2.3L ('02-'11) High idle on 2003 ranger

[Justin1722466]

I have a 2003 Ranger and recently I have been having problems with high idle. After a few minutes of driving when I push the clutch in it revs up to 3000 RPM or so. it will do it with the air conditioning on and off. Is this normal? I’m not much of a mechanic so I really need some help thank you.

 

[pjtoledo]

it is not normal.
my 2005 did that occasionally several years ago. I'd goose it a couple times and it usually settled down. ran some Seafoam thru it, cleaned the IAC, re-set the electrical connector on the IAC several times to clean the contacts.
it stopped doing it without a solid reason of what fixed it.

 

[Fredness]

Look for a bad, missing of loose hose connection.
3,000rpms is a 1/2" or so connection of unmetered air - PCV or Evap...

 

[Justin1722466]

It seems like some days it, Sometimes it doesn’t. And today when the engine was warmed up and after driving for about 10 minutes it started to do it.

 

[Nonamer473]

I have the same issue. I replaced the IAC in it because the code 1506 came up. I thought I reset the computer but maybe not. What is an easy way to reset the computer? Negative charge on the battery? Also can too much transmission fluid cause a problem like that?

 

[Nonamer473]

I have the same issue. I replaced the IAC in it because the code 1506 came up. I thought I reset the computer but maybe not. What is an easy way to reset the computer? Negative charge on the battery?

P.S. I don’t have A/C so not sure how to drive it so that the computer will read the new IAC

 

[Ozuye10]

I’m having a high idle on startup but goes away almost immediately. Think I should replace the IAC?

 

[corerftech]

High idle on start up that goes away very quickly is normal, quickly being 1 minute of so? Is it not?

 

[dmb2613]

My 3.0 did it for a year. replaced the iac 3 times, same thing. I put an alt on it Monday . IT HAS NOT REVED UP SINCE. The alt was putting out 14.2 volts but amps were down. The battery light was coming on at times too
David