Question about 2001 Toyota Celica

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Toyota celica, air conditioner will not work, evac done and recharged, nothing, changed out low pressure switch and still nothing. switch on dash blinks when you press it, compressor tries to come but cuts out. What could I try next, is this computer problem

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Weird, usually the pressure cut out switch, if you manually "bridge" this (only briefly say 4 secs) the a/c should work, sometimes a plugged/blocked condensor or evaparator will cause this . Also look at engine related temp switches, example water, as these are designed to overide and turn off the ac if the car gets too hot etc.
1)Bridge switch
2) ? oil level in compressor (seized??)
3) temp switches,
4)double check that the system is not blocked, coz if it is then the compressor will only go briefly and then stop due to "overpressure"

Posted on Aug 08, 2009

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Your AC system has a leak and can come from many areas within the system. A pressure test done with the correct gauges will find this leak. Freon in the AC system does not disappear, unless it has a way to escape. Low or no freon will cause this issue and your cabin filter will not cause this issue.

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You are bypassing the safety mechanism built in to prevent compressor damage. You either have one of two conditions, You truly have a low pressure condition(menaing you need an evac and recharge(fill the system with r134a gas) or a bad pressure switch. The switches are inexpensive replacing it will cost less than the charge to diagnose it, as such i would have it evacuated change the switch then have it recharged and a UV die added in so any other potential leaks can be found

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Freon is not full. If it goes back and fourth it is pumping then reaching a low pressure on the low side below 35 psi. Pressure while car is off should be pegged. Check at idle should be around 50 psi and 35 psi at 2000 rpms.

Good luck. If problem persists evac system replace dryer and recharge.

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My a/c in my 2001 toyota celica is not working


I believe the a/c light flashes on toyota products when the low pressure switch is activated due to the system being low on refrigerant. You should have the system checked and provided it is just low on refrigerant; the a/c will work once the proper level of freon is added and enough pressure has built up to turn off the low pressure cut off switch.

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Look at the hoses on the back of the a/c compr.. there will be a big and a thin hose, the big hose is the lower pressure hose, that's the one you want to recharge your a/c system, stay away from the thin that one is high pressure, follow the big hose, on it you will find the port to recharge the a/c system.

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I want to recharge the airconditioner, but the computer in the dash states refregerent to low compresser shut off! how do I turn on?


Add freon if not done yet, disconnect battery for 5mim, should reset, if it don't reset after disconnecting battery, your low pressure switch's are bad, that happens about 50% of the time when freon get's low. the low switch's are located on a very thin a/c line that run's along the top of the fire wall, there will be two about 12" to 18" apart, on the same a/c line, recover freon before removing switch's, install new one's evac a/c system and recharge with 2lbs of freon, hope this was very helpful.

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1996 toyota tercel air conditioner will not work


Hello, and welcome to FixYa. Let us try to help.

Yes, you read correctly; if the refrigerant charge is low,or the refrigerant has leaked out, the AC compressor will not activate. Pressure switches built into the system inturupt the power to the AC clutch if there is insufficient system pressure.

I would suggest taking the vehicle to a qualified garage, and have the service tech there hook his set of 'AC Gauges" to the car. After he does that, he can tell you if you need a partial charge, of if you system is empty. I would def recommend the car be checked with the AC gauges; as adding refrigerant to the system without knowing how much is currently in it can damage the compressor.

Thanks for choosing FixYa for advice!

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Pressure fitting in 1990 Toyota Celica engine compartment


most likelly is for the air conditioning recharge service valve
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