A/C Relay Location on 99' F350 PSD

[Jim 99 PS]

My A/C has a good charge but turns off after running for 20 minutes, then comes back on in 10 minutes and just does this as long as it is on, I assume the relay is bad but I can not find the A/C relay.

Can someone tell me where the relay is?

Has anyone ever had this problem before?

[Jim 99 PS]

Anyone have any ideas on the relay location?

[mike24]

there is no relay. what you want to check when ac quits working you want to see what your pressures are reading. you could be dealing with just a bad connection or you could be dealing with you orfice tube be plugged causeing high pressure.

[Jim 99 PS]

Thanks for responding. I will check my pressure and pressure sensors etc.

[el conquistador]

my a/c pressure sensor on the compressor was bad,so i replaced that, but the connector seems to be somewhat loose so my compressor clutch won't kick on and blow cold air unless i jiggle the wire or zip tie it just right. other than that, it's some dang cold air. so i know the charge is good.

[slosvo]

it could also be excessive compressor clutch gap... should be about .20 or so i believe.. like the thickness of two business cards... next time the a/c isn't running tap on the clutch quickly witht the engine running and see it it engages..also if that does work give the pressure switch, on the accumulator a lil love tap...