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Should be a threaded flared fitting
Replace the fitting.
The 2003 Chevrolet trailblazer air conditioning line can be found on the air conditioning compressor. The line goes from the compressor to the firewall. The line will go through the firewall to the air conditioner core.
the low pressure line is always the biggest diameter line hooked to the compressor. should be a fitting that looks like a valve stem on that line.
The suction line will be the larger line going into the compressor.
look under your hood find your a/c compressor and trace your biggest line from the compressor to the port in that line.
The 1990 Mitsubishi does not have an air conditioning recharge line. The vehicle has an air conditioning recharge port. You can recharge your air conditioning system through the low pressure port on the air conditioning compressor.
On the line right at the compressor.
Larger line from A/C compressor is the low pressure line
The low pressure Is the line from the evaporator or the interior compartment to the compressor . Also Known as the suction Line. Alot of times it is recognised by a BLUE cap on the fitting. Caution be sure that you do not get confused with the line from the compressor to the Condensor located in front of the raditor. Not a difficult fitting to locate. Hope this helps . Ron
The 2002 Subaru air conditioning drain line can be found on the bottom of the air conditioner compressor. The air conditioning drain line routes condensation to the bottom of the engine compartment.
if you are referring to the a/c lines just trace the biggest line from the back of your compressor to the fitting and that's your low side port.