A/C issues......
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Junior User
Joined: Feb 2006
Posts: 76
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A/C issues......
I have an 94 F250 XL with 5.8 motor, with auto tranny with overdrive. 250K + mileage.
AC doesn't or cycle or "click". Checked the fuses, no blown fuses. Could it be a relay that failed? And where in the world is the relay box? Bought a Haynes manual, doesn't help find the relay box or troubleshoot the problem. So I ask for your advice and direction. Thanks.
AC doesn't or cycle or "click". Checked the fuses, no blown fuses. Could it be a relay that failed? And where in the world is the relay box? Bought a Haynes manual, doesn't help find the relay box or troubleshoot the problem. So I ask for your advice and direction. Thanks.
Freshman User
Joined: Apr 2009
Posts: 28
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From: Fayetteville NC
Relays seldon go bad. I'd check your freon charge. Most of the low pressure switches cut out arouind 20 psi. Get a set of gauges, you can get them at a autoparts store. If you carry your truck and get the A/C checked they will bust you for big money. A set of gauges will cost you about 100 busks but you can use them again and again.
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Junior User
Joined: Feb 2006
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I guess I can get one of these recharge kits from Autozone, Kragen or NAPA. I need to know where is "high side" to install r-134. Please advise. Thanks.
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Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
The Low side fitting is near the heater box area.
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Fleet Owner
Joined: Jan 2008
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From: southern md
I agree with subford on this one -never try to charge the high pressure side-i saw one guy try it one time-he would not listen to me -as i quickly walked away-yeah it's near the heater box-and there should be a plug in type connection into the line close to the inlet valve-sometimes if it's really low you may have to use a wire to jump the low pressure switch-well i do at times-just speeds up the process-till the compressor will kick in on it's own
Fleet Owner
Joined: Jan 2008
Posts: 26,898
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From: southern md
and the hook ups are totaly different fron the two
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
In auto shop 101 did you pump down and recharge an auto A/C system?
If you do not know what you are doing you could cause more problems to the A/C system and when you take it in it will cost a lot more money then it would now.
And yes most but not all the time the high side is by the radiator as the condenser is on the high side.