E 350 Van V8-7.3L DSL Turbo VIN F (1995)
Air Injection Muffler: All Technical Service Bulletins
Thermactor System - Buzzing Noise
Article No.
95-9-9
05/08/95
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THERMACTOR SYSTEM - "BUZZING" - 25-40 MPH IN 2ND OR 3RD GEAR - OPERATING IN DUMP MODE - 1994 VEHICLES WITH
5.8L ENGINE AND 50 STATE CALIBRATION - 1995 VEHICLES WITH 5.8L ENGINE AND 49 STATE CALIBRATION ONLY
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NOISE - "BUZZING" - 25-40 MPH IN 2ND OR 3RD GEAR - THERMACTOR SYSTEM OPERATING IN DUMP MODE - 1994 VEHICLES
WITH 5.8L ENGINE AND 50 STATE CALIBRATION - 1995 VEHICLES WITH 5.8L ENGINE AND 49 STATE CALIBRATION ONLY
LIGHT TRUCK:
1994-95 E-350
ISSUE:
A "buzzing" noise may be heard between 25-40 mph while in 2nd or 3rd gear. This may be caused by air flow through the thermactor system during
operation in dump mode.
ACTION:
Replace the air supply bypass valve hose with a cap on the intake air duct and install a thermactor silencer and bracket assembly. Refer to the following
Service Procedure for details.
SERVICE PROCEDURE
1.
Remove the air dump hose which connects the thermactor bypass valve to the fresh air intake air duct.
2.
Cap the open nipple on the intake air duct with a Rubber Cap (C6AZ-9486-A). No clamps are necessary.
