Higher Than Normal Engine Idle on Ford Ranger

The engine may have a higher that normal idle at times. After cold start with an automatic transmission and when the clutch is depressed with a manual transmission. Our technicians tell us updated powertrain control module (PCM) software is available to address this concern.

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Average mileage: 115,929 (75,000–189,000)
Engines affected: 2.3L 4 Cylinder, 3.0L V6, 4.0L V6
10 model years affected: 1990, 1991, 1996, 1997, more1999, 2000, 2007, 2008, 2009, 2010
17 people reported this problem
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problem details
1990 Ford Ranger - 2.3L 4 Cylinder
have replaced computer aic maf or map whichever tps switch checked hoses ,just about everything i can think of. Idles at about 2100 rpm and now its started sputtering when so called idling. mash the gas and it goes just fine. but will not idle properly. any suggestion would be worth a million and a half.
I can't get my engine to idle down. I have replaced the IAC valve but that did not solve my problem. What else could be causing my problem?
2010 Ford Ranger - 2.3L 4 Cylinder 96,000 mi,
high idle speed at times when clutch is depressed.
2009 Ford Ranger - 2.3L 4 Cylinder 97,433 mi,
Revs high on start up and contines when idling. Has not been fixed
1996 Ford Ranger - 3.0L V6 140,000 mi,
Engine steadly idles very high
2007 Ford Ranger - 2.3L 4 Cylinder 85,000 mi,
I was not able to repair. New throttle body.