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March 1, 2000 Service bulletin

Some vehicles built through 11/22/99 and equipped with 4.0L sohc engine may exhibit various driveability...

Ford technical service bulletin 8420 for 1999-2000 Ford Explorer and 1999-2000 Mercury Mountaineer.

Bulletin number
8420
Component
Engine and engine cooling: exhaust system
Summary
Some vehicles built through 11/22/99 and equipped with 4.0l sohc engine may exhibit various driveability conditions that lead to idle air control (iac) valve replacement. Tt

Owners of these vehicles have filed 223 complaints in the engine category.

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