Idle Fuel Mixture - Manual Revision: Overview

89Ford19

ENGINE EMISSIONS DIAGNOSIS SHOP MANUAL- 1986-SECTION 4-IDLE FUEL MIXTURE-PROPANE ENRICHMENT METHOD

ENGINE EMISSIONS DIAGNOSIS SHOP MANUAL- 1987-SECTION 4-IDLE FUEL MIXTURE-PROPANE ENRICHMENT METHOD

Article No. 89-12A-26

FORD: 1986 ESCORT, LTD, MUSTANG 1986-87 TEMPO 1986 THUNDERBIRD

LINCOLN-MERCURY: 1986 CAPRI, COUGAR, MARQUIS 1986-87 TOPAZ

LIGHT TRUCK: 1986 AEROSTAR 1986-87 BRONCO, ECONOLINE, F-150, F-250, F-350, RANGER

ISSUE: The tachometer reference "or equivalent" as shown in procedure I.-B in both 1986 and 1987 Engine Emissions Diagnosis Manuals is incorrect. This also applies to procedure I.-H in the 1986 Engine Emissions Diagnosis Manual.

ACTION: Refer to the pages following this TSB article for the revised Volume H pages which show the correct tachometer designation as: "Connect an analog tachometer, Rotunda 059-000010 or an equivalent analog tachometer." This information should be inserted in your 1986 Engine Emissions Diagnosis Manual, pages 4-83, 4-87, 4-90, 4-93 and the 1987 Manual, pages 4-66 and 4-69.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 680000