500ss extremely high idle

[spencerbdog]

i have recently done a little work to my 04 500ss rev, I added a sno-stuff rumble pack and a power madd riser kit, my problem is that ever since that it idles at 4000rpm, i started it after i installed the can and it ran fine. It's not till after i installed the riser and put on the throttle extension that it started running like this

if anyone can help or give any suggestions they would be greatly appreciated
thanks.

 

[maxwell]

your throttle cable is either incorrect model or isnt adjusted/installed properly or is binding. its basically pulling the throttle cable making it idle high.

you need to trace through the extension and figure out what is going on. sometimes with the powermadd extension you can incorrectly place the throttle cable split into the box. that will cause this. your throttle should have a couple of mm free play in the cable