Question about 1991 Toyota Camry

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I need to replace my expansion valve

I just want to find some instruction tutorial or guide that I can reference so I can do the job myself.

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  • A Miller May 31, 2010

    what is an expansion valve?

  • kyokhan May 31, 2010

    google can clarify what an expansion valve is. its an element involved with the AC and if broken, the AC won't work. I have a new one and want to install it myself.



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My friend, your question did not contain many of the elements that it should have. I shouldn't have to ask you what your question means ... you could have made that clear from the outset. Had you said "Im working on my car AC and I need help with the expansion valve ..." I would have been on the same sheet of paper with you immediately ... If YOU google 'expansion valve', you would see there are more than 1,220,000 hits ... if you think I am inclined to go through that to see if I can qualify your question ... well my friend ... think again.

Now that I have wasted all that energy ... I must say if you are a USA or Canada resident, for you to do this yourself, you must hold a special AC license and have special freon recovery equipment to do this job yourself. There are other special tools required as well ... are you so qualified? If you don't have this equipment and license, you can't legally purchase the materials and supplies required. If it turns out that you do obtain it ... through some means ... someone else has put their license in jeopardy not to mention taking work from a qualified mechanic who could do this job for you.

So to answer your question, I suggest you take the ASE certificataion classes concerning auto Air Conditioning ... that will guide you through the process you must follow to do this job yourself. Here is the link for additional information:

Thank you for your interest in

Posted on Jun 01, 2010

  • A Miller Jun 04, 2010

    Thank you for the 4 thumbs up rating for my response. Good luck with your training and ultimate repair.

    An after thought ... If you are not taking the ASE class ...

    Many Vo-Tech schools offer auto mechanics classes to adults during night school ... perhaps there is such a school in your area. Perhaps you can get enrolled there in the class, learn how to do this procedure ... use their equipment and fix your AC.

    Thanks for your interest in



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