2015 summit t3 bogs or misses at midrange

[MBsuspensionservice]

Sled just came off of break in and it's developed a horrible miss at 6500.
had the latest ecm flash, new plugs, added weight to the clutch, put the stock can on, cleaned raves and have pretty much exhausted all my things to try...

if if I accelerate slowly it seems to be fine but from a dead stop or half to full it stumbles and misses and won't pull 7900.

any ideas as this one is out of warranty...

 

[jjmyzrider]

Buddy had the same issue in Revelstoke a few weeks ago. Dealer said the computer showed 80+ "overrevs". Reason being, he put in a lighter spring and the rpms spin up faster, computer cuts it out and prevents it from "overreving". Your added clutch weight might be the problem. Not sure if this is whats up with your sled. He would have little to no issues at higher elevations.

 

[tex78]

Yep, over raving or reving too fast


Clicker down to one and see

 

[MBsuspensionservice]

It's in one and by adding pin weight it should lower the revs but doesn't seem to help. Seems to pop and miss fire almost like its lean...

 

[catrutt]

Fuel pump pressure low? My 14 did that

 

[jjmyzrider]

lowers the revs, yes. but increases how fast it reaches max rpm. that increased rate to obtain max rpm is what I believe is being calculated by the computer. thus cuts out to avoid over revving, by gaining rpm too fast.

This is the way I understand it, a BRP tech will have way more knowledge than me. I'm just an electronics tech who gathers info for fun.

As stated by catrutt, could be that simple as well. i think that was an issue with some.

 

[tex78]

Yes it's the rate at which it accelerates that it retards engine


Stock clutching, clicker one and see what it does

 

[MBsuspensionservice]

Figured it out. Shorted wire rubbing on the hose clamp that was grounding out the ecm. Got to love electrical problems

 

[jjmyzrider]

Awsome good work.