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Chris (aka-Moose)
Chris (aka-Moose), Auto Technician
Category: Toyota
Satisfied Customers: 901
Experience:  16 years of experience
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Toyota Tacoma: My 1997 Tacoma has a very high psi ( 300) on

Customer Question

My 1997 Tacoma has a very high psi ( 300) on the high side. Low side at 40. A/C still blows cold air. Hopefully it won't blow a hose.
Submitted: 2 years ago.
Category: Toyota
Expert:  Ted Ritter replied 2 years ago.
Thanks for postingExtremely high pressure on the high side can be due to an overcharged system, did you evacuate and put in the recommended amount of Freon? that would be my first step, if the Freon level is ok then the problem may be a clogged expansion valve, high pressure on the high side is normally due to a restriction on the high side before going to the low side and that point is the expansion valve.
Customer: replied 2 years ago.
Thank you for your help. Now how hard is it to change out an expansion valve on a1997 Toyota Tacoma?
Expert:  Ted Ritter replied 2 years ago.
Kind of involved, the heater housing has to be removed then the evaporator housing, then the housing has to be opened up because the expansion valve is located in the evaporator housing, normally about a six hour job