Question about Cars & Trucks
My husband and I have had 5 different friends (who are all mechanics) take a look at our A/C to try to figure out the problem so far this is what I know: 1. We do have airflow and the heater DOES work. 2. Our Freon levels are right where they are supposed to be. 3. There are no leaks that anyone could find in the hoses. 4. Our Freon USED to leak out about a year ago when we first got the car. When we first purchased our new/used car (at apx 85,000 miles) the A/C did work for apx one week. After that it stopped working but we could put cans of Freon into it and it would blow cold air for apx 2 days. We were able to continuing doing that for months (some A/C is better than none in Florida) then eventually the last time we tried to fill the Freon it read at a normal level but the air coming out was not cold. After that day we were not able to do the "Freon trick" anymore. 5. Four out Five mechanics said that the clutch on our compressor had froze up (or for some other reason or another our compressor wasn't working). That turned out not to be true as the last mechanic/friend who looked at it yesterday got the compressor moving, BUT the air STILL isn't cold and the Freon is still at the correct level. 6. Usually when we first turn on the car (or whenever it feels like it) a clicking noise comes from the center of the car right below the radio, it clicks several times very quickly and the A/C light flashes on and off, and the hot air blows out for a second stops then does it a few more times. Which makes no sense as our air is always turned to the OFF position because it doesn't work. Now that we've been told our compressor is OK I'm thinking (more like HOPING) that it's a relay problem somewhere with a fuse or something along those lines but I'm no mechanic and I know there are more parts to an A/C unit in a vehicle than I will probably ever be able to comprehend. That's why I'm desperately seeking help! As I said before we are living in FL and we have a 21 month old baby girl that has to ride around in this car and she gets so hot, I feel so bad for her. Please help us out if you can! Sincerely, Ashley
If everything is ok as you say then the problem will be a blocked tx valve in the evaporator. This valve controls the amount of liquid that is allowed to flow into the evaporator to turn to gas from the heat inside of the car and is allowed to be sucked by the compressor to be re-pressurised to liquid back in the condenser where the heat is exchanged to the air flow. In some cars it is set by the control knob in the dash and in others it is set to a constant flow and the cold is controlled by opening the heater up (climate control). By constantly filling with gas but not fixing the problem leaks that you have there has been contaminate introduced into the system that has now blocked the orifice in the TX valve . Replace it and you will be fine.
Posted on Jul 29, 2013
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Posted on Jan 02, 2017
Remove and raise upper hose at thermostat end and remove lower rad hose.
Fill rad with a hose and watch for flow from bottom rad hose and/ or bottom rad hose connecton.......water should fall though rad easily.
Honda rads are cheap.....any restriction....replace rad.
Remove thermostat....fill thermostat housing with hose and watch for water flow at bottom rad hose.
Remove heater hoses.......flush back and forth until a good flow is present "With heater control set to hot" if no or poor flow....replace heater core.
Stop leak can plug everything.
Also.......not likely causing over heating....but ....at your mileage,if you do not know if the timing belt has been changed.....CHANGE IT NOW!
Water pump is optional at this mileage.
Posted on Aug 24, 2009
Testimonial: "thank you for the very clear, step by step instructions for diagnose and remedy"
SOURCE: Cavalier A/C isn't working.,
If you see wet spots on the compressor it would be an indication that the compressor is bad, however buy a can or refrigerant with leak dye in it and see if you can see where the red dye is comming out and that will be your answer. Rather than guessing which one it is check it that way so you will know what it is then I can tell you how much to fix it.
Posted on Aug 28, 2009
If you have a leak on the system, the R134a refrigerant must be removed by a qualified HVAC technician. He can diagnose the problem more accurrately, then with the system evacuated, you decide wether to do the repairs yourself or let him do it.
If you decide to DIY, you can get a used compressor at the Junk Yard and the orifice tube filter and the Acumulator at the autoparts when you buy the R134a refrigerant and 6 ounces of oil for the A]C system. Ask the store clerk for your vehicle refrigerant capacity, do not overfill system.
Good Luck!! Don't forget to rate this post!!!
Posted on Aug 22, 2010
The Jaguar XK8 has a coolant hose on the rear of the engine that is prone to leaking. The leak is typically on the right side, right above the catalytic converter. There is a quick disconnect fitting that has an o-ring in it. This O-ring fails with age, and the coolant leaks from the connector.
Posted on May 03, 2012
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