 95 medalist running jerky Let's see. 95 Medalist. Pot box I think. Check it out. Pot box is ohms. 0-5k. Smooth rise from 0 at no throttle to 5k at WOT.

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02-07-2009, 06:43 PM	#6
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9	Re: 95 medalist running jerky Okay....Thanks I will give that a try next...the microswitch seems to be working and i was able to bypass it and still got the herky jerky deal. Im guessing you are talking about the potentiometer? (round thing with a hole in the middle)...lol.....Thanks again!
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9

02-07-2009, 07:52 PM	#7
pggroves steeplejack x Join Date: Jan 2007 Location: Republic of Texas Posts: 3,382	Re: 95 medalist running jerky To be honest, I don't remember if that cart has a pot box or and ITS. The testing is different for the ITS.

02-07-2009, 11:36 PM	#8
ez rider 95 Not Yet Wild Join Date: Sep 2008 Location: Troy IL. Posts: 50	Re: 95 medalist running jerky 95 medalist is an ITS under your rubber mat on floor

02-08-2009, 04:05 PM	#9
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9	Re: 95 medalist running jerky Okay thanks!....Inductive Throttle sensor? (ITS)....so thats the round thing with the hole in it? I'm guessing....the only other thing in the box is the micro switch and the rod attached to the pedal. I give it a try!
camperdave Not Yet Wild Join Date: Jan 2009 Posts: 9

02-08-2009, 05:17 PM	#10
eadavis Gone Wild Join Date: Jan 2009 Location: Texas Panhandle Posts: 170	Re: 95 medalist running jerky Sounds like you got it located know to test it

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