| Author | Message | ||
     Icarus1125rs |
My 2009-1125r has been in the shop for 4 weeks now. The instrument cluster would cut out and the voltage would go as high as 17.6v and then come back to 13.6. Only happened of a long constant ride, peak hour ride no issue. The fix was, new subframe - the mechanics reckon the regulator plate was warped and so the replacement of regulator, relay and a burnt pins. Electrical they reckons it is fixed. This after 4 months ago, when the 2nd stator was replaced. This was a total failure which left me on the side of the road. Here lies the my current problem. After the stator replaced, every time the bike went on a longer trip at a 100-120kmph in 5 or 6 gear and only after 30kms of travel, the bike would just cut out for 1/2 to 1 sec at coasting throttle or couple of times during overtaking. It does not happen during the 25km trip to and from work in peak traffic each day with a bit of freeway riding. So my ride days have been stuffed. It's is uncanny, open the throttle hard not issue every around town....grrr. For a week now, the mechanics connected a data logger, and sure enough after 30kms or 30-40 mins of riding the motor just stops for a brief second and jerk about and then resumes for 5-10-15 kms and the does it again. So I not going mad, they have seen a problem. The data logger shows a drop in manifold pressure on one of the maps. There are no electrical issue, everything checks out fine. They checked all the sealing, replaced the manifold pressure sensor and checked the ECM2 ground off the header for the ECM. To me it felt like an ignition cutout or fuel blockage. No error message on on the cluster. It is a big bike shop and their mechanics a stumped. They are sort of running out of ideas. The logs have been sent to Harley Tech Support in the US. Has anyone seen this sort of thing? I don't see any light at the tunnel. Much appreciate any words of wisdom. | ||
| Therealassmikeg |
looking at this from a mechanics view and not seeing the data. I see three things that come to mind. First It appears you had a over voltage issue that could have damaged an electrical component (lets just say an ecu). Since it is intermittent and you haven't stated that any fault codes were flagged I would guess this is not the problem and would try a replacement as a last resort. Although it is quite possible the tps could have an open circuit or false reading at a certain throttle position at a certain temp, it should flag a code but may not due to the time frame that the fault occurs. Second (highly probable) There was a repair made to your vehicle (stator replacement). Being that this problem only seems to happen at a certain time frame or temperature after the repair was made I would look very closely at the ckp crankshaft position sensor (this is in the stator cover). A loose sensor or damaged sensor, a damaged loose reluctor/rotor coud be at fault. A sensor that does not supply the correct ac voltage (usually 5v) will still allow the vehicle to run, intermittently cut out and not throw a fault code. This is because the sensor is still supplying the ecu with a signal but its not strong enough to enough of a signal for the ecu to comprehend and allow the engine to run. Third I've seen batteries that check out good but are really bad do all kinds of strange things to engine management systems, as well as loose grounds and power connections, terminals in connectors etc. (Message edited by therealassmikeg on July 27, 2011) | ||
| Cptncreme |
Ya my bike acted up after I got mine back for.a.stator replacement, it was the crank position sensor, it would buck and jerk around but only at light throttle and only after the bike had been running for like 20 mins. Mine threw a check engine light though. | ||
| Icarus1125rs |
Thanks guys. The US and local support have recommended a new crank angle sensor. Won't arrive for a couple of days. Their going to test it since, changing it means dropping the motor to fit the harness. Let you know how it goes. Appreciate the advice. | ||
| Two_seasons |
I would not replace anything before you check out the electrical systems and datalog voltage only for several rides. If the ECM and/or IC was seeing almost 50% over nominal voltage, there could be other damage. If it were me, the regulator and battery would be the two items first replaced. Then the CPS. | ||
| Icarus1125rs |
37 days off the road with this issue. Crank angle was replaced but didn't fix the cutting out issue. Now waiting for a throttle position sensor. I've lost faith this nice bike will ever be the same. Think we're playing the guessing game with what is the problem. Since I've had it, she's been off the road for 91 days over 14 months. | ||
| Nuts4mc |
have to agree with two _seasons...only other issue I could guess at is: a) fuel tank venting - is a line pinched? - it's dangerous - but you could take her for a spin with the gas cap loose... b) electrical grounds - try running a ground (10ga or larger) from the ground stud by the swing arm pivot directly to the motor...Ulys had some grounding issues if I remember...something may be "growing" when the bike gets hot and the electrical ground becomes unreliable...good luck down there mate! | ||
| Icarus1125rs |
Update: TPS sensor replaced and after 2 ECMs failing to communicate, the engine harness is being looked as recommended by HD. | ||
| Dannybuell |
Icarus1125rs - THX for the update. |
