Bizarre Ultra behavior
Tourer
Joined: Aug 2008
Posts: 265
Likes: 10
From: Northern Wisconsin
Generally if it's an injector or coil issue, it will trip a code. If it's a crank sensor issue, no codes, tach will drop but speedo will not. If both the tach and the speedo drop, more likely that it's the main breaker overheating. If it's just plain flaky and inconsistent...
pull the ECM and shake it. I've found some half full of soapy water...
("never uses a pressure washer" he claims....) pfft
Hogdoctor
pull the ECM and shake it. I've found some half full of soapy water...
("never uses a pressure washer" he claims....) pfft
Hogdoctor
Stellar HDF Member
Joined: Mar 2007
Posts: 2,034
Likes: 45
From: Michigan
Dave
Advanced
Joined: Aug 2008
Posts: 51
Likes: 3
From: St. Louis, MO
Ultra Will,
Remove the R/H side cover and pull the System relay out. Look at the terminals and make sure they are all seated properly (you may have to loosen the relay mount and turn it over to pull on all the wires to ensure good connections). I had a similar problem and it was the Grn/yellow wire to the System relay was never locked into place and the terminal was just touching the relay contact and every now and then it would break contact. The system relay powers up the ignition coil, fuel pump, and fuel injectors.
Good luck,
D
Remove the R/H side cover and pull the System relay out. Look at the terminals and make sure they are all seated properly (you may have to loosen the relay mount and turn it over to pull on all the wires to ensure good connections). I had a similar problem and it was the Grn/yellow wire to the System relay was never locked into place and the terminal was just touching the relay contact and every now and then it would break contact. The system relay powers up the ignition coil, fuel pump, and fuel injectors.
Good luck,
D
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hogwings
Ignition/Tuner/ECM/Fuel Injection
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Jun 1, 2011 07:56 AM
