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Isuzu Trooper A/C Problem
Please Help!! I have a 1995 Isuzu trooper and the AC dosen't work at all. I have tried a lot of different things and paid a shop $600.00 to fix it but it still dose not work. Here is what I have done.
1.) Replaced the Condenser
2.) Replaced the receiver/drier
3.) Vacuumed out lines
4.) refilled with coolant and leak sealer w/ oil
My system has a slow leak somewhere(A shop couldn't find it with a feeler gauge) but the leak is very small. I have a pressure gauge that I bought from Autozone and when I fill the lines with coolant the system says that it is at the proper pressure. The blower works but the air that is coming out is semi-cool at best. I was thinking the problem could be with the evaporator but that is a guess. The only other part I haven't messed with is the compressor but I would think if the gauge says its at the correct pressure it should be ok. Any ideas? Thanks!!
1.) Replaced the Condenser
2.) Replaced the receiver/drier
3.) Vacuumed out lines
4.) refilled with coolant and leak sealer w/ oil
My system has a slow leak somewhere(A shop couldn't find it with a feeler gauge) but the leak is very small. I have a pressure gauge that I bought from Autozone and when I fill the lines with coolant the system says that it is at the proper pressure. The blower works but the air that is coming out is semi-cool at best. I was thinking the problem could be with the evaporator but that is a guess. The only other part I haven't messed with is the compressor but I would think if the gauge says its at the correct pressure it should be ok. Any ideas? Thanks!!
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Comments
Anyway, You need to determine exactly what you have now after the work you have done. How much refrigerant did you install, was it the right refrigerant, Is there around 80# in the lines at rest? If there is, then system is holding pressure. If the compressor is running and you find no frosted lines at receiver\dryer or coming from the evaporator, then possible compressor seal problem. You need dual gauges to check compressor; when you turn off AC, if the pressure equalizes rapidly (withing a few seconds, then comp seal is bad and compressor is usually replaced). If with dual guages you have very high pressure on condenser side (300#+), then possible expansion valve problems. AC is a difficult area to diagnose. Eliminate the basic causes like low or no pressure, leaking o rings at joints, dirty condenser, bad dryer and then the big ticket items like compressor or expansion valve are all that are left, IMO!
Hope this helps.