normalcyispasse
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Posts: 27
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« Reply #30 on: June 02, 2011, 09:38:32 PM » |
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Yep, turns out that it's the TPS. The TPS had been reset using the Ducati VDST and that didn't report a problem. However, a test with a custom harness extension, a multimeter and a screwdriver showed me today that the TPS was reporting erratic voltages at small throttle openings: It was internally consistent with the throttle shaft, though, so was fooling the scan tool. I cleaned the Weber PF09 unit as well as possible and reinstalled it.
Lo and behold, now the bike runs great! It's not sputtering or popping at all, even on closed-throttle deceleration.
On the other hand, based on a quick EGA test, it's running very fat. Well, an EGA test and the smell -- it's DEFINITELY running rich. But at least it's running! I'm out of the country for a couple weeks starting tomorrow; when I get back I'll probably replace the TPS and will definitely have to re-balance the throttle bodies and tune the bike.
And now I'd like to buy another TPS because I don't know that I trust this one. Looks like it was used in a number of Ducatis as well as Cagivas and even Ford cars. Hopefully I'll find one that's affordable!
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