Harley hiccup
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Stage IV
Joined: Jun 2016
Posts: 4
Likes: 0
From: Cullman
Harley hiccup
I have a 2000 ultra fuel injected and it pulls a code 56 crank/cam sensor, runs good as long as your in the throttle but cruising it spits and sputters, it even idols... I took to shop and put on computer he said only thing he knew was to change both sensors and see..... Any body got any suggestions?
Ok I changed both sensors, still the same are there any other sensors that could be causing my problems?
Ok I changed both sensors, still the same are there any other sensors that could be causing my problems?
Last edited by Mikez4; Jul 4, 2016 at 06:19 AM.
Road Captain
Joined: Mar 2016
Posts: 600
Likes: 231
From: Dewey, Arizona 86327
Crank sensor can get covered with metal dust and screw up, fixed with cleaning. On my 2000 RK, when the crank sensor went, it was DEAD. No firing at all. Easy swap, part was about $45 if I remember right. Might be a problem finding one, 2000s are starting to drop off the (computer) parts books at dealers.
Outstanding HDF Member
Joined: May 2013
Posts: 3,427
Likes: 164
From: Home
Have them do a fuel pressure test. It should be a constant 58 to 62 psi when running no matter what the throttle position is at.
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Road Master
Joined: Sep 2009
Posts: 1,169
Likes: 9
From: Southern Illinois
Clean throttlebody, check for intake leaks, does it have an add on tuner? When mine did the same thing ( MM system) I had a lean condition at steady throttle, had to fatten it up some. Also check the wire from CK sensor to ECM for a break in insulation.
Last edited by Bodean46; Jul 4, 2016 at 10:50 AM.
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Seasoned HDF Member
Joined: Apr 2012
Posts: 9,982
Likes: 5,220
From: Michigan
My 2000 Ultra started the hiccup thing at about 75,000 or so miles.
After changing plugs, plug wires, intake seals, etc., etc., bike would NOT "code".
I had to have the Engine Temp Switch replaced and then the bike "coded" indicating a bad ECM (MM of course).
Could not locate and OEM so we went with an aftermarket brand and the bike ran better, but it never started as good as it did before.
Just a word of caution here:
Be sure that your tech has experience on MM system.
THe guy that bought my bike had a S&S EFI system installedand it ran like a "*** out of Hades"
Good luck.
After changing plugs, plug wires, intake seals, etc., etc., bike would NOT "code".
I had to have the Engine Temp Switch replaced and then the bike "coded" indicating a bad ECM (MM of course).
Could not locate and OEM so we went with an aftermarket brand and the bike ran better, but it never started as good as it did before.
Just a word of caution here:
Be sure that your tech has experience on MM system.
THe guy that bought my bike had a S&S EFI system installedand it ran like a "*** out of Hades"
Good luck.
Cruiser
Joined: Apr 2010
Posts: 116
Likes: 5
From: San Antonio, Texas
Like Next In Line said, check the the fuel pressure. The MM systems are notorious about developing pin holes in the plastic corrugated fuel ones inside the tank. My bike ran ok until about a half tank and then it started to starve for fuel. There's a previous write up in the forum about how to fix this problem