A/C help please?
A/C help please? Looking for some opions...
OK ...98 TA and of course its not blowing out cold air but cool.
So with the A/C gauges hooked up
Car not running outside temp 80*F Low side gauge 85 High Side 85
Start the car A/C on Max .. Car idles for 10 min
Bring the idle to 1500 ( A/C still on max )
Low side 100 High side 105 ( with the cooling fan kicked on )
Low side 105 High side 110 ( with the cooling fan Off )
The Temp out of the center vent is 57*F
I notice the A/C clutch is engauged , but it is not Dis engauging
So what do youguys think my be the problem
A/C Clutch
A/C Compressor
A/C Accumulator/Drier
Thx for the imput guys.....
OK ...98 TA and of course its not blowing out cold air but cool.
So with the A/C gauges hooked up
Car not running outside temp 80*F Low side gauge 85 High Side 85
Start the car A/C on Max .. Car idles for 10 min
Bring the idle to 1500 ( A/C still on max )
Low side 100 High side 105 ( with the cooling fan kicked on )
Low side 105 High side 110 ( with the cooling fan Off )
The Temp out of the center vent is 57*F
I notice the A/C clutch is engauged , but it is not Dis engauging
So what do youguys think my be the problem
A/C Clutch
A/C Compressor
A/C Accumulator/Drier
Thx for the imput guys.....
TECH Regular
Joined: Aug 2010
Posts: 462
Likes: 0
From: houston, texas
those pressures cant be right. your low side should be 15-35 and the high side should be 225-300. they will vary on both sides due to numerous factors. if the clutch is engaged and the pressures are what you are showing i would think the compressor is not pumping. if the orifice tube was plugged up the low side would be pulling a vacuum and the high side would be really high 350+
feel the liquid line from the condensor to the orifice tube just before the liquid line goes into the firewall. where the o-tube is you should feel a big temperature difference warm/hottish to cold. and feel the return line from the evaporator behind the firewall going to the accumulator, that should be cold and have condensation all over it. if the return line is warm, then that's a good sign the system is low on refrigerant. charge the system and monitor your pressures, high side should climb and be around 200-250psi for an 80F day. low side pressure should be between 25-45 psi. if that does not start to happen when you charge the system, you have a bad compressor.
i know the high side pressure switch is easily visible, it's on the small diameter liquid line and has the sensor with two electrical wires coming out of it. I don't remember seeing a low side sensor, if there is one it has to be somewhere on the return and would be between the accumulator and compressor if not built in or on the compressor.
i know the high side pressure switch is easily visible, it's on the small diameter liquid line and has the sensor with two electrical wires coming out of it. I don't remember seeing a low side sensor, if there is one it has to be somewhere on the return and would be between the accumulator and compressor if not built in or on the compressor.
