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I replaced my CPS on my King a couple of months ago. The bike would start right up in the morning, but once it got hot, it would start backfiring as I slowed down. It also ran a little rough. I had no clue what the problem was, then we stopped at a gas station one day after riding most of the day. Couldn't get the bike started until it cooled down. Then as the bike heated up again, running rough and backfiring. A little time on Google and I decided to spend the $57 and change out the CPS. That was it, all fixed. Well, at least until the VSS went out about a month ago. All in all, the same type of sensor. I understand that these sensors have a history of going bad.
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1999 Mystic Green Road King Classic
Stage 1
A crank sensor should emit a voltage pulse across the leads when the engine is rotated. Anybody know what it is on the Harley CPS. Others I've read about are in the 2-5 volt range.
Ron
__________________ 07 Softail Custom
V&H BSS
Screaming Eagle Heavy Breather
Screaming Eagle Big Twin Compensator
Tmax
Harley Blade 41681-07 wheel
The puppy lasted until fall. Now in teardown mode for new build
A crank sensor should emit a voltage pulse across the leads when the engine is rotated. Anybody know what it is on the Harley CPS. Others I've read about are in the 2-5 volt range.
Ron
According to my dyna manual they require a minimum 1 volt AC while cranking. Also lists a ohm range of 600-1200 if fails either first check for loose fit of sensor, last make sure end is clean of debri. If it failed to produce 1vac and or ohm out of the 600-1200 range is tightly installed with a clean end to replace the sensor. I would bet the B motor in the softies are the same spec but may not be.
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2006 Wide Glide
American suspension's Dragon Springer
Fabricated to fit softail rear bobtail fender
06 Night Train dish wheel with 200mm tire
And some other stuff
yep just spent 88 bucks on cps and system relay and starter relay the good news i now have all three spare parts due to that dident solve i fricken problem still square one i think fuel pump or regulator not getting enough pressure to injectors and all this is new 88 miles ago im pisted off anyone ever get a pert from harley and afeter a month or so go bad? are thay fair and take care of it or just say screw you ??? i dident have them do the work my buddy has a cycle shop he did the work i bought the parts?
yep just spent 88 bucks on cps and system relay and starter relay the good news i now have all three spare parts due to that dident solve i fricken problem still square one i think fuel pump or regulator not getting enough pressure to injectors and all this is new 88 miles ago im pisted off anyone ever get a pert from harley and afeter a month or so go bad? are thay fair and take care of it or just say screw you ??? i dident have them do the work my buddy has a cycle shop he did the work i bought the parts?
What made you think it was the cps anyway?. Didn't seem to fit since you had spark.
+1 on that. the cps tells it when to spark. it can be sparking and still not fire if it is reading incorrectly and sparking at the wrong time. thats why it will be very hard to start or start and not run correctly once started. also pick up metal and not work correctly
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You cant know where your going until you know where you've been
07 Softail Custom
still square one i think fuel pump or regulator not getting enough pressure to injectors and all this is new 88 miles ago im pisted off anyone ever get a pert from harley and afeter a month or so go bad? are thay fair and take care of it or just say screw you ??? i dident have them do the work my buddy has a cycle shop he did the work i bought the parts?
