C
Okay well I asked about this a while back, got some good ideas, but I haven't found anything definite yet.
Still working on my 05 900 RMK 166 with a loss of power/bog at anything over approx. 6500 ft. I was told it was running really rich, but I don't know for sure. Very poor if any power, flat, barely pull itself on the trailer.
Below approx. 6500ft, runs awesome, no problems at all, like a switch turned on and off.
Swapped ECU for new, no improvement. No codes.
I was thinking that maybe the TPS was off, the intake boots cracked, or something similar was causing a lean mixture which the ECU was handling by adding more fuel but when the alitude increased beyond what the ECU could compensate for, it went lean and the DET sensor retarded the timing and fattened up the mixture. This is all pretty much a guess at this point.
The boots looked cracked, so I pulled them and checked the TPS at the same time. Idle voltage was .908 and WOT was 4.9 and the analog meter showed smooth movement. The boots don't look cracked all the way through, and the reeds are dirty and kinda crappy looking but I just haven't found the smoking gun yet....
What do you think of the boots? (I'll replace them anyway)
What about the reeds? Is that much dirt normal?
Anyone have ideas?
I need to do a bunch of other stuff to this sled but don't want to waste the money if I can't get it running right. I'm at 1200 feet now, so this doesn't help my troubleshooting.
Thanks a bunch in advance...
:beer;
Still working on my 05 900 RMK 166 with a loss of power/bog at anything over approx. 6500 ft. I was told it was running really rich, but I don't know for sure. Very poor if any power, flat, barely pull itself on the trailer.
Below approx. 6500ft, runs awesome, no problems at all, like a switch turned on and off.
Swapped ECU for new, no improvement. No codes.
I was thinking that maybe the TPS was off, the intake boots cracked, or something similar was causing a lean mixture which the ECU was handling by adding more fuel but when the alitude increased beyond what the ECU could compensate for, it went lean and the DET sensor retarded the timing and fattened up the mixture. This is all pretty much a guess at this point.
The boots looked cracked, so I pulled them and checked the TPS at the same time. Idle voltage was .908 and WOT was 4.9 and the analog meter showed smooth movement. The boots don't look cracked all the way through, and the reeds are dirty and kinda crappy looking but I just haven't found the smoking gun yet....
What do you think of the boots? (I'll replace them anyway)
What about the reeds? Is that much dirt normal?
Anyone have ideas?
I need to do a bunch of other stuff to this sled but don't want to waste the money if I can't get it running right. I'm at 1200 feet now, so this doesn't help my troubleshooting.
Thanks a bunch in advance...
:beer;
Last edited:
