Hard to Start Cold, Stalling at Idle on Ford Ranger

If you experience cold starting problems, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve. This valve helps the vehicle idle steadily and run when the accelerator pedal is not pressed.

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Average mileage: 166,392 (46,500–338,975)
Engines affected: 2.3L 4 Cylinder, 2.5L 4 Cylinder, 3.0L V6, 4.0L V6
10 model years affected: 1991, 1992, 1993, 1994, more1996, 1998, 1999, 2000, 2003, 2005
29 people reported this problem
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Viewing 1 - 14 of 14 problem details
1991 Ford Ranger - 3.0L V6 204,000 mi,
Truck runs fine when warm, but has trouble starting when cold and holding an idle. Anything above 3000 RPMs and it stalls outright. Other random times during idle it will mysteriously sputter and cough, then die. Already spent $100 replacing distributor cap, coil, rotor, plugs, and wires (everything except spark plugs, because I was lacking the correct tool). After doing work, Ranger ran fine (because it was already warm). Next day went out to start it up and go to work, but it barely made it a block down the street, died, and wouldn't start back up.
1998 Ford Ranger - 2.5L 4 Cylinder 215,000 mi,
doesn't like the cold weather. idles very low and won't stay started. when it warms up, it's fine
1992 Ford Ranger - 2.3L 4 Cylinder 170,000 mi,
92 Ford Ranger stalls if I let it idle for even a minute. If I come to a stop, the truck may stall or backfire when I hit the gas and it may not get any acceleration. The truck runs fine in the higher rpms or on the highway. I'm forced to rev the engine at stops to keep the truck from stalling. The problem has been getting progressively worse
1998 Ford Ranger - 4.0L V6 145,000 mi,
Truck hard to start when cold. Replaced aic valve mass air flow sensor and battery. Truck still stalls and lacks power.
1994 Ford Ranger - 2.3L 4 Cylinder 298,231 mi,
Won't start when the weather is cold. Turns over and gets gas but won't start. Later in day when it warms up it will start.
1998 Ford Ranger - 2.5L 4 Cylinder 130,000 mi,
Engine begins to rough idle while stationary, at a light etc., but If the gas pedal is given a quick tap it will smooth out and continue to run, otherwise it will stall. Restart has not been a problem so far and the number of occasions has been minimal. Has not been in for repair yet.
2003 Ford Ranger 338,975 mi,
I'm having trouble starting the engine of the vehicle difficult, especially in the morning. There was a lot of smoke coming out of the exhaust pipe after switched on. Every day I found mutual radiator water is reduced and the need to fill at least 750ml. Similarly, the engine oil needs to be filled every weeks since decreased. Are the problems experienced my vehicle and tell me what to do for my vehicle? TQ. Type of Engine 2.5cc model 2003 Ford Renger.
2003 Ford Ranger - 4.0L V6 46,500 mi,
Occasional high idle at startup turned into stalling at idle. It starts right back up but if it falls below 2K rpm, it sputters and stops.
1994 Ford Ranger - 2.3L 4 Cylinder
Hard start rough idle and dies at stop light intermittent
2000 Ford Ranger - 2.5L 4 Cylinder 110,000 mi,
Will not idle when cold. After warming up for 2 minutes...all is well. Replaced the ECT sensor and sender both....cured the problem for all of a day.
1994 Ford Ranger - 2.3L 4 Cylinder 114,000 mi,
Hard to start cold, rough idle, won't stay running until warms up..
1996 Ford Ranger - 4.0L V6 173,000 mi,
Will not idle at cold or after engine warms up.. Sometimes engine will barely idle but surges terribly
1992 Ford Ranger - 3.0L V6 200,000 mi,
Stalling in cold
1994 Ford Ranger - 4.0L V6 167,000 mi,
It takes about 4 turn overs to get it to catch and start