The air conditioning hadn’t worked for several years. Around 2011, I replaced all the hoses and recharged the system with R12, which kept it working reliably for a few years. More recently, however, it became intermittent and eventually stopped working altogether. Suspecting a refrigerant leak, I borrowed AC gauges to check the system pressures. While tracing the circuit, I discovered the issue pointed to the low-pressure switch. When I bypassed the switch, the compressor engaged, confirming the switch was likely faulty. I purchased a replacement switch:
After some more troubleshooting, and some help from Delorean Midwest, the replacement switch worked!
Costs:
| Item | Purchase Date | Vendor | Quantity | Cost | Shipping | Tax | Total |
| Low Pressure Switch | 6/28/2023 | Delorean Midwest | 1 | $ 11.57 | $ – | $ 11.57 | |
| O Ring | 6/28/2023 | Delorean Midwest | 1 | $ 0.29 | $ – | $ 0.29 | |
| $ 0.92 | $ 12.78 |