Ranger 4WD V6-3.0L VIN V Flex Fuel (1999)
OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 00-7-3
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage
OPERATION/DESCRIPTION/TIME
DEALER CODING
OASIS CODES: 615000, 615500
Service Procedure
SERVICE PROCEDURE
1.
Verify spark knock by road testing vehicle.
2.
Verify that the spark knock is in the combustion chamber by completely removing the fuel from the fuel tank and adding 2 gallons of 94 octane
fuel.
3.
Road test vehicle, check for spark knock, and then return the original fuel to the tank.
4.
If the spark knock was still present during the road test, this TSB does not apply to your condition. Pursue other normal mechanical noise
diagnostics and repairs.
5.
If spark knock was eliminated during the road test, unplug the ignition wires from the coil and read the stamped black 5-digit code on the label
(four numbers and one letter).
6.
If the first four numbers of the code fall in the numerical range from 7001 to 9213, replace coil with revised Coil (F5SZ-12029-A). If the service
coil label code falls in this range, obtain another service coil and again check the code on the label of the new service coil. Return coils that fall
within the range for a refund per your part return policy. Only use the service coil if the first four numbers of the code DO NOT fall within the
numerical range 7001 to 9213.
