High rpm

My 1998 has been sitting for 3 weeks. Went to start it today. It is idling about 4k. Won't drop down. Anyone have suggestions??

 

Put it in gear and drive it around!? Will it go down then ?

 

Check if the throttle cable is stuck partially open near the throttle body

 

Floor mat resting on pedal? Sounds like stuck cable.

 

I had mine do that once. Took it to the dealer because I couldn't figure it out and nether could they! After 5 days there, they had cleaned the entire intake and throttle body but it didn't help, changed the TPS and numerous other small things but nothing worked. The tech had to contact someone from another region and they finally figured out that a vacuum switching valve on the throttle body/intake had gone bad. I unfortunately don't have the exact part that went bad on mine but maybe you can narrow it down and research it. My truck is a 2000 2.7l. Hope it helps!

 

it idling about 3k. it does go down to about 2k when i put it in gear and drive it

 

Now was going back and forth between 4k and 2k. It would lower when put in gear to too

 

Ok, but what fixes have you already tried so people can try recommending new ones?

 

the cam that the throttle cable is on. is loose. i can tap it and it will idle back down to 800. question i have now is that spring on cam go bad. or can that be adjusted

 

not sure about adjustment. try pulling it off and reassembling with grease/lube. Im guessing something has some corrosion from sitting and the spring is too weak to return all the way