1998 Ford Ranger • 154,000 miles

98 Ranger xlt 2.5 liter 4 cyl automatic 161,000 miles. Between 40 - 60 mph truck shakes and is slow to accelerate. Under 40 and 65 and over runs fine. Sometimes it shakes at stop light/sign and sometimes it doesn't. Have checked plugs, wires, cleaned injectors, fuel pump and fuel pressure are fine. No CEL on. Have never had timing belt changed though. Any suggestions what problem might be?

August 25, 2013.

Duplicate. See original post for reply.