Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1990RANGER 4WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSCAMPAIGN - RUNNING LIGHT MODULE, EXTENDED COVERAGEOVERVIEW
1990 Ford Ranger 4WD L4-140 2.3L SOHC
Campaign - Running Light Module, Extended Coverage: Overview
1990 Ford Ranger 4WD L4-140 2.3L SOHCSECTION Overview
92M78
OWNER NOTIFICATION PROGRAM
Extended Coverage of Daytime Running Lights Module on Certain 1989-91 Vehicles
Dealer Letter
Attachment I
^ Administrative Information
^ Refunds
Attachment II
^ Labor Allowances Information
^ Parts Ordering Information
Attachment III
^ Technical Instructions
^ Daytime Running Lamp Module Locations
Customer Notification Letter
OWNER NOTIFICATION PROGRAM
Extended Coverage of Daytime Running Lights Module on Certain 1989-91 Vehicles
Dealer Letter
Attachment I
^ Administrative Information
^ Refunds
Attachment II
^ Labor Allowances Information
^ Parts Ordering Information
Attachment III
^ Technical Instructions
^ Daytime Running Lamp Module Locations
Customer Notification Letter
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.