tps evaluating for ii issues

[pdedse]

First, thank all of you guys for your support! I really, really appreciate all the time and effort you gentlemen are putting into helping me resolve this issue.

Update: Sprayed the TPS connector with electrical cleaner Saturday. Put 180 miles on the CB Sunday; ½ freeway, ½ mountain / back roads. Temperature was in the upper 70’s, and the elevation change was from sea-level to 4,000 feet. Averaged about 80 mph on freeway for 40 miles. Bike ran perfect. Only turned it off twice and restarted, and maybe 10 stoplights. Perfect 1,050 RPM idle each time.

Here’s some information that might help shed some light: My bike initially had a high RPM (1,400 RPM) issue, which I haven’t experienced in over probably 18 months now. When I was experiencing a high idle condition and I pulled to the side of the road to try anything I could to cure it. I turned it off and on, using the key. I turned it off and on with the kill switch. I turned it off, and then performed the TPS reset process. I blipped the throttle with the engine running, revving it as high as 6,000 RPM. Nothing helped. But suddenly, almost like someone flipped a switch, the RPM dropped, and the engine stalled. When I restarted it I believe that this was the first time that I ever experienced the low RPM idle condition. I am not 100% sure, but this may have been the last time my bike ever experienced the high RPM idle, but now began the low RPM idle condition. So I believe that whatever is causing my low RPM idle must have a root cause related to something that has the potential to change quickly, and that something has the ability to cause both a high and low RPM idle condition. What can change quickly? An electrical connection? The electrical output of one of the sensors? I don’t think it would be a vacuum leak, because it resulted in both a high and low idle condition.

I will look into the EVAP purge control valve, recommended by Doc. Unfortunately, right now I am committed to a lot of OT at work, so I don’t have time in the evening, and this weekend is the Supercross. I can put off the fork seal replacement and steering head bearings replacement on my VFR, and the head gasket replacement on my car, but I won’t be able to get back to working on the CB11 for at least a week. I do plan to ride the CB11 tomorrow evening, and I will report any issues.

Doc, the loud noise I reported when I first turn on my key (that you asked me about) seems to have gone away. I still hear the sound of the fuel pump and (I think) IACV cycling when I turn on the key, but not as loud as it did on that one occasion.

Cool.