Bike Shuts Down When Warm

sportsterboy · Jun 30th, 2009, 10:44 PM

Hi Friends,
I have a 2001 Sporty 1200. It runs fine until I've ridden it a few miles. After it warms up to normal riding temperature it shuts down. I've been stranded twice - NO fun. Anyone have any ideas or have this problem before? Prior to this the bike had an electrical problem. After changing the battery, changing plugs and plug wires, cleaning grounds, I tested the electrical system with my multimeter. The system was not charging. Stator output was good, so I was able to isolate the problem to the voltage regulator. I changed the voltage regulator and it ran great for a few days. Now this. Any insight would be greatly appreciated.
Thanks,
SB

glider · Jun 30th, 2009, 10:51 PM

Check for any codes?

Sportster DTC Codes - Harley Davidson Community

sportsterboy · Jul 1st, 2009, 12:22 AM

Thanks Glider,
I'll try this tomorrow.
SB

Old legend · Jul 1st, 2009, 11:54 AM

Does that model have a coil on it? if so try changing it. Just like the old cars with points and a coil, the coil would heat up-wires inside would expand, shut off untill cool- run a while and do it again. It's not only the heat from outside, but the electricity going through the coil causes heat.

sportsterboy · Jul 1st, 2009, 05:36 PM

Interesting OL,
I kinda half suspected the coil. I recently read how to test the resistance of the primary and secondary coils. I'll try that also.
Thanks,
SB

Old legend · Jul 2nd, 2009, 12:40 AM

Even doing the resistance test wont tell you if there's an internal open wire. Unfortunatly the only way to really test it is to replace it and go for a ride and see if it repeats.

glider · Jul 2nd, 2009, 09:31 AM

Quote:

Originally Posted by Old legend

Even doing the resistance test wont tell you if there's an internal open wire. Unfortunatly the only way to really test it is to replace it and go for a ride and see if it repeats.

If there were an open in the internal wiring, the test would reveal an open circuit instead of a resistance value.

BDOG · Jul 2nd, 2009, 05:20 PM

Hi
I just joined (first post) because I have an 03 with all the symtoms you are discussing here. I can add that it is intermittant. It even died when it got hot. Let it cool and started right up. When trying to start it when it was hot it backfired violently.Let it set over night and stated right up. I'm afraid to take her out til I find out the problem. No codes were shown.Like every other working american, can't afford to take it to the dealer. I need you help please. What did you find out?

glider · Jul 2nd, 2009, 05:42 PM

The crank position sensor by the oil filter doesn't usually set a code but will cause problems when they start to fail. Usually it's a start no start condition but you never know.

Crank Sensor (CKP) - Harley Davidson Community

sportsterboy · Jul 3rd, 2009, 11:41 PM

O.K.,
I checked DTC codes. No codes were flashing. I checked the resistance in the primary and secondary ignition coils. They both were within the range prescribed in the shop manual. Anyone have any other ideas? Looks like BDOG has the exact same problem with his '03. I'd hate to start throwing parts at it without knowing what's going on. Sure would like to be riding.
Thanks,
SB

Jun 30th, 2009, 10:44 PM	#1
sportsterboy New Family Ride: 2001 Sportster XLH Join Date: Aug 9th, 2008 Posts: 9 My Mood:	Bike Shuts Down When Warm Hi Friends, I have a 2001 Sporty 1200. It runs fine until I've ridden it a few miles. After it warms up to normal riding temperature it shuts down. I've been stranded twice - NO fun. Anyone have any ideas or have this problem before? Prior to this the bike had an electrical problem. After changing the battery, changing plugs and plug wires, cleaning grounds, I tested the electrical system with my multimeter. The system was not charging. Stator output was good, so I was able to isolate the problem to the voltage regulator. I changed the voltage regulator and it ran great for a few days. Now this. Any insight would be greatly appreciated. Thanks, SB

Jun 30th, 2009, 10:51 PM	#2
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 20,464 My Mood:	Re: Bike Shuts Down When Warm Check for any codes? Sportster DTC Codes - Harley Davidson Community __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Jul 1st, 2009, 12:22 AM	#3
sportsterboy New Family Ride: 2001 Sportster XLH Join Date: Aug 9th, 2008 Posts: 9 My Mood:	Re: Bike Shuts Down When Warm Thanks Glider, I'll try this tomorrow. SB

Jul 1st, 2009, 11:54 AM	#4
Old legend Start The Engine Ride: 2000 883C Join Date: Jun 30th, 2009 Posts: 20 My Mood:	Re: Bike Shuts Down When Warm Does that model have a coil on it? if so try changing it. Just like the old cars with points and a coil, the coil would heat up-wires inside would expand, shut off untill cool- run a while and do it again. It's not only the heat from outside, but the electricity going through the coil causes heat.

Jul 1st, 2009, 05:36 PM	#5
sportsterboy New Family Ride: 2001 Sportster XLH Join Date: Aug 9th, 2008 Posts: 9 My Mood:	Re: Bike Shuts Down When Warm Interesting OL, I kinda half suspected the coil. I recently read how to test the resistance of the primary and secondary coils. I'll try that also. Thanks, SB

Jul 2nd, 2009, 12:40 AM	#6
Old legend Start The Engine Ride: 2000 883C Join Date: Jun 30th, 2009 Posts: 20 My Mood:	Re: Bike Shuts Down When Warm Even doing the resistance test wont tell you if there's an internal open wire. Unfortunatly the only way to really test it is to replace it and go for a ride and see if it repeats.

Jul 2nd, 2009, 05:20 PM	#8
BDOG New Family Ride: 03 Sportster Join Date: Jul 2nd, 2009 Posts: 1	Re: Bike Shuts Down When Warm Hi I just joined (first post) because I have an 03 with all the symtoms you are discussing here. I can add that it is intermittant. It even died when it got hot. Let it cool and started right up. When trying to start it when it was hot it backfired violently.Let it set over night and stated right up. I'm afraid to take her out til I find out the problem. No codes were shown.Like every other working american, can't afford to take it to the dealer. I need you help please. What did you find out?

Jul 2nd, 2009, 05:42 PM	#9
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 20,464 My Mood:	Re: Bike Shuts Down When Warm The crank position sensor by the oil filter doesn't usually set a code but will cause problems when they start to fail. Usually it's a start no start condition but you never know. Crank Sensor (CKP) - Harley Davidson Community __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me! Last edited by glider; Jul 2nd, 2009 at 06:01 PM.

Jul 3rd, 2009, 11:41 PM	#10
sportsterboy New Family Ride: 2001 Sportster XLH Join Date: Aug 9th, 2008 Posts: 9 My Mood:	Re: Bike Shuts Down When Warm O.K., I checked DTC codes. No codes were flashing. I checked the resistance in the primary and secondary ignition coils. They both were within the range prescribed in the shop manual. Anyone have any other ideas? Looks like BDOG has the exact same problem with his '03. I'd hate to start throwing parts at it without knowing what's going on. Sure would like to be riding. Thanks, SB

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Bike Shuts Down When Warm

Sportster Models