Hello. I have a 1997 f150 with 134k miles. I had a friend "work" on it and it's worse then ever. It idles high. I have replaced the cruise control cable because he broke it off thinking that was the problem. I then cleaned the egr because I was getting the code for that. It didn't fix the problem I then cleaned the IAC. I then cleaned the idel control and the plate because the code changed to that. It still idles high. I have noticed my gas petal sticks when I first start up my truck and take off for the Firs time. I throw gravel as I let off the clutch. What is my next option? I am thinking throttle cable?

 

Had that happen to me - the plastic doghouse over the throttle body came loose and was jamming the throttle cable open. I pulled it and left it off.

You didn't say whether you have a 4.2 V6 or 4.6 V8, mine is a V6. What is yours?

What exact codes are you getting NOW? By the numbers, please.

 

Its a 4.2L. I had the codes checked at Autozone. I forgot exactly what it was but I can find out and respond back in a moment.

 

I will have to go back into town and have them hook the computer back up for me. When I get the codes, I will post the update.

 

I finally got the code. It's P1506. They say I have a bad hose somewhere.

 

Possible causes

Faulty Idle Air Control (IAC) valve
IAC valve harness is open or shorted
IAC valve circuit poor electrical connection
Intake leaks
Stuck PCV Valve

What does this mean?

The P1506 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned. Also, check for intake leaks or stuck PCV Valve. If the problem persists, the IAC valve may need to be replaced.

Read more: https://www.autocodes.com/p1506_1997_ford_f150.html