cloudy
Just got it firing!
I'm posting this for what it's worth...............
My '93 Daytona started acting up a little late last year right as winter set in, where-in once hot it would sometimes, though rarely, go "flat" like there was water in the gas or something similar. It usually cleaned itself up when I added throttle, but as winter was setting in and I was starting the GSXR Fork install, I didn't check into that problem until this spring.
I assumed maybe the original fuel filter might be getting fouled (19,000 miles) so I installed a new filter and replaced all the fuel lines once I had the new forks, etc. dialed in. This didn't help, as the problem got worse to the point that once I got the bike warm it would run really rough and/or like there was a fueling problem. As the only sensors on the bike are for barometric air pressure, air temperature, and cylinder head temperature (called oil temp sensor in the shop manual, and cylinder temp sensor in the parts book), I tried unhooking the cylinder head temperature sensor wire once warmed up, and the bike ran fine.
When I tried ordering the sensor I discovered it was superseded by the more common one used for recent vintage Guzzi's, where-in the last number of the part number changed from a 0 to a 1. I tried MG Cycle, Harper's, and one other outfit that all showed the sensor as unavailable, which I assume means it was backordered significantly, as no one could tell when or if one would become available. MG Cycle had mentioned he thought one for one of the watercooled Ducati's might work, so I stopped at my local Ducati dealer to check it out.
Koup's Cycle Shop had a cylinder head temperature sensor in stock, I believe for an air cooled late model big twin Duck, that had the same connector, same manufacturer, and the same threads as the original I'd removed. Some of the numbers stamped on the flats of the "nut" were different, but as it was available and actually a little cheaper, I bought it and installed it. All the running issues are now gone and the bike seems to run just fine. I'm not sure if the temp sensor acts like a cold/hot switch, or if it provides a "ramped" output to the ECU to provide finer control of the injection system. When I get the bike safety inspected later this week I may have my exhaust gases checked to see what that shows, and if doubt may have it run on the Dyno to check AFR's at various points. Hopefully I haven't wasted a "C" note getting the Ducati version, but we'll see.
The Ducati part number for the sensor I got is 55240131A FWIW.
Bill
PS - The inexpensive, modified U-Joints I installed now have 1500 trouble free miles on them and seem to be holding up very well. This is explained in another thread started by MOTO510- "Swapped GSXR Forks to '96 Daytona".
My '93 Daytona started acting up a little late last year right as winter set in, where-in once hot it would sometimes, though rarely, go "flat" like there was water in the gas or something similar. It usually cleaned itself up when I added throttle, but as winter was setting in and I was starting the GSXR Fork install, I didn't check into that problem until this spring.
I assumed maybe the original fuel filter might be getting fouled (19,000 miles) so I installed a new filter and replaced all the fuel lines once I had the new forks, etc. dialed in. This didn't help, as the problem got worse to the point that once I got the bike warm it would run really rough and/or like there was a fueling problem. As the only sensors on the bike are for barometric air pressure, air temperature, and cylinder head temperature (called oil temp sensor in the shop manual, and cylinder temp sensor in the parts book), I tried unhooking the cylinder head temperature sensor wire once warmed up, and the bike ran fine.
When I tried ordering the sensor I discovered it was superseded by the more common one used for recent vintage Guzzi's, where-in the last number of the part number changed from a 0 to a 1. I tried MG Cycle, Harper's, and one other outfit that all showed the sensor as unavailable, which I assume means it was backordered significantly, as no one could tell when or if one would become available. MG Cycle had mentioned he thought one for one of the watercooled Ducati's might work, so I stopped at my local Ducati dealer to check it out.
Koup's Cycle Shop had a cylinder head temperature sensor in stock, I believe for an air cooled late model big twin Duck, that had the same connector, same manufacturer, and the same threads as the original I'd removed. Some of the numbers stamped on the flats of the "nut" were different, but as it was available and actually a little cheaper, I bought it and installed it. All the running issues are now gone and the bike seems to run just fine. I'm not sure if the temp sensor acts like a cold/hot switch, or if it provides a "ramped" output to the ECU to provide finer control of the injection system. When I get the bike safety inspected later this week I may have my exhaust gases checked to see what that shows, and if doubt may have it run on the Dyno to check AFR's at various points. Hopefully I haven't wasted a "C" note getting the Ducati version, but we'll see.
The Ducati part number for the sensor I got is 55240131A FWIW.
Bill
PS - The inexpensive, modified U-Joints I installed now have 1500 trouble free miles on them and seem to be holding up very well. This is explained in another thread started by MOTO510- "Swapped GSXR Forks to '96 Daytona".