Ignition Module - Engine No Start/Poor Start: Overview
02/09/9486/08/94/US
MODEL
Range Rover
Discovery/Defender
SUBJECT
Poor Start or Non Start Related To Ignition Module Failure
AFFECTED VEHICLES
Range Rover LH 464554 to LH 651319-Discovery LJ 081991 to LJ 094035-Defender from LD 917122
DETAIL
Some instances of poor start/non start have been reported on vehicles in the VIN range shown. When this symptom occurs it can be as a result of failure by the to control the coil primary current accurately. This leads to dwell angles in the excess of 40 degrees at idle. In certain conditions the high current causes the coil to overheat and the insulating compound may leak from the unit, resulting in eventual failure module has been introduced into production to reduce the the likelihood of failure. Mounting the module remote away from the distributor reduces temperature, electrical interference and vibration , thus minimising the likelihood of failure. NOTE: Erratic dwell between 1000 and 3000 rpm (less than 30 degrees) does not signify module failure. For this condition refer to Bulletin 86/05/94.
NOTE:
Parts returned through the warranty system will be examined to determine nature of failure. If no fault is found with the ignition module/coil the warranty claim will be rejected.
ACTION REQUIRED
For instances of excessive dwell angle at idle or ignition module/coil failure, fit the Service kit identified below and where coil leakage is experienced fit a new coil.
PARTS INFORMATION
STC 1856 Service Kit.
PRC 6574 Coil
WARRANTY
Normal warranty policy and procedures apply.
COMP. CODE
7B8U
7A8Z
Ignition module
Ignition coil
SRO
86.35.89/26 - 00.50 hour