Ac problem on my porsche here in tx and detail pics
05-30-2011, 05:45 PM
#1
Intermediate
Thread Starter
Ac problem on my porsche here in tx and detail pics
The ac has been acting wierd. If the car is dead cold it will blow cold and get down in the 50 degree range coming out the vents. But about 20 mins after the ac is on the temp will slowly creep higher and higher. If I turn it off for about 10 mins and turn it back on it will work for about 20 mins and then do the same thing. Thats on the highway. I daily drive the car 100 miles round trip a day to work and its all highway. On the weekends just running around town though it blows kinda cold but as the motor warms up so does the ac. Ive checked the condensor fan and it works. Ive even re did a vacuum at work and it holds vacuum just fine and put freon back in it. It has 2.2 r134 in it. Any other suggestions? Any help would be appreciated. Its starting to get pretty hot here in tx lol. Also had the car detailed and polished yesterday. Heres a pic
05-30-2011, 05:51 PM
#2
First thought is if the charge is the correct amount, including oil.
Second thought is the freeze switch is kaput.
Great looking car.
Second thought is the freeze switch is kaput.
Great looking car.
05-30-2011, 05:54 PM
#3
Intermediate
Thread Starter
05-30-2011, 06:12 PM
#4
Nordschleife Master
Great looking car! I'm in DFW too.
As for the A/C, maybe it's the drier going out.
http://www.griffiths.com/porsche/ac/ice/mrice5.html
See point 1a
As for the A/C, maybe it's the drier going out.
http://www.griffiths.com/porsche/ac/ice/mrice5.html
See point 1a
05-30-2011, 06:33 PM
#5
Intermediate
Thread Starter
Great looking car! I'm in DFW too.
As for the A/C, maybe it's the drier going out.
http://www.griffiths.com/porsche/ac/ice/mrice5.html
See point 1a
As for the A/C, maybe it's the drier going out.
http://www.griffiths.com/porsche/ac/ice/mrice5.html
See point 1a
05-30-2011, 06:59 PM
#6
Having not changed or put in a new one in a 964, I can't say for certainty. It should be located in the evaporator, which will be close to the windshield, under a cowl cover where you find the windshield wiper mechanism.
I can say that a drier won't just 'go out' so you can rule that out of the equation. The drier should be changed each time the systems is exposed to air. This sounds more like a freezing up situation.
I can say that a drier won't just 'go out' so you can rule that out of the equation. The drier should be changed each time the systems is exposed to air. This sounds more like a freezing up situation.
05-30-2011, 07:45 PM
#7
Intermediate
Thread Starter
Yeah I was wondering if possibly the evaporator might be freezing up. I looked through the flaps on the firewall behind the radio and it looked dirty. I know it isnt leaking though cause the car always has the same amount of freon. Im gonna try and spray some soap and water in there and a airblower to hopefully clean it up some
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05-30-2011, 08:06 PM
#8
Nordschleife Master
I've been a P-car owner for all of 2 months now, so i'm not sure how "familiar" i'd consider myself, haha.
My A/C was also acting up recently and it turned out it needed a recharge and probably has a very slow leak somewhere (i.e. the system held pressure, but probably leaks slow enough that it may be more cost effective to recharge (R134) periodically than fix permanently.).
05-30-2011, 08:13 PM
#9
Intermediate
Thread Starter
Yup, a white C2.
I've been a P-car owner for all of 2 months now, so i'm not sure how "familiar" i'd consider myself, haha.
My A/C was also acting up recently and it turned out it needed a recharge and probably has a very slow leak somewhere (i.e. the system held pressure, but probably leaks slow enough that it may be more cost effective to recharge (R134) periodically than fix permanently.).
I've been a P-car owner for all of 2 months now, so i'm not sure how "familiar" i'd consider myself, haha.
My A/C was also acting up recently and it turned out it needed a recharge and probably has a very slow leak somewhere (i.e. the system held pressure, but probably leaks slow enough that it may be more cost effective to recharge (R134) periodically than fix permanently.).
05-31-2011, 05:07 AM
#12
When the AC blows hot, are the pipes that go from the A-pillar to the dash inside the car hot or cold? Is hot air blown out of the rear wheel-wells?
See diagram, there should be no hot air coming through pipes 16.
See diagram, there should be no hot air coming through pipes 16.
05-31-2011, 10:09 AM
#13
IHI KING!
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Is your AC condenser fan running? I'm wondering if its not. With the engine running and the AC set to max, check to see if the fan is running in the left front fender. Also, do you have access to a Scantool or Hammer? Are there any error codes on the CCU?
05-31-2011, 01:50 PM
#14
Just a fast note for the A/C if you think the eveap. coil is freezing up check the air flow when blowing cold and then after the heat comes. If the coil is freezing up there should be less air flow over the coil as there is less coil area to pass air. Found this out at work and turns out just to be a dirty coil. A bit of pm and all the dirt was gone and a/c was working great after that. Just one fast check. As for you guys up there north of Houston I have friends up in Duncanville and Desoto Next time I am going up to see them I will take the P car and get with you two. Your paint looks GREAT nice work
05-31-2011, 02:51 PM
#15
Intermediate
Thread Starter
Yes condenser fan is working great