Hey guys, not sure if this is the right spot for this.....
I have a fuel injected 98 RKC. I have developed a hesitation on the throttle. When a give it gas there is a slight delay, if I roll on very slowly, no delay. Sometimes when approaching a stop, the idle will remain high, as if it is stuck? Weird. Doesn't do it all the time. The hesitation is intermittent as well. The other day sitting at a light, the idle would go up and down all on its own. The engine has come on, then it has gone off. When I start the bike the engine light does not come on as if there was a code....
I know it s a lot of weird stuff, but was hoping I could get some direction.

 

Try spraying/cleaning the IAC sensor in the throttlebody with some Mass Air Flow cleaner. Stuff a small rag or paper towel behind it so any dirt and debris doesn't go into the heads.

 

10-4 Oldenough..... All about doing the cheap stuff first!!!

 

Yep, it'll run you about $4-5 a can.

 

Had the same issue with my 89 rk. Replaced throttle position sensor and its fixed

Same symptoms

 

No Idle Air Controller (IAC) on a Magneti Marelli EFI.

This system uses an Idle Speed Controller (ISC), a mechanical linkage idle control for both cold and warm/hot running. Two separate screws.

Check for intake leaks...this will drive poor idle quality.

Also check fuel pressure for possible pressure leaks inside the tank and/or plugged up fuel filter.

Check the linkage on the forward side of the throttle body to assure the nut with the tab to hold it from turning, is there holding the linkage together. Sometimes this nut comes loose which, in turn, causes all kinds of idle issues.

Bob

 

Hey RKJohn... Did you notice an issue with idle prior to the hesitation issues??
Seems I notice the idle doing some odd thing as well prior to the hesitation issues...

 

Sure did