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Old 06-23-2005, 04:24 PM
Posts: n/a
That doesn't really look like a bad expansion valve to me although it could be partially open causing such pressures.

It looks to me more like a weak compressor. Niether one of these scenarios would be very common at all. The only thing that usually happens to the TXV is that it leaks on top at the diaphragm. The compressors usually work or they have catastrophically failed.

I have had a similar expansion valve fail open on another make car and it gave hardly any difference in pressure at all. When they fail in function, I think it is more common for them to pinch off and actually draw the low side into a vacuum.

Hope this helps somehow,
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