fast idle issue on bucket truck

[swyman]

Have a 97 IH 4700 with Teco Saturn 5 and the fast idle has a mind of its own. Having trouble figuring out what controls engine to speed up when you squeezing the grip. I was assuming a pressure switch but have not located one. There is a flow switch but really not sure of its function. There is a ground and a hot wire to it when you activate control power? It's getting really annoying and need to resolve. Can anyone point me in the right direction?

 

[pro94lt]

Did you ever get this figured out mine has stated acting up as well...

 

[RVALUE]

I know absolutely nothing about these, HOWEVER some diesels have a built in 'low idle limit' that revs (over revs) the engine to compensate either electrically or mechanically as inside the engine.

Probably not the case, but a suggestion.

 

[KMF5275]

it is all good

i could walk through it and tell you what to look for. i do have ideas. 772-323-7747