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Monday, August 08, 2016

Where is the Freon going?

Below is a Real Fix from Mitchell 1′s new SureTrack®
expert information source. These documented issues from actual shop repair orders demonstrate how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is currently available free in our ProDemand product.

Where’s the Freon Going?

It’s hot outside! Where’s the refrigerant going? SureTrack community member Lutters had a Prius in their shop that repeatedly lost its Air Conditioning System Freon. They posed the question to the community, and with the help of fellow community member ericsautomotive and others, they were able to resolve the issue.

The following Real Fix summarizes the interaction between them in the community that led to the solution.

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2010 Toyota Prius BASE 1.8
Repeat A/C Refrigerant Loss, Replaced Evaporator
Car came in 1 month ago for poor air conditioning cooling. Found refrigerant level .8# low. No obvious leaks.
Diagnostic Steps Performed/Parts Replaced
Recharged and added dye. Came in today, less than 1 month later for poor cooling, system down .3#. Very hard to see condenser but no dye seen and no sniffer results. Took blower motor out and used sniffer and camera with black light and found no leaks. All A/C lines and compressor are good.
Best Answer from Community
No dye on the outside = No high side leaks….. It’s got to be on the inside!!! There are TSBs on odor and other Evap issues. Did you try sniffing the drain while system is on low speed?
Member Name: ericsautomotive
After rechecking a week later, we found traces of dye on the frame section directly below the evaporator drain tube. The only way to see this was with a mirror and black light.

Replaced A/C evaporator and has been good since.


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