Search found 6 matches

by brian0918
Sat Sep 10, 2016 1:30 pm
Forum: Automotive Air Conditioning Forum
Topic: Diagnosing expansion valve stuck open vs faulty compressor?
Replies: 14
Views: 56728

Re: Diagnosing expansion valve stuck open vs faulty compressor?

I redid the same test as before on a hotter day (88F and sunny) to see if I got similar results. 1. Ambient pressure with A/C off: 105 psi 2. Turning A/C on at idle: immediate drop to 65 High, 15 Low. 3. While at idle: High wobbled and climbed to 80, Low would climb to 24, then lower to 16, then bac...
by brian0918
Sat Sep 10, 2016 7:08 am
Forum: Automotive Air Conditioning Forum
Topic: Diagnosing expansion valve stuck open vs faulty compressor?
Replies: 14
Views: 56728

Re: Diagnosing expansion valve stuck open vs faulty compressor?

mk378 wrote:You may have a bad TAO sensor, I don't know how that would affect the rest of the system.
It looks like there isn't actually a vent temperature / TAO sensor anywhere. That number is a calculated value based on the other sensors' data.
by brian0918
Thu Sep 08, 2016 7:08 pm
Forum: Automotive Air Conditioning Forum
Topic: Diagnosing expansion valve stuck open vs faulty compressor?
Replies: 14
Views: 56728

Re: Diagnosing expansion valve stuck open vs faulty compressor?

That compressor is worn out. I guess the 5k machine missed that part. Just so I can understand, what's leading you to that conclusion? And why does the high side pressure go up when the A/C is turned off? Should I take it to a dealer at this point for confirmation? Or just find another shop to try ...
by brian0918
Thu Sep 08, 2016 4:20 pm
Forum: Automotive Air Conditioning Forum
Topic: Diagnosing expansion valve stuck open vs faulty compressor?
Replies: 14
Views: 56728

Re: Diagnosing expansion valve stuck open vs faulty compressor?

Sorry for the delay. That shop wanted to check again for any leaks. They said they couldn't find any leaks, and that their recovery/recharge machine didn't find any problems with the system, so they think it's a blend door problem. I tried to ask them what the pressures were, and they said you can't...
by brian0918
Tue Sep 06, 2016 8:17 am
Forum: Automotive Air Conditioning Forum
Topic: Diagnosing expansion valve stuck open vs faulty compressor?
Replies: 14
Views: 56728

Re: Diagnosing expansion valve stuck open vs faulty compressor?

I tried adding more refrigerant initially, but then apparently I overcharged it, because the safety valve on the compressor started spraying out refrigerant and oil. The shop is very highly reviewed and one of the most popular in the county. I know that doesn't necessarily mean they can diagnose A/C...
by brian0918
Tue Sep 06, 2016 7:15 am
Forum: Automotive Air Conditioning Forum
Topic: Diagnosing expansion valve stuck open vs faulty compressor?
Replies: 14
Views: 56728

Diagnosing expansion valve stuck open vs faulty compressor?

I'm having an ongoing issue with the A/C on my 2006 Honda Accord. With outside temperature around 85-90, the passenger vent is only getting down to 65, and the driver vent is closer to ambient temperature, 75-85. Thinking the vent temp difference was due to the driver's blend door actuator, I took i...