Why does my Ford Ranger shake at idle?
Why does my Ford Ranger shake at idle? An engine misfire is the most common cause of a shaking idle, and as the engine stumbles and misfires, that should be seen in the tachometer as a drop in RPM. If the tachometer is rock steady, and the shaking seems worse in gear than out of gear, that's a pretty good indication of a bad motor mount. Is there a 4.0L engine in a Ford Ranger? The 4.0L is related to the 2.9L however, so in a way it still lives on. The 3.0L is in NO WAY related to the...