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 MANUALSJEEP1991CHEROKEE 2WD L4-150 2.5L VIN P MFIREPAIR AND DIAGNOSISMAINTENANCEFLUIDSREFRIGERANT OILSERVICE AND REPAIROIL CHARGE ADDITIONS
1991 Jeep Cherokee 2WD L4-150 2.5L VIN P MFI
Oil Charge Additions
1991 Jeep Cherokee 2WD L4-150 2.5L VIN P MFISECTION Oil Charge Additions
Compressor oil level should be checked whenever the A/C system is discharged for repair or due to a malfunction. To ensure proper oil level after system service, proceed as follows:
1. Discharge system and repair as needed. If compressor is replaced, ensure that oil level in replacement compressor is the same as the oil level in the defective compressor. If the evaporator or condenser is replaced, add 1 ounce of oil to each component prior to installation.
2. Evacuate and recharge system, then operate A/C until pressure gauge readings stabilize (approximately 10 minutes.)
3. Stop engine and perform oil level check, refer to Heating and Air Conditioning/Air Conditioning Compressor/Compressor Oil/Service and Repair.
1. Discharge system and repair as needed. If compressor is replaced, ensure that oil level in replacement compressor is the same as the oil level in the defective compressor. If the evaporator or condenser is replaced, add 1 ounce of oil to each component prior to installation.
2. Evacuate and recharge system, then operate A/C until pressure gauge readings stabilize (approximately 10 minutes.)
3. Stop engine and perform oil level check, refer to Heating and Air Conditioning/Air Conditioning Compressor/Compressor Oil/Service and Repair.
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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.