Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: Higher pressure on low side than suggested. new compressor, not overfilled. on 2004 Ford Freestar

Warm air drivers side, cooler air passenger side & back.
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more

1. Verify the proper system charge first. Without auxiliary air the charge specification is 36 oz, with auxiliary air the charge specification is 53 oz. Also verify the system is charged with non-contaminated R-134a.

2. If the system charge is correct, start the engine and let the A/C compressor run. Using a non contact temperature gun or by hand, check for any temperature difference in any of the lines that would indicate a restriction in the system. Once found, check for a restricted line, or excess oil if the restriction is found to be at the accumulator, evaporator, or condenser. Address the restriction as needed and recheck operation.
Didn't find what you were looking for?