05-13-2023, 01:04 PM
(05-13-2023, 11:37 AM)Obi-wan Kenobi_imp Wrote: Hello There,
My CB1100 has been experiencing high idle issues similar to other on this forum. I have spent a good amount of time reading posts hoping that someone has already figured this out for me. But I could not find someone with the exact same symptoms.
The problem I experience is that the idle RPM is about 1,500 with the clutch fully in, and the idle RPM is about 2,000 when partially out (But still dis-engaged). I have learned to ride with using two fingers to pull in the clutch. This results in my other fingers behind the clutch. When the clutch is in this position, the engine is at 2,000 RPM.
I dont think that the problem is related to the IACV because when I first start the engine it warms up at 1500 RPM and then settles at 1100 RPM. Only when I start riding does the idle never drop below 1500 RPM (clutch fully in) or 2000 RPM (clutch in with two fingers)
I think that the problem is related to the TPS because when I ride with it unplugged, the engine idles right at 1000-1100 RPM. My theory is that there is something wrong with the middle zone of the sensor. At 1500 RPM idle I get 0.5 v from the signal line, and I get 5 v on the power line.
The help I need is sourcing a new TPS. I tried cross referencing compatible part numbers and bought one for $16. That one rotated the wrong way and was no good for me. I ended up taking the OEM one off the bike, and then put it back on. Does anyone know a compatible TPS part number?
I had thought it was: 16402-REJ-W01
Compatible part numbers per random Ebay listing:
Manufacturer Part Number
16402 REJ W01, 16402 REJ 003, 16402 PWA 003
Interchange Part Number:
JT7H, JT7H20410, TPS008-03, TPS113, GEGT7610-158, 16402-RAA-A01, 16402-RAC-A01, TPS-H112, TPS-H113, JT6HB, T42002, 16402-RAA-A02, 16402-REJ-W01, T42004, 977-024, HAJT7HARK
Any other ideas are welcome. Maybe my brain is fried from thinking about this too much.
Correlation does not imply causation.
It is common for a bike / car to default to a baseline (emergency) map running situation when various components are unplugged. That does NOT mean that the part unplugged is faulty.