Misdiagnosed Leak Detection Pump System (18-01-00)

MISDIAGNOSED LEAK DETECTION PUMP SYSTEM

TECHNICAL SERVICE BULLETIN

MISDIAGNOSED LEAK DETECTION PUMP SYSTEMS WITH DTC P1494, P0442, P0455, OR P0456

Model(s): 1997-2000 Dodge (AB) Ram Van

1997-2000 Dodge (AN) Dakota

1997-2000 Dodge (BR/BE) Ram truck

1998-2000 Dodge (DN) Durango

1997-2000 Chrysler (FJ) Sebring

1997-2000 Dodge (FJ) Avenger

1997-2000 Eagle (FJ) Talon

1997-2000 Chrysler (JA) Cirrus

1997-2000 Dodge (JA) Stratus

1997-2000 Plymouth (JA) Breeze

1997-2000 Chrysler (JX) Sebring Convertible

1997-2000 Chrysler (LH) Concorde, LHS, 300M

1997-2000 Dodge (LH) Intrepid

1997-2000 Eagle (LH) Vision

1997-2000 Chrysler (NS) Town & Country

1997-2000 Dodge (NS) Caravan

1997-2000 Plymouth (NS) Voyager

1997-2000 Dodge (PL) Neon

1997-2000 Plymouth (PL) Neon

1997-2000 Plymouth (PR) Prowler

1997-2000 Dodge (SR) Viper, Viper GTS

1997-2000 Jeep (TJ) Wrangler

1999-2000 Jeep (WJ) Grand Cherokee

1997-2000 Jeep (XJ) Cherokee

1997-1998 Jeep (ZJ) Grand Cherokee Group: Vehicle Performance Bulletin No.: 18-01-00 Date: February 4, 2000

DISCUSSION

During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement.

The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.

WARRANTY INFORMATION

POLICY: Information Only.