AC on and off
#1
Instructor
Thread Starter
AC on and off
I am recently having a problem with the AC in my 2008 997.1 C4S cab.
I first noticed it a few weeks ago, that the compressor wasn’t blowing cold air. I thought it just needed a recharge. So I bought the kit and followed the instructions.
To my surprise, all I did was connect it to the low pressure valve in the frunk, and never even really charged the system. It read fine.
When I turned it back on, cold air. We have been away for a few weeks, and yesterday was the first time driving her again. Same result with the warm air blowing.
I’m going to check the codes and try the kit again, but would love any feedback if anyone knows something.
Thanks in advance.
I first noticed it a few weeks ago, that the compressor wasn’t blowing cold air. I thought it just needed a recharge. So I bought the kit and followed the instructions.
To my surprise, all I did was connect it to the low pressure valve in the frunk, and never even really charged the system. It read fine.
When I turned it back on, cold air. We have been away for a few weeks, and yesterday was the first time driving her again. Same result with the warm air blowing.
I’m going to check the codes and try the kit again, but would love any feedback if anyone knows something.
Thanks in advance.
#2
RL Community Team
Rennlist Member
Rennlist Member
2009 C2S 200K miles
You need to read the codes. For me, it was that little pressure valve that failed... a cheap $15 or so part. This valve finally threw a code but sometimes was working. With your A/C running, feel the two silver from/to pipes where the access ports are... under your battery cowling... one is thicker than the other... one should be warm, the other cold. For me, they were the same temperature showing some failure.
A repair shop misdiagnosed this and said I just needed a charge... they were wrong.... and charged me a good chunk of money for that. Finally, the code popped, I ordered the part and took it to another repair shop. Any shop with A/C tools can do the repair, this is not a Porsche issue... if your issue is similar. BTW, I purchased the recharge bottle with the pressure gauge (before I took it to the rip-off shop)... blah blah blah. My issue went misdiagnosed for almost a year... very frustrating.
Peace
Bruce in Philly (now Atlanta)
You need to read the codes. For me, it was that little pressure valve that failed... a cheap $15 or so part. This valve finally threw a code but sometimes was working. With your A/C running, feel the two silver from/to pipes where the access ports are... under your battery cowling... one is thicker than the other... one should be warm, the other cold. For me, they were the same temperature showing some failure.
A repair shop misdiagnosed this and said I just needed a charge... they were wrong.... and charged me a good chunk of money for that. Finally, the code popped, I ordered the part and took it to another repair shop. Any shop with A/C tools can do the repair, this is not a Porsche issue... if your issue is similar. BTW, I purchased the recharge bottle with the pressure gauge (before I took it to the rip-off shop)... blah blah blah. My issue went misdiagnosed for almost a year... very frustrating.
Peace
Bruce in Philly (now Atlanta)
Last edited by Bruce In Philly; 05-25-2024 at 11:52 AM.
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MarkTro (05-25-2024)
#3
Instructor
Thread Starter
2009 C2S 200K miles
You need to read the codes. For me, it was that little pressure valve that failed... a cheap $15 or so part. This valve finally threw a code but sometimes was working. With your A/C running, feel the two silver from/to pipes where the access ports are... under your battery cowling... one is thicker than the other... one should be warm, the other cold. For me, they were the same temperature showing some failure.
A repair shop misdiagnosed this and said I just needed a charge... they were wrong.... and charged me a good chunk of money for that. Finally, the code popped, I ordered the part and took it to another repair shop. Any shop with A/C tools can do the repair, this is not a Porsche issue... if your issue is similar. BTW, I purchased the recharge bottle with the pressure gauge (before I took it to the rip-off shop)... blah blah blah. My issue went misdiagnosed for almost a year... very frustrating.
Peace
Bruce in Philly (now Atlanta)
You need to read the codes. For me, it was that little pressure valve that failed... a cheap $15 or so part. This valve finally threw a code but sometimes was working. With your A/C running, feel the two silver from/to pipes where the access ports are... under your battery cowling... one is thicker than the other... one should be warm, the other cold. For me, they were the same temperature showing some failure.
A repair shop misdiagnosed this and said I just needed a charge... they were wrong.... and charged me a good chunk of money for that. Finally, the code popped, I ordered the part and took it to another repair shop. Any shop with A/C tools can do the repair, this is not a Porsche issue... if your issue is similar. BTW, I purchased the recharge bottle with the pressure gauge (before I took it to the rip-off shop)... blah blah blah. My issue went misdiagnosed for almost a year... very frustrating.
Peace
Bruce in Philly (now Atlanta)
#5
RL Community Team
Rennlist Member
Rennlist Member
Yikes! That mess looks like battery acid. Does the battery have a vent line attached? Our cars have a built in vent line that drains to the underside of the car. I don't think this has anything to do with refrigerant as it gasses off... I will let others chime in here.
Peace
Bruce in Philly (now Atlanta)
Peace
Bruce in Philly (now Atlanta)
#6
Intermediate
Yikes! That mess looks like battery acid. Does the battery have a vent line attached? Our cars have a built in vent line that drains to the underside of the car. I don't think this has anything to do with refrigerant as it gasses off... I will let others chime in here.
Peace
Bruce in Philly (now Atlanta)
Peace
Bruce in Philly (now Atlanta)
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MarkTro (05-25-2024)
#7
Agree, it's battery acid... clean asap otherwise will eat the battery tray... as for the ac, it could be a sign of a failing receiver dehydrator... a $20 denso part... easy to replace and cheap... do this and youll be a happy camper again!!
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MarkTro (05-26-2024)
Trending Topics
#8
RL Community Team
Rennlist Member
Rennlist Member
That's acid. I would replace the battery too. You need to thoroughly clean that whole area with hot water and baking soda to neutralize the acid. When you replace the battery get an AGM one.
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MarkTro (05-26-2024)
#11
it's a readily available part ; pelican, fcp, suncoast.... they have it... you will need ac tools to successfully do the job. In the US, it is illegal to vent r134a to the atmosphere. You'll need a recovery machine.... other tools are vacuum pump, a gauge set.. you'll also need a tank of r134a... it's easy but tools are not that cheap so ask around for professions who can do it.... shouldn't be too expensive...
The following users liked this post:
MarkTro (05-27-2024)
#12
Instructor
Thread Starter
it's a readily available part ; pelican, fcp, suncoast.... they have it... you will need ac tools to successfully do the job. In the US, it is illegal to vent r134a to the atmosphere. You'll need a recovery machine.... other tools are vacuum pump, a gauge set.. you'll also need a tank of r134a... it's easy but tools are not that cheap so ask around for professions who can do it.... shouldn't be too expensive...
#13
Instructor
Thread Starter
Thanks again and have a wonderful Memorial Day!
BTW, I'm in Mooresville (not too far from Clemson) and we have a pretty cool driving group if you are ever interested in driving with us.
#14
Instructor
Thread Starter
it's a readily available part ; pelican, fcp, suncoast.... they have it... you will need ac tools to successfully do the job. In the US, it is illegal to vent r134a to the atmosphere. You'll need a recovery machine.... other tools are vacuum pump, a gauge set.. you'll also need a tank of r134a... it's easy but tools are not that cheap so ask around for professions who can do it.... shouldn't be too expensive...
https://www.pelicanparts.com/More_In...c&SVSVSI=12548