Ford Taurus/Sable 1986-1995 Repair Information

Engine Speed Oscillates at Idle


When the engine idle speed will not remain constant, check for the following, as necessary:

A faulty fuel pump
A leaky Exhaust Gas Recirculation (EGR) valve
A blown head gasket
A worn camshaft
Worn timing gears, chain or sprockets
Leaking intake manifold-to-engine gasket
A blocked Positive Crankcase Ventilation (PCV) valve
Overheating of the cooling system
Fault with the computerized engine control system