Thermactor Divertor Valve - Poor Fuel Economy

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Article No. 83-20-16


FUEL ECONOMY (2.0L/2.3L) - VEHICLES BUILT JOB 1 1983 TO NOVEMBER 1983


LIGHT TRUCKS 1983 RANGER

Poor fuel economy may relate to a malfunctioning thermactor diverter valve (9F491). Thermactor air being diverted upstream during stabilized drive modes will adversely affect vehicle fuel economy. Perform an MCU self-test and pinpoint tests 10, 11 or 12, Section 16, where applicable from the 1983 Truck Engine Emissions Diagnosis Manual. If the diverter valve is not functioning as required, replace it with the parts listed below.


PART NUMBER PART NAME CLASS

E3TZ-9F491-A Thermactor Diverter Valve C


OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION/TIME: Refer to the Labor Time Standards Manual for applicable operation and time.
DLR. CODING: Basic Part No. 9F491 Code: 41