V8i petrol engine-misfire

V8I PETROL ENGINE-MISFIRE

Model

Range Rover Discovery Defender

Affected vehicles

All V8i Petrol derivatives

Date

1994-03-04

Reference

04/03/94

Bulletin text

V8i Petrol Engine - Misfire/Stall

MODEL AFFECTED VEHICLES

Range Rover Discovery Defender All V8i Petrol derivatives

DETAIL

A number of reports have been received which detail engine misfire/stall condition under load. Investigation by Land Rover engineers has found that the pins in the female side of the diagnostic connector can open up resulting in a poor contact. The inadequate contact results in a poor/intermittant ground path at the connector, which will cause a misfire or stall condition.

To overcome this condition the connector pins require resetting and cleaning. To prevent re-occurrence a cable tie wrap is placed around the male and female halves of the connector to secure them firmly together.

ACTION REQUIRED

Upon customer complaint follow the procedure below.

PARTS INFORMATION

ASU 1421 Cable tie- 290 mm long or similar.

Electrolube, contact treatment grease-SGB aerosol, order code SGB 200H or (ozone friendly 279-493).

Refer to page 2 for supplier information on Electrolube.

PROCEDURE

Range Rover - Diagnostic plug located under right hand front seat adjacent to the ECU. Discovery -Diagnostic plug located behind the kick panel in the front right hand footwell. Defender - North American specification only Diagnostic plug located in the right hand footwell behind the fascia lower trim panel.

1) Disconnect the diagnostic plug. 2) Inspect the female side of the connector and close down the female pins to original profile. 3) Connect and disconnect the diagnostic plug 3 to 4 times to ensure a good contact. 4) Ensure the female connector and pins have not been distorted. 5) Use Electrolube contact treatment to coat the male and female pins.

Continued........

04/03/94

12/02/94/EN

WARRANTY

Normal warranty policy and procedures apply.

COMP. CODE

7F8

SRO

Range Rover 86.70.89/26 Inspect and repair 00.20 hour Discovery and Defender 86.70.89/26 Inspect and repair 00.30 hour

V8i Petrol Engine - Misfire/Stall

MODEL AFFECTED VEHICLES

Range Rover Discovery All V8i Petrol derivatives

6) Re-connect the diagnostic plug. 7) Fit the cable tie around the diagnostic plug to firmly secure the plug together. 8) Discovery only: Turn the diagnostic plug back to the main EFI harness and secure both the connector and harness together using a cable tie wrap.

Supplier details for Electrolube Grease:

Farnell Electronic Components Limited

Telephone Facsimile

France-Lyon 010-337-465-9466

Germany-Munich 010-4989-613-0301 010-4989-613-03119

Holland-Utrect 010-313-041-2323

Ireland-Dublin 010-3531-309277 010-3531-309016

Australia-Parramatta 010-612-644-7722 010-612-644-7898

England-Leeds 0532-790101 0532-633411

Export direct line for other territories: 0532-793100

04/03/94 12/02/94/EN