Hello James,

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Hi tony have you extended this and did it work

https://www.ebay.com/itm/HARLEY-DAVIDSON-PRE-WIRED-THROTTLE-BODY-6-PIN-CONTROL-ACTUATOR-CONNECTOR-PLUG/224644881466

use wire tie to hold the two connectors together

The “drive-by-wire” system looks at variance in resistance in the loop from the TPS. Ohms resistance can be caused by corrosion, water, vibration, heat, bad quality wiring, damaged wiring (caused during Handel bar changes for one).
If your “limp-mode” can be fixed by unplugging and then plugging it back in then you have corrosion issues. Take caution when you unplug and plug the TPS connector because you can damage the pins, the wiring, and or the connector.
The use of dielectric grease can affect the resistance of the connection as it degrades over time.
A tech tip to keep moisture out of open environment connectors followed by several auto manufactures is to apply silicon to the external side of the connector. (Where the wires are inserted into the connector).
Let the silicon dry before reconnecting the connector to the TPS, this prevents the silicon from POSSIBLY running to the pin, preventing pin to pin contact. (Silicon on the TPS pins is a very bad thing = permanent limp mode until you remove all silicon from the pins and TPS plug.) Remember you are doing this to keep moisture out.
Another reason other than moisture for this to occur is “heat” breaks down the wiring changing the resistance of the wire to the TPS in the 2-3 inches of wire leading into the TPS connector. I’m testing this theory by lengthening the harness by four inches to reroute the harness to lay on the outside of the TPS behind/under the air cleaner. I am not certain this will keep this from happening again, only a few miles will tell if it does.

Hi Julia – sounds like Mark wasn’t given enough info to respond to the question.
Looks like Steve was asking about dielectric grease on the TPS connector pins which has been beaten to death here.

Im having issues with my 09 road glide.. There is limited throttle response. Im assuming that it is in Limp Mode.. Where can i find these replacement pins..pls im open to any all suggestions on how to repair this

Hi Steve,

Here is what Mark had to say regarding your question:

“If a bike with throttle by wire is assembled correctly and properly maintained, there should not be any need to lubricate this area of the motorcycle. In fact, it should be avoided. If a twist grip sensor is not turning or returning correctly, there is likely another issue that should be addressed.
Grease & dielectric grease will attract & hold dust and debris.
https://www.fixmyhog.com/post/shop-twist-grip-sensor-issues/”

Sincerely,
Julia
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