phillip allan

my ac quit blowing cold. i had it at work and they said the open throttle switch is stuck open not allowing the compressor to kick on. they still gotta look more into it, saying it could also b a bad pcm. has anyone had this same type of problem?

00gstang

few possibile problems:

1. system is low on r134a
2. a/c cycle switch is bad
3. compressor is bad

I would start by refilling the system with r134

phillip allan

it has freon. compressor is 1 year old, but could b bad. may just replace the cycle switch anyways.

Corey Bien

Does the clutch pull in?

phillip allan

no. i was told theres an open throttle switch that doesnt engage the compressor when the truck is at full open throttle. the ots is stuck open.

Corey Bien

That's what I was going to recommend. Just had a friend with a Lincoln with the same problem

clark3

Yep thats your problem

phillip allan

so theres an actual switch/sensor i need to replace then.

phillip allan

so i had the my truck in the shop at work and they couldnt find anything at first. after 3 weeks i decicde to check relays and fuses and found a blown fuse. i replaced it and ac now works. simple fix that a mechanic at work didt see.