Hey guys,
I’m hoping you can help. I have a 2000 GMC Jimmy SLT.
My AC hasn’t been working for some time, but with the hot summer temperatures hitting me in Florida I decided it was time to get it going.
The system was entirely out of freon so I put a light charge in and then used a leak detector, where I diagnosed that the compressor was leaking substantially.
I then proceeded to replace the compressor, condenser, orifice tube and accumulator. I also flushed all the lines and the evaporator.
I noticed that the wires on the back of the high pressure sensor located behind the compressor were pretty frayed and had some corrosion on them. I bought a new connector, cut off the freyed wires, and then spliced the new connector wires to them.
I pulled a vacuum for 40 minutes to remove air/moisture from the system. I then let the vehicle sit for another 45 minutes, and it held the vacuum the entire time. I proceeded to re-charge with 28oz of r134a.
During charging, the compressor clutch turned on and off repeatedly. However, at the end of the charge, the clutch would not turn on at all.
I jumpered the clutch at the relay and the clutch would come on when jumpered. I then proceeded to replace the pressure switch at the accumulator, but that didn’t make a difference.
I also tried swapping the relay with the horn relay, and also no difference. I took a look at the fuses and they looked OK. I also verified that the AC controls were on full blast with the AC light illuminated inside.
Any ideas/next steps? Photo of my gauges taken when the relay was jumpered are attached. Temperature outside today is 86 degrees.
I appreciate your help!
I’m hoping you can help. I have a 2000 GMC Jimmy SLT.
My AC hasn’t been working for some time, but with the hot summer temperatures hitting me in Florida I decided it was time to get it going.
The system was entirely out of freon so I put a light charge in and then used a leak detector, where I diagnosed that the compressor was leaking substantially.
I then proceeded to replace the compressor, condenser, orifice tube and accumulator. I also flushed all the lines and the evaporator.
I noticed that the wires on the back of the high pressure sensor located behind the compressor were pretty frayed and had some corrosion on them. I bought a new connector, cut off the freyed wires, and then spliced the new connector wires to them.
I pulled a vacuum for 40 minutes to remove air/moisture from the system. I then let the vehicle sit for another 45 minutes, and it held the vacuum the entire time. I proceeded to re-charge with 28oz of r134a.
During charging, the compressor clutch turned on and off repeatedly. However, at the end of the charge, the clutch would not turn on at all.
I jumpered the clutch at the relay and the clutch would come on when jumpered. I then proceeded to replace the pressure switch at the accumulator, but that didn’t make a difference.
I also tried swapping the relay with the horn relay, and also no difference. I took a look at the fuses and they looked OK. I also verified that the AC controls were on full blast with the AC light illuminated inside.
Any ideas/next steps? Photo of my gauges taken when the relay was jumpered are attached. Temperature outside today is 86 degrees.
I appreciate your help!
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