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First drive after winter, my car’s AC blows hot air from the center vent and driver’s vent but cold air from passenger side vents when I was using the AC. Any clue on where I should start?
I have the same issue, only on opposite sides. I'm guessing I have a blend door issue. So, since I have A/C, do I take the dash apart to fix it, or just tell the passenger to suck it up?
Don’t know who “they” is but if they refilled it you must have a leak…if you didn’t have a leak there would be no need for a recharge…so they recovered all the refrigerant, pulled a vacuum, found no leaks then recharged with the correct amount ??
AC FREON WAS EMPTY- RECHARGED SYSTEM AND TESTED FOR LEAKS- NO OBVIOUS LEAKS FOUND. These was what the repair shop wrote on the repair log!
I do not why half the vents are hot the other half is blowing cold air if the Freon is low?
AC FREON WAS EMPTY- RECHARGED SYSTEM AND TESTED FOR LEAKS- NO OBVIOUS LEAKS FOUND. These was what the repair shop wrote on the repair log!
I do not why half the vents are hot the other half is blowing cold air if the Freon is low?
If the system was EMPTY you have a leak !!…find another shop preferably a shop that specializes in AC !!
Whether you have a leak really depends on when you had the system recharged last. For example, If it was recharged within 3-6 months ago, then you know you have a pretty substantial leak and those are easily detectable. On the other hand, if it has been several years and the shop was able to pull a vacuum either you don’t have a leak (as some cars use a small amount of refrigerant just over time) or you have such a small leak that the shop wasn’t able to find it which is common with pin hole leaks or extremely small damage to o-rings in the ac system.
im sure the shop you went to used dye when they recharged your system so use a black light and if you see any leaks after a while. Another common very small leak comes from inside the dash. You’ll need a “sniffer” for that.
these systems are very sensitive to low refrigerant so best case scenario you’re good to go for many more miles. Happy motoring!!
AC FREON WAS EMPTY- RECHARGED SYSTEM AND TESTED FOR LEAKS- NO OBVIOUS LEAKS FOUND. These was what the repair shop wrote on the repair log!
I do not why half the vents are hot the other half is blowing cold air if the Freon is low?
The reason that low refrigerant levels lead to the scenario you are seeing/feeling is that the dual zone climate control system uses 2 separate sections of evaporator core, plumbed in series. The passenger section receives refrigerant first, then the driver side after it has passed through the passenger side. With a low refrigerant charge, there's not enough heat carrying capacity to still provide cool air by the time the refrigerant reaches the driver side.
As stated above, you need to find a shop that can actually diagnose the leak, not just fill it up and send you out on your way with a shrug.
AC FREON WAS EMPTY- RECHARGED SYSTEM AND TESTED FOR LEAKS- NO OBVIOUS LEAKS FOUND. These was what the repair shop wrote on the repair log!
I do not why half the vents are hot the other half is blowing cold air if the Freon is low?
Read the DIC codes. If there is a blend door issue there should be some codes set
OK, so what other “variables” are there with no Freon in the system ???…bad relay, compressor, wiring…educate me please !!
oh !! My fault Diag, I don’t realize it was you I was you I was responding to. There are a ton of variables with these C5 ac issues. I’ve owned my car since March, 2000. Have dealt with many ac issues. I’ll send you a Dm. Happy motoring sir!
oh !! My fault Diag, I don’t realize it was you I was you I was responding to. There are a ton of variables with these C5 ac issues. I’ve owned my car since March, 2000. Have dealt with many ac issues. I’ll send you a Dm. Happy motoring sir!
If your system was empty of refrigerant, you have a leak. Period. No other explanation. You can also be having blend door issues as well, but there is a leak IF there was no refrigerant in the system.
These compressors commonly have a leak on the shaft seal (99 Corvette). I have also seen a leak on the high pressure relief valve in the compressor on a 99 Silverado (same compressor).
Your mechanic should have an electronic leak detector that can detect small traces of refrigerant. A dedicated AC shop will have various techniques to find a leak as mentioned.
I agree with the other guys. Find out if you have a leak or not first. Then look into the blend doors.
As much as it would be a true honor and privilege to meet one of the original cadre of Corvette Forum members go spend the time in Florida with your Memaw and Pepaw !!…I’m sure they will be excited to see their little Grandson !!
These are the common codes for failed blend doors. Had mine fixed back in 2008. As you can see, there is a dealer bulletin on the issue. Back in ‘08 my car only has about 20k miles. You can see how quickly these failed. Also, just because there is warm air and an undercharged system does NOT necessarily mean there is a leak. The dealer didn’t find a leak. Changed out the blend door and filled the system. All was good for several years thereafter !!
AC issues
