Freak Engine Problem: Dies, but will later restart

G

Gas Man

Cool isn't cheap
Calendar Participant
bradman said:
Same thing happened to me. It was the cam sensor. The teck center had me take a hairdryer to it to heat it up and behold, it would take a shit. replaced it and all was good. (till the EHC took a shit). Going on my 3rd one now.
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That sounds like a good idea to help troubleshoot.
 
Ohmster

Ohmster

Kansas Motorcycle Works
Problem with using a hair dryer is you can heat the components past their thermal limits and it will cause the component to fail since they are built to operate that way. A quick way to see if it is a power input issue from the EHC or if it is a cam plate is make about a 12" jumper wire that has clips on both ends. When this happens on the road, pull off the seat and clip one end of the jumper wire to the ground of the battery. The other end of the jumper use a T-pin, paper clip, about anything you can use to back pin into a connector. The green wire to the ignition module is cam trigger input wire. Hit your run button, if no red light then back pin a ground on the green wire. That will light up the red LED. If it lights up, its a cam plate issue. If it doesnt light up then it's a 12vdc supply issue from the EHC.
 
bradman

bradman

Banned
Pics? Im terrible at electrical. That is 1 area that kills me. Your way above my head in knowlege. The hair dryer thing was input from bigdog themselves.
 
Dakotabos

Dakotabos

Well-Known Member
Calendar Participant
Troop Supporter
bradman said:
Same thing happened to me. It was the cam sensor. The teck center had me take a hairdryer to it to heat it up and behold, it would take a shit. replaced it and all was good. (till the EHC took a shit). Going on my 3rd one now.
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Bradman get with your dealer and have them get you the redigned EHC 250 mile on mine and no problems but I want to put 1K on it before I rave it up
 
chacha

chacha

Chaff Your EHC!!
Calendar Participant
Ohmster wrote;

A quick way to see if it is a power input issue from the EHC or if it is a cam plate is make about a 12" jumper wire that has clips on both ends. When this happens on the road, pull off the seat and clip one end of the jumper wire to the ground of the battery. The other end of the jumper use a T-pin, paper clip, about anything you can use to back pin into a connector. The green wire to the ignition module is cam trigger input wire. Hit your run button, if no red light then back pin a ground on the green wire. That will light up the red LED. If it lights up, its a cam plate issue. If it doesnt light up then it's a 12vdc supply issue from the EHC.
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I'll build one up. Thanks for the tip! :cheers: I've got a sensor plate coming, so I'm gonna swap it out anyway. It's the dang intermittent nature of the failure that's the annoying part...she runs like a champ otherwise!!:2thumbs:
 
ohio dog

ohio dog

Active Member
chacha said:
OK, I'm scraching my head on this one. Any thoughts on where to go next are appreciated....:confused:

PROBLEM:
- While running, engine dies, Tach lights go out.\
- Engine will turn over fine immediately after but sounds like there's no spark.
- Waiting a couple minutes (the length of a smoke) and she starts right up and runs fine

CONDITIONS:
- Just about everything. Happens within 1 to 5 miles of firing it up. Has died at idle, under acceleration, at 40 MPH and 75 MPH
- Mostly from a cold start with the engine cold but has happened several times in a row (three) with a warm engine.
- Still have annunciator lights, turn signals and headlamp
- same conditions as hitting the "OFF" switch

WHAT I'VE DONE:

- Battery connections - Tight
- Starter connections - Tight
- put dielectric grease on EHC, Spark Plug tops
- Opened the right side controls and cleaned and dielectric greased the connections to the right hand control switch assembley.
- Inspected the right had switch assembly - found no shorts in the wires or the circuit board (Visual)
- Changed circuit breaker (it had another problem anyway)

Problem still going on. :angry:

I'm thinking the cam sensor or the coil.

What say you?

Thanks!
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man chacha you were right on us chasing similar gremlins (other forum). I'm willing to bet that we are both having the same problems. Only difference I can se is mine will do it when it's cold too....first start up of day.

Lots of great info here...glad I found it.
 
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