High Idle on 05 Classic

[KyMoonshine]

Check this before spending your money. This fixed my sporadic high idle. Follow the throttle cables back to behind the overflow tank. Road stuff gets in the throttle Springs and binds them up. A healthy dose of WD 40 and my fast idle was gone and had never returned. Cheap fix.

Thank you for the info, do I need to take anything apart or just clean and lube with the WD40?

 

[Sparky59]

clean and lube......as in drown it with wd-40 while manually opening and closing throttle body assmy. then using throttle open fully and let snap shut many times......
apply treatment to both ends of throttle rack...

 

[CrzystghndKC]

What Sparky said.

 

[Mongler07]

I do not like wd40 because there are dozens of other high quality solvents and lubricants that do a better job. Wd40 has its applications but only as a one stop can of its good enough.
I would never use wd40 on any part like that. There are better lubricants on the market.
But you do you. Just my 2 cents

 

[CrzystghndKC]

I do not like wd40 because there are dozens of other high quality solvents and lubricants that do a better job. Wd40 has its applications but only as a one stop can of its good enough.
I would never use wd40 on any part like that. There are better lubricants on the market.
But you do you. Just my 2 cents

Better than wasting money on a unnecessary TPS replacement. Suggesting WD 40 is just a suggestion not intended to be a rule. Just my 2 cents.

 

[KyMoonshine]

I cleaned/soaked the assembly in WD and PB but on the way in to work it only dropped below 2K rpms one time, so I guess I'm looking into TPS replacement process. I have this cable for my TDIs and thought it may work for the Rocket but I couldn't get TuneECU to do anything, the lights on the adapter at port turned green but no data I guess I need something different.

 

[Mongler07]

Better than wasting money on a unnecessary TPS replacement. Suggesting WD 40 is just a suggestion not intended to be a rule. Just my 2 cents.

Impossible to change a TPS without tune ecu. So what's the point? Just get tune ecu and find out why. Kinda pointless otherwise

 

[CrzystghndKC]

I cleaned/soaked the assembly in WD and PB but on the way in to work it only dropped below 2K rpms one time, so I guess I'm looking into TPS replacement process. I have this cable for my TDIs and thought it may work for the Rocket but I couldn't get TuneECU to do anything, the lights on the adapter at port turned green but no data I guess I need something different.

You would be wise to get the Lonelec cable recommended by the developer. It's pretty cheap. Just out of curiosity have you checked the rear TPS to make sure it's tight? It's only held by one screw. I I had mine vibrate loose once but it never caused a fast idle, it just caused a loss of power. Could be something wonky with the stepper motor if it still has one. Once again TunECU is needed.

 

[KyMoonshine]

Thanks for the suggestions, I bought TuneECU I just have to get proper cable then figure out how to check the TPS in the app

 

[KyMoonshine]

You would be wise to get the Lonelec cable recommended by the developer

it looks like they are all French or outside the US, anyone have link to working cable in the states?