
Your car or truck's AC system is under extreme pressure and the thermal expansion valve or orifice tube monitors the amount of pressure and the temperature of your A/C system. It calculates the precise amount of refrigerant that can safely go into the evaporator. A failing expansion valve or orifice tube often causes a vehicle's air conditioner to blow hot air.
Replace or Repair
- Expansion Valves: Too much refrigerant causes your evaporator to get too cold whereas too little refrigerant would result in inadequate cooling. The expansion valve is a complex valve that regulates refrigerant flow. This process of metering the refrigerant adjusts the flow according to the temperature of the refrigerant in the evaporator coil. Talk to one of the pro mechanics at Niel's Auto Service, as this part can be replaced on its own and does not require the entire replacement of the AC assembly.
- Orifice Tubes: Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen. Often fixing a "bad orifice tube" requires replacing the entire evaporator assembly.
What our clients are saying about us
We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!
Neil helped me 1 1/2yrs ago when I had major delema. My 2021 Toyota Corolla SE Nightshade that I had lease on had major damage from rats getting into engine compartment. Water resivior had big holes,several pieces of wiring harness were gone and I took it to Simi Valley Toyota (my leaser who helped me finance a wonderful car). One of the service guys we will leave name out gave me a quote of just over $9000.00. I was very devastated especially just lost my wonderful job. Now I know plenty about cars there engines and rest but, I think this service guy took me for a stupid woman. So I towed it back to my house covered it and figure that was it till lease is up. My neighbor across street gave me neils automotive in Moorpark. OMG he is the nicest guy. Doesn't cheat you and respects you. Needless to say everything fixed for just over $300. When I purchase another vehicle he will be my only service guy

If you need a great mechanic in Moorpark, this is where you should go no doubt in my mind
