FelixOP90
Enthusiast
The AC in my car worked when I first bought it at the start of the year but then overtime it leaked out all of the gas. I had it recharged with the dye added and it was clear the compressor was leaking like a sieve. I couldn't detect any dye elsewhere.
I bought a new compressor, I wanted a Denso but it was on backorder to UK compared with the UAC unit from Rockauto and with the unusually hot weather wanted to sort it out sooner. I was able to remove the PAS pump from the bracket and swing it out of the way to then remove the compressor. The new one was prefilled with oil, turned by hand and so I fitted it. Got the system vacuumed for 30mins x2 then refilled. However it's blowing the 15a AC fuse immediately when AC is turned on. I have tried unplugging the compressor, fuse doesn't blow and car idle increases as if AC will come on.
The wiring on the new compressor is red/black whereas the loom is blue-black. The connector will only fit one way which results in black->red and blue ->black when connecting the compressor.
I have the factory manuals for a 99 but couldn't see more details on the AC wiring. I have swapped the AC relay with the horn relay and it works fine. My uneducated thought is the coil is dead on the new AC compressor. Is the wiring sensitive to polarity? It's frustating to have the system vacuumed out again and lose the cost of the regas. Likewise rockauto will not process a refund as I didn't purchase a drier and expansion valve at the same time. Could I swap the coil and clutch of the OEM compressor onto the UAC one? Or cut my losses and just buy the Denso one? The old compressor turned freely and looked fine inside.
Thanks in advance for any guidance!
I bought a new compressor, I wanted a Denso but it was on backorder to UK compared with the UAC unit from Rockauto and with the unusually hot weather wanted to sort it out sooner. I was able to remove the PAS pump from the bracket and swing it out of the way to then remove the compressor. The new one was prefilled with oil, turned by hand and so I fitted it. Got the system vacuumed for 30mins x2 then refilled. However it's blowing the 15a AC fuse immediately when AC is turned on. I have tried unplugging the compressor, fuse doesn't blow and car idle increases as if AC will come on.
The wiring on the new compressor is red/black whereas the loom is blue-black. The connector will only fit one way which results in black->red and blue ->black when connecting the compressor.
I have the factory manuals for a 99 but couldn't see more details on the AC wiring. I have swapped the AC relay with the horn relay and it works fine. My uneducated thought is the coil is dead on the new AC compressor. Is the wiring sensitive to polarity? It's frustating to have the system vacuumed out again and lose the cost of the regas. Likewise rockauto will not process a refund as I didn't purchase a drier and expansion valve at the same time. Could I swap the coil and clutch of the OEM compressor onto the UAC one? Or cut my losses and just buy the Denso one? The old compressor turned freely and looked fine inside.
Thanks in advance for any guidance!
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