99 F150 air conditionr air conditioner blows fine but blows cold air for a few seconds then hot and cannot get it to cold again unless motor is killed then does same thing

Asked by Jun 03, 2017 at 09:31 AM about the Ford F-150

Question type: Maintenance & Repair

1 Answer

15,425

Sounds like a low charge condition. Low pressure safety may be disabling the compressor due to low refrigerant. For a 99, seals may be failing and losing system charge which is pretty typical. They sell gauge kits at any automotive store to check pressures. You're probably going to need a few cans of 134A refrigerant and a seal conditioner.

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