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All 6 batteries are new and have a voltage of just over 8…

Customer Question
All 6 batteries are...

All 6 batteries are new and have a voltage of just over 8 volts but the cart is still moving a bit slow

Mechanic's Assistant: Have you checked all the fuses? Do you have a wiring diagram?

If a fuse is blown the cart would not even move. Is that not correct?

Mechanic's Assistant: What is the make/model/year of your car?

President club car 2008

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Just got all new batteries

Submitted: 1 month ago.Category: Electric Vehicles
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Customer reply replied 1 month ago
Is anybody there?
Answered in 21 minutes by:
5/25/2018
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago
Curtis B.
Curtis B., Other
Category: Electric Vehicles
Satisfied Customers: 31,102
Experience: Worked on fleet of various electric vehicles, golf carts, scissor lifts and electric booms.
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Thanks for giving me the opportunity to work with you! I will do my best to help.

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Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

D you have a voltmeter? What is reading across the battery pack? A 48-volt pack, fully charged will be close to 54 volts. Does the charger come on when attached to the cart?

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Customer reply replied 1 month ago
the voltage is about 51 volts
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Not as high as it should be if fully charged. Does charger come on when attached?

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Customer reply replied 1 month ago
voltage is now 52.4 v
Customer reply replied 1 month ago
The charger does work and comes on when attached
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Is it on charge?

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Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Hook up the charger and read the battery pack voltage.

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Customer reply replied 1 month ago
53.9 V
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

unless it is climbing, the charger is not working.

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Customer reply replied 1 month ago
it is climbing. Was 48v then 50v now 53.9v and climbing
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Let it charge until charger cuts off, then try cart.

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Customer reply replied 1 month ago
now 54.1 v
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Let it charge until charger cuts off, then try cart.

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Customer reply replied 1 month ago
did that 3 times already. The cart runs slow when the 6 new batteries are fully charged.
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Same problem with old batteries?

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Customer reply replied 1 month ago
The old batteries were no good and I changed them this year. Could it be the speed sensor?
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Can be problem with the foot pedal, (MCOR) motor control output regulator, or speed sensor on the drive motor.

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Customer reply replied 1 month ago
what are the diagnostics to check them?
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago
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Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago
Ask Your Own Electric Vehicles Question
Customer reply replied 1 month ago
In what order should I test them? What about the foot pedal?
Customer reply replied 1 month ago
What is your best guess?
Customer reply replied 1 month ago
Cart goes very slow up hills but goes better down hills so I not think it is the speed sensor. Is that logic correct?
Customer reply replied 1 month ago
Does the speed sensor test you gave me apply to a 2008 president car?
Customer reply replied 1 month ago
Are you there?
Customer reply replied 1 month ago
Are you there still?
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

I was outside working on a mower. I'm thinking the MCOR.

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Customer reply replied 1 month ago
I disconnected the speed sensor and the cart is still behaving poorly as it did with it attached. What does that mean?
Customer reply replied 1 month ago
I did the speed sensor test per the link and the cart did not beep.
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Have you tried the MCOR test?

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Customer reply replied 1 month ago
I do not have the hand held club car computer. So no I did not.
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

You can test it with a multimeter on ohms.

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Customer reply replied 1 month ago
Thanks. I will try. But what about the speed sensor? Is it good?
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

You said it made no difference, s I assume it is good.

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Customer reply replied 1 month ago
Not sure I understand that logic. The cart performs poorly with or without the speed sensor attached. It is as if it is not there.
Customer reply replied 1 month ago
Not sure how an ohm reading could do the test given on the website.
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

Read through this one!

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Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago
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Customer reply replied 1 month ago
that test will take a while. What about the speed controller?
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

The MCOR is what sends the throttle signal to the controller. It is not the likely culprit!

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Customer reply replied 1 month ago
then it sounds like you think it is the speed sensor.
Electric Vehicle Mechanic: Curtis B., Other replied 1 month ago

No, I think it is the MCOR at the foot pedal!

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Customer reply replied 30 days ago
How do I test the MCOR at the foot pedal?
Electric Vehicle Mechanic: Curtis B., Other replied 30 days ago

It was in the link I sent from Buggys gone wild.

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Electric Vehicle Mechanic: Curtis B., Other replied 25 days ago

I see the question is still open.??

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Experience: Worked on fleet of various electric vehicles, golf carts, scissor lifts and electric booms.

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