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Unread 03-17-2012, 07:53 AM   #1
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Default Solenoid or Mcor

Hi guy's..I have a 05 precedent that does not want to move sometimes after sitting for a few days. When you press the go pedal it will sit there and no click noise from the solenoid. I have to hold the go pedal down for 30 sec to a min then it will move and be fine. No noise from solenoid while holding the pedal down. Batteries are 5 months old..Any help would be great
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Unread 03-17-2012, 08:27 AM   #2
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Default Re: Solenoid or Mcor

Maybe something in the solenoid activation circuit, check the F&R micro first.
You can only test this when it is not working with a digital multi meter. DMM
Or as inexpensive as they are, you could replace the forward micro switch.
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Unread 03-17-2012, 10:48 AM   #3
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Default Re: Solenoid or Mcor

this is one of those you hope just breaks down so you can figure it out and be done with it..................does it do this all the time? ..................................
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Unread 03-18-2012, 08:16 AM   #4
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Default Re: Solenoid or Mcor

yes it does it all the time. it might sit for 2 hrs before driving it and it will do it or it might sit 2 days and do the same thing.
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Unread 03-18-2012, 08:25 AM   #5
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Default Re: Solenoid or Mcor

Quote:
Originally Posted by jonitza View Post
Hi guy's..I have a 05 precedent that does not want to move sometimes after sitting for a few days. When you press the go pedal it will sit there and no click noise from the solenoid. I have to hold the go pedal down for 30 sec to a min then it will move and be fine. No noise from solenoid while holding the pedal down. Batteries are 5 months old..Any help would be great

STARTING POINT
There is a resistor wired across the 2 LARGE TERMINALS on the solenoid. This is used to "PRECHARGE" the controller so the cart will react instantly when pressing the pedal.
Check your to see if it has broken or come loose
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Unread 03-18-2012, 02:26 PM   #6
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Default Re: Solenoid or Mcor

Thanks for the advice..I see the wires that hook up to the solenoid but nothing that runs from one terminal to the other if I'm understanding you. Do you have a picture or a web site name that i can look at to see one thats wired up so I know what to look for. Thanks again
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Unread 03-18-2012, 03:29 PM   #7
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Default Re: Solenoid or Mcor

is your solenoid the black square type plastic one or just a round one? the resistor is mounted to the large post on solenoid there won,t be any wires persay......it has a ring terminal on each end that fit over the large studs if its there you should be able to tell...........just look on top of solenoid.....................
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Unread 03-18-2012, 08:27 PM   #8
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Default Re: Solenoid or Mcor

Quote:
Originally Posted by jonitza View Post
Thanks for the advice..I see the wires that hook up to the solenoid but nothing that runs from one terminal to the other if I'm understanding you. Do you have a picture or a web site name that i can look at to see one thats wired up so I know what to look for. Thanks again
see diagram of solenoid with resistor and diode (resistor on LARGE TERMINALS )
Attached Images
File Type: jpg resistor.jpg (4.4 KB, 0 views)
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Unread 03-19-2012, 04:12 PM   #9
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Default Re: Solenoid or Mcor

The resistor they're referring to is a little tough to find on a Gen1 Precedent such as yours. It doesn't bolt up to the solenoid posts, it's actually plugged into a jumper wire that branches off of each post on the solenoid. One red and one yellow. The Pre-Charge resistor has blade terminals on each end of it and plugs into each of the wires. Your problem sounds like an MCOR problem to me. Does the reverse buzzer work when the cart is malfunctioning? This is a quick and easy way to see if the system is awake. There are only two ways to wake the system up. By cycling the microswitch in the MCOR, and by inserting a charger plug and then unplugging it immediately after the charger turns on.. Try this.. After a good charge (After charge cycles completes and charger is OFF) unplug the charger from the car, put the F&R in reverse. You should have no buzzer. Turn on the key switch and press and release the accel pedal one time. Within 5 seconds or so the reverse buzzer should turn on. If it does, the MCOR is working, or at least worked that particular time you depressed the pedal, and would point more towards a solenoid issue than an MCOR issue. If you still dont have a buzzer you probably have a bad MCOR. Take the floormat out, pull the access cover and unplug the Two-Pin connector from the MCOR and use a paperclip to jump them together, then depress the accel pedal and see if it runs. If it runs, you've got a bad MCOR. If it doesn't, you've probably just got a bad solenoid.
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Unread 03-20-2012, 03:58 PM   #10
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Default Re: Solenoid or Mcor

Thanks for the awesome info Dawg..the reverse buzzer has always worked even when the pedal is pressed and its not moving. I will try the paper clip tonight. Do i need to put the cart in tow mode or anything else first before i jump the connection. Just making sure since Im in the already fried one controller club..
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