Regal V8-350 5.7L DSL VIN N FI (1982)
Glow Plug: Technical Service Bulletins
Glow Plug - Failure (Burned Out)
Model Year
1983
Bulletin No.
83-237
File In Group
68
Number
4
Date
Feb.. '85
SUBJECT:
GLOW PLUG FAILURE (BURNED OUT)
MODELS AFFECTED: 1980-83 DIESEL ENGINES WITH THERMAL CONTROLLER SYSTEM
The thermal controller requires feed back from three sources to determine the "On-Off" cycle time of the glow plugs. A cycle time that is too long will
cause the plugs to burn out prematurely.
This condition is showing up after engine changes, which suggest that wires or connectors are being damaged. A quick system check can be made by
probing the wires at the thermal controller with a test light as outlined below:
1.
Cold engine, turn key on and probe the orange wire, the test light should cycle on and off with the glow plugs.
2.
Probe the brown wire, start the engine, generator output will cause the light to come on.
3.
Engine warm and not running, key on, and probe the brown wire. Current flow through the coolant temperature switch will cause the light to come
on.
