[Firefly]

Have about 70 miles on my KRX and it started to get very hard to shift gears. Noticed RPMs at idle have increased from around 1300 rpm at idle to about 1700 rpm now which is engaging clutch and making it hard to shift. Gonna be going in to the dealer but was wondering if anyone else had this issue and what was the culprit.

 

[Rocky Heap]

I looked up Idle Speed Adjustment in my Factory service manual..........not a simple adjustment, as it's auto controlled by the ECU Idle control system using closed loop feedback from vacuum and air temp sensors. Spec is idle at 1,250.

sorry for the bad news, it's a dealer adjustment I'm guessing with diagnostic computer. I tried.

 

[Ajb9]

Take a look at the throttle pedal cable adjustment under the dash and make sure there is no obstruction

 

[Firefly]

Throttle pedal cable looks good and has just a hair of slack in it. No obstructions, Started it up today and miraculously it fixed itself. Rpm's stayed right at 1250 - 1300 at idol and shifted nice. I'm sure it will rear its ugly head again. This ought to be a lot of fun trying to fix.It was raining pretty good the day it started acting up and there was a lot of water on the mountain roads I rode. Been nice and sunny last 3 days. Not to say that has anything to do with it . But will write that down as a variable. Thanks for your help

 

[Ajb9]

you may have got water into a connector plug some where.. I though that Kawi used water tight connectors in there engine bay... but would be worth a look.. maybe as simple as packing some die electric silicone in a connector plug .. this scenario happens to a lot of Polaris snowmobiles because they don't use watertight connectors on there sled.. water gets trapped into a connector causing an electrical ghost and it won't run right.. by the time you get it to the dealer its all dry and runs fine. so guys on there forum just take every connector apart and pack it with die electric silicone grease and problem solved..
one thing to check that someone else had an issue with a krx going through water was the fuel canister plug that lays under rear console shorted cause it picked up water.. die electric silicone grease is your friend on these things..

 

[Mike Davis1107]

I have the idle 1800 rpm issue and never have fixed it yet. Or found out why.
Have had an ECU flash, so dealer automatically said was that. Sent ECU back and ECU was set at stock again on rpm.. installed back. Same 1800 rpm issue. So honestly been couple weeks and I haven't worried with it.
I did also start having same issue on a rainy as heck day when this happened. Also I thought may ave got bad gas, and clogged fuel filter. Was going to just deal with all of it once turbo dropped and add that I'm sure all of the components and the fix will happen installing turbo.

 

[Bennboyd]

Throttle pedal cable looks good and has just a hair of slack in it. No obstructions, Started it up today and miraculously it fixed itself. Rpm's stayed right at 1250 - 1300 at idol and shifted nice. I'm sure it will rear its ugly head again. This ought to be a lot of fun trying to fix.It was raining pretty good the day it started acting up and there was a lot of water on the mountain roads I rode. Been nice and sunny last 3 days. Not to say that has anything to do with it . But will write that down as a variable. Thanks for your help

Throttle pedal cable looks good and has just a hair of slack in it. No obstructions, Started it up today and miraculously it fixed itself. Rpm's stayed right at 1250 - 1300 at idol and shifted nice. I'm sure it will rear its ugly head again. This ought to be a lot of fun trying to fix.It was raining pretty good the day it started acting up and there was a lot of water on the mountain roads I rode. Been nice and sunny last 3 days. Not to say that has anything to do with it . But will write that down as a variable. Thanks for your help

no issues on my end. Shifting can sometimes be tight at first but quickly loosens. No idle concerns either and I run a lot of deep water

 

[Red]

I had/have the exact same issue. Mine seems to come and go, but I did notice something that may help others if they run into this problem on the trials. If I take it from full power mode to low power mode (the electric switch) the RPM would drop and I could shift from high to low like normal. When I went into reverse the RPM stay up and I could not the only way out was force it or turn the motor off and put it in high or low.

I would think that with the RPM dropping in idle from full power to low power it has to be something in the computer not the cable to the throttle but that is more of a gut feeling than fact. I have not done any flash changes to the computer this is a stock machine.

If anyone finds a real fix I would love to hear it. This machine has around 1500 miles on it and this just started so I don't think its a break in thing.

 

[Paul65]

Mine did it a while back, it's been multiple weeks if not two months.

Symptom: very difficult to shift gears. At first you may not know why!
Why: idle RPM way high, normal is 1250-1300 and we are seeing 1800. So the wet clutch is engaged. So you are trying to shift gears while the engine is coupled to the differential through the wet clutch.

What I did to limp home on the trail: Turn the engine off, shift gears, only start the engine when it is in the gear you want to use to move the machine. Yes, three point turns suck.

What I did to fix it: never figured it out! All I did was put it in neutral and rev it up about five times. DO NOT try to put it in gear until the RPM's drop back to the normal idle speed of 1250-1300. Once I did that, it has not reoccurred and it has been 500 miles and plenty of hours since then.

 

[Tanya]

I had/have the exact same issue. Mine seems to come and go, but I did notice something that may help others if they run into this problem on the trials. If I take it from full power mode to low power mode (the electric switch) the RPM would drop and I could shift from high to low like normal. When I went into reverse the RPM stay up and I could not the only way out was force it or turn the motor off and put it in high or low.

I would think that with the RPM dropping in idle from full power to low power it has to be something in the computer not the cable to the throttle but that is more of a gut feeling than fact. I have not done any flash changes to the computer this is a stock machine.

If anyone finds a real fix I would love to hear it. This machine has around 1500 miles on it and this just started so I don't think its a break in thing.

SOUNDS LIKE YOU HAD AN OBSTRUCTION/MUD ON THE THROTTLE CABLE... LOOSENED IT UP AND KICKED IT OUT WHEN YOU WERE REVVING IT

 

[JTW]

Check your air filters, spark arrestor and fuel filters.. I think most of this happens because the air filters get blocked and it throws the AFR off resulting in higher rpms. Clean the air filter and let it idle for a long while and see if it gets better. Same could possibly happen with an exhaust restriction from a plugged spark arrestor. Those easy checks and fixes would be where I’d start.

 

[Chilled Rider]

Be sure you give the ecm time to configure its self after doing a tune.