lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car
Electric Club Car Electric DS, and Precedent golf cars



Post New Thread  Reply
 
Thread Tools Display Modes
Old 08-04-2012, 08:53 PM   #1
Gone Wild
 
TahoeDawgZ71's Avatar
Club Car
 
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 3,408
Default DS IQ or Precedent Speed Sensor Test

I'd like to submit this thread as a potential "Sticky"

I see people explaining daily how to perform a speed sensor test and I think it would be beneficial to have it listed permanently at the top of the page...

A little history lesson..

In 2002 Club Car came out with what they called the IQ system. It consists of a shunt wound motor/controller combination much like the older Regen1 and Regen2 (PowerDrive Plus) vehicles. All DS IQ cars have a serial number prefix of "AQ" All Precedents are equipped with either the IQ or Excel system. The excel system functions very similar to the way the IQ system does so this thread applies to them as well. Lots of people get the misconception that you can "Un-Plug" the speed sensor to eliminate their regenerative motor braking. This was true prior to 2002, but after the introduction of the IQ that all changed. If the IQ or Excel system detects that the speed sensor circuit is not working, it triggers a "limp-mode" and will not allow the car to run full speed.

Symptom: Vehicle is extremely slow. It may start off strong, but immediately slow to a crawl. (Around 8 MPH)

Speed Sensor Test procedure: Make sure the car is not in sleep mode. This can be accomplished by driving it a few feet. Just make sure it's running. With F&R Switch in either of the three positions, and Tow/Run switch in the "Run" position, push the vehicle manually to simulate a vehicle roll-away. The "Roll-Away" braking feature will attempt to slow the car to keep it from "Rolling away" This will be accompanied by a series of "Beeps" from the reverse buzzer while the car is slowing itself down. If the vehicle pushes freely with no resistance this will tell you that there is no communication from the vehicle speed sensor to the controller. 99% of the time this means that there is a speed sensor failure. Once it's replaced the car will return to normal working condition.

There are two different motors used on these vehicles. This means there are two different speed sensors as well.

GE motor. This motor is dark grey in color and utilizes a "Snap-in" speed sensor on the end of the motor. OEM# 102265601

ADC Motor. This motor is black in color and is more common. Especially in vehicles built after 2006. The speed sensor is shaped similar to a "Top-Hat" and is held onto the end of the motor by two small bolts. OEM# 102704901

Hope this helps with your diagnosis and repairs.
TahoeDawgZ71 is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Old 08-04-2012, 09:09 PM   #2
Gone Wild
 
erict's Avatar
Club Car
 
Join Date: Sep 2011
Location: East Michigan
Posts: 1,308
Default Re: DS IQ or Precedent Speed Sensor Test

Good helpful post David. Is it also true that if one has upgraded there motor from stock then there is no speed sensor since the regen has been removed?
erict is offline   Reply With Quote
Old 08-04-2012, 10:08 PM   #3
Gone Wild
 
TahoeDawgZ71's Avatar
Club Car
 
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 3,408
Default Re: DS IQ or Precedent Speed Sensor Test

Quote:
Originally Posted by erict View Post
Good helpful post David. Is it also true that if one has upgraded there motor from stock then there is no speed sensor since the regan has been removed?
Not exactly. The controller still must sense a signal to prevent it from going into limp mode. But in order to increase speed without regenerative braking you must trick the controller into thinking you're running a slower speed than what you truly are. The standard magnet on an IQ motor emits 4 pulses per RPM. High speed motors and high speed magnets incorporate a 2 pulse per RPM design. This allows the controller to detect a signal, but the top speed is doubled.... example..... if the controller detects 15 MPH, your motor is actually running 30MPH...
TahoeDawgZ71 is offline   Reply With Quote
Old 08-04-2012, 10:12 PM   #4
Gone Wild
 
erict's Avatar
Club Car
 
Join Date: Sep 2011
Location: East Michigan
Posts: 1,308
Default Re: DS IQ or Precedent Speed Sensor Test

