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TSB
01-20-1
  • IDLE - HIGH IDLE AFTER STEADY STATE DRIVING IN EXTREME COLD AMBIENT TEMPERATURES - VEHICLES EQUIPPED WITH 4.2L ENGINE BUILT THROUGH 1/24/2000
  • ENGINE - 4.2L - PCV SYSTEM ICING - AFTER STEADY STATE DRIVING IN EXTREME COLD AMBIENT TEMPERATURES - VEHICLES EQUIPPED WITH 4.2L ENGINE BUILT THROUGH 1/24/2000
Publication Date: SEPTEMBER 28, 2001

FORD:
1997-2000 F-150

ISSUE:

Some of the vehicles produced through 11/13/1996 identified in this TSB article should have been serviced under recall 97S96 or 98R04. Vehicles produced after 11/13/1996 have production level coolant heated fittings in the Upper Intake. In those extreme cases where throttle body icing due to PCV backflow is not completely eliminated, a new designed heated PCV valve has been developed that will make these vehicles even less susceptible to PCV freezing and the possibility of throttle body icing.

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