Colt L4-1597cc 1.6L SOHC Turbo (1985)
Voltage Regulator: All Technical Service Bulletins
Radio - Rapid Crackling Noise in FM Mode
Models
All 1985 Carbureted Vehicles (Except 2.6L Engine) Equipped . With AM/FM Stereo Radio (Sales Code RAL, RAN, or RAY)
Subject
FM Radio Noise Induced by Electronic Voltage Regulator
Index
ELECTRICAL
Date
April 1, 1985
No..
08-09-85
SYMPTOM/CONDITION
Vehicle may exhibit radio interference in the FM mode, best described as a "rapid cracking noise." Intensity may be high or low. It is not a whine or
static noise.
DIAGNOSIS
This condition only applies to subject vehicles built on or before December 21, 1984 MDH 12-12-XX.
Check with hood closed and engine running slightly above idle in park or neutral. Tune to weak FM station (prefer using station customer listens to).
Switch off all other electrical loads.
If noise is heard, have someone disconnect electronic voltage regulator and close the hood. If noise is eliminated, replace electronic voltage regulator
with PN 4379100.
POLICY:
Reimbursable within the provisions of the warranty
TIME ALLOWANCE:
Labor Operation No.
08-20-10-01 FWD . . . . . . . . .
0.2 Hrs.
08-20-10-05 RWD . . . . . . . . .
0.2 Hrs.
FAILURE CODE:
58 - Internal Defect