Quote:
Originally Posted by TahoeDawgZ71 View Post
Not exactly. The controller still must sense a signal to prevent it from going into limp mode. But in order to increase speed without regenerative braking you must trick the controller into thinking you're running a slower speed than what you truly are. The standard magnet on an IQ motor emits 4 pulses per RPM. High speed motors and high speed magnets incorporate a 2 pulse per RPM design. This allows the controller to detect a signal, but the top speed is doubled.... example..... if the controller detects 15 MPH, your motor is actually running 30MPH...
Got it...
erict is offline   Reply With Quote
Old 08-04-2012, 10:27 PM   #5
Gone Wild
 
Join Date: Jul 2012
Posts: 914
Default Re: DS IQ or Precedent Speed Sensor Test

Hey David,
How is the regen disabled.
Speedchaser is offline   Reply With Quote
Old 08-04-2012, 10:37 PM   #6
Gone Wild
 
TahoeDawgZ71's Avatar
Club Car
 
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 3,408
Default Re: DS IQ or Precedent Speed Sensor Test

Quote:
Originally Posted by Speedchaser View Post
Hey David,
How is the regen disabled.
Pedal-UP regen becomes so mild with a half pulse magnet that you won't even feel it. Speed-limiting regen is still there, but your cart won't have the power to ever reach "Top" speed
TahoeDawgZ71 is offline   Reply With Quote
Old 08-04-2012, 10:40 PM   #7
Gone Wild
 
erict's Avatar
Club Car
 
Join Date: Sep 2011
Location: East Michigan
Posts: 1,308
Default Re: DS IQ or Precedent Speed Sensor Test

Quote:
Originally Posted by Speedchaser View Post
Hey David,
How is the regen disabled.
As David said it really is never disabled but trick into thinking the cart is going slower. They use modified speed sensors on the motors so therefore the cart will never see the max speed to activate regenerative braking.
erict is offline   Reply With Quote
Old 08-04-2012, 10:46 PM   #8
Gone Wild
 
Join Date: Jul 2012
Posts: 914
Default Re: DS IQ or Precedent Speed Sensor Test

Wow, that is something I did not know, thanks, you guys keep amazing me.

One question though, When you get a new controller the regen is done anyway right?
Speedchaser is offline   Reply With Quote
Old 08-04-2012, 10:48 PM   #9
Gone Wild
 
TahoeDawgZ71's Avatar
Club Car
 
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 3,408
Default Re: DS IQ or Precedent Speed Sensor Test

Quote:
Originally Posted by Speedchaser View Post
Wow, that is something I did not know, thanks, you guys keep amazing me.

One question though, When you get a new controller the regen is done anyway right?
It all depends on which controller you get. Some of them don't utilize the speed sensor, some do.
TahoeDawgZ71 is offline   Reply With Quote
Old 08-08-2012, 05:02 PM   #10
Mr. Helper
 
ForBruce's Avatar
Club Car
 
Join Date: May 2009
Location: NY Catskills & Bronx
Posts: 435
Default Re: DS IQ or Precedent Speed Sensor Test

photo of both type speed sensor
Attached Images
File Type: jpg speed sensor finished view .jpg (177.3 KB, 0 views)
File Type: jpg speed. sensor round. JPG.JPG (48.1 KB, 0 views)
ForBruce is offline   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car


Thread Tools
Display Modes


Similar Threads
Thread Forum
MCOR? Speed Sensor? Controller? Cart Runs at half speed. Advice, please. Electric Club Car
08 precedent electric speed sensor problem. Cart starts at proper speed then slows . Electric Club Car
precedent motor speed sensor Electric Club Car
08 precedent speed sensor Electric Club Car
Speed sensor for CC Precedent Electric Club Car


All times are GMT -5. The time now is 02:59 PM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.