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 DIAGNOSISMAINTENANCEFLUIDSREFRIGERANTTECHNICAL SERVICE BULLETINSA/C - IDENTIFICATION OF NON APPROVED REFRIGERANTSRECOVERY OF CONTAMINATED REFRIGERANT
1990 Ford Ranger 4WD L4-140 2.3L SOHC
Recovery of Contaminated Refrigerant
1990 Ford Ranger 4WD L4-140 2.3L SOHCSECTION Recovery of Contaminated Refrigerant
If contaminated refrigerant is detected, DO NOT recover the refrigerant into your R-134a or R-12 recovery/recycling equipment. Take the following actions:
1. Repeat the test to verify contaminated refrigerant is present.
2. Advise the customer of the contaminated A/C system and any additional cost to repair the system. The customer may wish to return to the service facility which performed the last A/C service.
3. Recover the contaminated refrigerant using suitable recovery-only equipment designed for capturing and storing contaminated refrigerant. This equipment must only be used to recover contaminated refrigerant to prevent the spread to other vehicles. As an alternative, contact an A/C service facility in your area which has the proper equipment for refrigerant recovery.
1. Repeat the test to verify contaminated refrigerant is present.
2. Advise the customer of the contaminated A/C system and any additional cost to repair the system. The customer may wish to return to the service facility which performed the last A/C service.
3. Recover the contaminated refrigerant using suitable recovery-only equipment designed for capturing and storing contaminated refrigerant. This equipment must only be used to recover contaminated refrigerant to prevent the spread to other vehicles. As an alternative, contact an A/C service facility in your area which has the proper equipment for refrigerant recovery.
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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.