Question about Cars & Trucks
My air condition in my suburban intermittently stopped blowing cold air. I checked the refrigerant pressure and it was good. I even added a little R134a to make sure the pressure was at the max. When I disconnect the wire harness from the low pressure switch (in the side of the evaporator) and jumper across it, the A/C works great (of course the compressor runs all the time). Is this a bad pressure switch or could it be something else? Do you have to evac the system to replace the pressure switch?
Posted by Anonymous on
I would change the pressure switch and it just turns in and out and it won't loose R134a. The one switch should be on the dryer bottle with two wires plug.
Posted on May 22, 2017
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Posted on Jan 02, 2017
SOURCE: Dodge Ram AC not blowing cold
By pass both pressure switches one at a time with small wire or a paper clip. If comperssor kicks on replace the swich that you bypassed.
if not it could be the fan clutch ot the compressor. Compressor runs about $400.00
Posted on Jun 23, 2009
SOURCE: lincoln climate control
Found the fix on another forum - replace the AC clutch relay in the
power distribution box under the hood.
This has worked for at least two people with this exact problem so far.
Posted on Jun 10, 2010
SOURCE: I have a 2003 Nissan
105 psi? If so that is way to hi...especially for a mid-sized car. You ideally want you pressure to be between 40-50 psi. If you pressure is that hi you might have blown the pressure valve on you compressor, which is not a part that is sold seperately. You should take your car to your local Pep Boys and have them run a A/C diagnostic which runs around $45 to give you an better idea. If you don't know what you're doinf the A/C system is not something you want to play a guessing game with. Especially since it's illegal to work on it without the proper tools and licenses.
Posted on Dec 08, 2010
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