Cold starts

tj39194 · 01-07-2018, 06:00 PM

EZGO dcs. When weather is very cold, rev works fine, but fwd will not go. Cart shudders and stalls until warmed up, Usually by driving in rev for 3 or 4 minutes.

bronsonj · 01-11-2018, 06:03 PM

Sounds like maybe moisture in the F-N-R? Since it runs in reverse just fine you know that the motor, cables, throttle and solenoid are good.

So to me that really leaves the controller and F-N-R.

JohnnieB · 01-11-2018, 07:08 PM

A stock DCS controller (Curtis 1206SX) defaults to Forward and has to be told to go into Reverse by placing battery pack voltage on the orange wire, Pin-4.

The only difference external to the controller between Forward and Reverse in a DCS drive is the direction the amps flow in the Field windings.

Sounds like the controller's output to the Field windings is bad in Forward.

The stock DCS controller was a faulty design, so replace it with an Alltrax XCT48400 or larger controller.

01-07-2018, 06:00 PM	#1
tj39194 Not Yet Wild Join Date: Sep 2012 Posts: 9	Cold starts EZGO dcs. When weather is very cold, rev works fine, but fwd will not go. Cart shudders and stalls until warmed up, Usually by driving in rev for 3 or 4 minutes.
tj39194 Not Yet Wild Join Date: Sep 2012 Posts: 9

01-11-2018, 06:03 PM	#2
bronsonj Gone Wild Join Date: Jan 2013 Location: Saint Petersburg, FL Posts: 2,089	Re: Cold starts Sounds like maybe moisture in the F-N-R? Since it runs in reverse just fine you know that the motor, cables, throttle and solenoid are good. So to me that really leaves the controller and F-N-R.

01-11-2018, 07:08 PM	#3
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Cold starts A stock DCS controller (Curtis 1206SX) defaults to Forward and has to be told to go into Reverse by placing battery pack voltage on the orange wire, Pin-4. The only difference external to the controller between Forward and Reverse in a DCS drive is the direction the amps flow in the Field windings. Sounds like the controller's output to the Field windings is bad in Forward. The stock DCS controller was a faulty design, so replace it with an Alltrax XCT48400 or larger controller.

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