So... for months I have been fighting what I thought was a lean miss issue (well before I parked it for the winter). It would only happen when I was just barely into the throttle at cruise. It started to get really bad in the past couple days since I brought it out of storage. It was getting so bad I noticed that it wasn't a miss, it was the whole engine losing either spark or fuel. Pulled the TPS cable and the problem disappeared. Last year I had suspected it was the idle circuit but bypassing that made no difference.
I replaced the TPS board 2 years ago. Put the old one back in (looked fine) and all of my problems disappeared. The only thing I can think of is that it was somehow causing the injectors to stop firing when it hit this one spot about a half inch into the throttle.
Here is a picture of the board. It doesn't look great, but it doesn't look bad either.
So, one more thing that might go south on a 914 with weird symptoms. That thing really only works as an accelerator pump and an idle circuit switch. So strange it could have such an effect.
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