Campaign - Sticking Oil Pump Relief Valve: Overview
84chrysler1356
July, 1984
TO: All Chrysler-Plymouth and Dodge Dealers
SUBJECT: Customer Satisfaction Notification #356 - 2.6L Engine Oil Pump Relief Valve
MODELS: 1984 Plymouth Reliant and Voyager; Plymouth & Dodge Conquest; Dodge Aries, 600, Mini Ram Van, Caravan and D-50 Truck; Chrysler LeBaron, Town & Country E Class and New Yorker Vehicles Equipped With 2.6L Engines
A limited number of the above 1984 models may experience sticking of 2.6L engine oil pump relief valves due to mis-machined valve bores. This can lead to excessive oil pressure, rupturing of oil filters and loss of engine oil on affected vehicles..
To prevent such failures, vehicles known by engine build code to have the incorrect bores must be repaired by installing new relief valve plungers of slightly modified end dimensions.
The vehicle population is defined in the following section. Information to assist in completion of repairs is included in the Service Procedure section of this letter (A. Domestic Vehicles; B. Imported Vehicles).