98 FLHTCI Quit Running
Cruiser
Joined: Jan 2007
Posts: 163
Likes: 1
From:
My 96 Ultra did the same thing, ran, shutdown, started, shutdown. Duration of shutdown got longer and longer until it just would not start again. Ended up the Cam Sensor, fried.
You can test it. Start your bike to make sure it starts before you test, shut if off immediately. Pull the cam cover and get a hairdrier and heat the cam sensor till its hot to the touch. If it heat failing it may not start again.
The part is cheaper than a another tow, $125 takes about an hour to change it.
You can test it. Start your bike to make sure it starts before you test, shut if off immediately. Pull the cam cover and get a hairdrier and heat the cam sensor till its hot to the touch. If it heat failing it may not start again.
The part is cheaper than a another tow, $125 takes about an hour to change it.
Seasoned HDF Member
Joined: Feb 2007
Posts: 6,086
Likes: 1,128
From:
did a quick check and found this from another forum: copy /paste
ezrider
IronButt
Join Date: Jun 2003
Location: Florida
Posts: 296
GOOD NEWS TODAY: I decided to clean all the connector plug contacts on my ECU and sensor plugs located under the right side cover with a good electronics contact cleaner.
When I pulled the 35 pin plug off the ECU and looked at the contacts under some good light I could see some white oxidation/corrosion on some of the pins so I sprayed them good with the cleaner and swabbed them with Q-tips.
While I was doing this work I pulled the 5 & 15 amp ECU fuses so I would get a good ECU reset when I was done. I pulled apart and cleaned every plug I could find under the right side cover with the contact cleaner.
I also cleaned the contacts on the ECU and fuel pump relays under the seat, I saw some light corrosion/oxidation on these relay blade connectors too.
Put it all back together and went on a 175 mile ride today. Not one hiccup, stumble or dying at idle the whole day. Bike ran as good as I ever remember, the idle was also smoother than I ever remember it being.
What does this all mean? I'm not exactly sure but I know this, my MM EFI system worked fine for 7 years before something went wrong so it is easy to conclude that it can be fixed to work fine again.
Could it be that those of us with problems are overlooking the obvious i.e. just keeping the connector plug contacts clean?
Going forward I will be cleaning all these contacts like I did today at least once a year provided the MM system keeps working for me otherwise it's carbville.
________________________________________
Last edited by ezrider : 06-12-2008 at 11:31 PM.
ezrider
IronButt
Join Date: Jun 2003
Location: Florida
Posts: 296
GOOD NEWS TODAY: I decided to clean all the connector plug contacts on my ECU and sensor plugs located under the right side cover with a good electronics contact cleaner.
When I pulled the 35 pin plug off the ECU and looked at the contacts under some good light I could see some white oxidation/corrosion on some of the pins so I sprayed them good with the cleaner and swabbed them with Q-tips.
While I was doing this work I pulled the 5 & 15 amp ECU fuses so I would get a good ECU reset when I was done. I pulled apart and cleaned every plug I could find under the right side cover with the contact cleaner.
I also cleaned the contacts on the ECU and fuel pump relays under the seat, I saw some light corrosion/oxidation on these relay blade connectors too.
Put it all back together and went on a 175 mile ride today. Not one hiccup, stumble or dying at idle the whole day. Bike ran as good as I ever remember, the idle was also smoother than I ever remember it being.
What does this all mean? I'm not exactly sure but I know this, my MM EFI system worked fine for 7 years before something went wrong so it is easy to conclude that it can be fixed to work fine again.
Could it be that those of us with problems are overlooking the obvious i.e. just keeping the connector plug contacts clean?
Going forward I will be cleaning all these contacts like I did today at least once a year provided the MM system keeps working for me otherwise it's carbville.
________________________________________
Last edited by ezrider : 06-12-2008 at 11:31 PM.
Seasoned HDF Member
Joined: Feb 2007
Posts: 6,086
Likes: 1,128
From:
another copy /paste
wtcardr
Premium Member
Join Date: Jan 2006
Location: georgia
Posts: 31
I was told by techs at the dealership that many MM efi problems were caused by moisture entering the ecm connections. They said many problems were solved by simply cleaning the contacts (pins) and coating with dielectric compound. One of the parts guys at the local dealer has a 2000 flhtcui that he washes constantly and has problems. The techs always kid him that if he rode it dirty he wouldn't get moisture in the connectors and have to clean them.
wtcardr
Premium Member
Join Date: Jan 2006
Location: georgia
Posts: 31
I was told by techs at the dealership that many MM efi problems were caused by moisture entering the ecm connections. They said many problems were solved by simply cleaning the contacts (pins) and coating with dielectric compound. One of the parts guys at the local dealer has a 2000 flhtcui that he washes constantly and has problems. The techs always kid him that if he rode it dirty he wouldn't get moisture in the connectors and have to clean them.
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