Arland ... 4/10/2010
2002 Ford Ranger Edge 6 Cyl 3.0L
rough idle, won't go over 3000rpms without "jackrabbiting"
I've changed spark plugs/wires, fuel filter, and throttle position sensor. no luck. Seems to run smooth between 1500 and 2800 rpms
Bill Bowen 4/11/2010
Check your fuel pressure, it might be your fuel pump or you may have a bad gas cap, a cracked fuel line, allowing air in the gas line, it might be the seal around the fuel pump.