03-03-2016, 01:13 PM
There are hundreds CB1100 owners in Taiwan, and we have one group in Facebook (HONDA CB1100 riders’ club), we can share information and issue discussion in this group. As of today seveal CB1100 got idle speed unstable problem (Idle speed drop, then engine died; all are 14’ or 15’ model), some are solved by throttle valve assembly or idle motor replacement, some are still suffering this problem. most of them can solve the problem temperally by ignition off/on.
Here I would like to descript one case, one owner suffers serious idle speed problem for one month, his CB1100 is EX version (Y2015, mileage ~ 3000 miles), and symptoms are as follows,
1. Symptom: During riding (engine was in normal operation temperature), suddenly idle speed went up to 1500rpm (normally should be ~ 1000rpm); ignition off/on could solve this problem temporally.
2. Dealer’s actions: throttle valve cleaning, ECU reset…
3. Symptom: After dealer’s action and hours riding, suddenly the idle speed dropped to about 500 RPM the engine died at stop light. Restarted engine, but idle speed was about 500rpm, engine idle again. Ignition off/on could solve this problem temporally.
4. Dealer’s actions: adjusted some valves…(dealer didn’t descript the detailed)
5. Symptom: After dealer’s action and one hour riding, symptom is back to the same as item 1.
Owner tried TPS reset procedures - switch run, turn ignition on (but do not start), slowly twist throttle from fully closed to fully open twice, turn ignition off, the effect is the same as if just did ignition off/on only.
Dealer technician said the next action will be throttle valve assembly replacement; if didn’t work still, the following action is ECU replacement.
It will be highly appreciated if any suggestions from somebody with experiences.
Here I would like to descript one case, one owner suffers serious idle speed problem for one month, his CB1100 is EX version (Y2015, mileage ~ 3000 miles), and symptoms are as follows,
1. Symptom: During riding (engine was in normal operation temperature), suddenly idle speed went up to 1500rpm (normally should be ~ 1000rpm); ignition off/on could solve this problem temporally.
2. Dealer’s actions: throttle valve cleaning, ECU reset…
3. Symptom: After dealer’s action and hours riding, suddenly the idle speed dropped to about 500 RPM the engine died at stop light. Restarted engine, but idle speed was about 500rpm, engine idle again. Ignition off/on could solve this problem temporally.
4. Dealer’s actions: adjusted some valves…(dealer didn’t descript the detailed)
5. Symptom: After dealer’s action and one hour riding, symptom is back to the same as item 1.
Owner tried TPS reset procedures - switch run, turn ignition on (but do not start), slowly twist throttle from fully closed to fully open twice, turn ignition off, the effect is the same as if just did ignition off/on only.
Dealer technician said the next action will be throttle valve assembly replacement; if didn’t work still, the following action is ECU replacement.
It will be highly appreciated if any suggestions from somebody with experiences.