Air conditioning problem 1999 C5
Thread Starter
8th Gear
Joined: Feb 2007
Posts: 8
Likes: 0
Air conditioning problem 1999 C5
Hi,
So the other day the cold air just stopped coming out of the vents. The air still flows, just not cold air. lights and fans all work like normal. I had the gas checked and its ok. But the ambient temp read 32 deg. So my mechanic guessed it was the sensor. He replaced it and it problem still remains (both the wrong temp and no cold air).
Also my oil pressure is off the scale, both on the analogue and digital meters. But the actual oil pressure is normal. This has been like this for a few months.
Do you think these problems could be related? Am I having general electrical gremlins?
My car has been tiring to send me to the poor house in the past few months so any ideas would be appreciated
So the other day the cold air just stopped coming out of the vents. The air still flows, just not cold air. lights and fans all work like normal. I had the gas checked and its ok. But the ambient temp read 32 deg. So my mechanic guessed it was the sensor. He replaced it and it problem still remains (both the wrong temp and no cold air).
Also my oil pressure is off the scale, both on the analogue and digital meters. But the actual oil pressure is normal. This has been like this for a few months.
Do you think these problems could be related? Am I having general electrical gremlins?
My car has been tiring to send me to the poor house in the past few months so any ideas would be appreciated
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
Hi,
So the other day the cold air just stopped coming out of the vents. The air still flows, just not cold air. lights and fans all work like normal. I had the gas checked and its ok. But the ambient temp read 32 deg. So my mechanic guessed it was the sensor. He replaced it and it problem still remains (both the wrong temp and no cold air).
Also my oil pressure is off the scale, both on the analogue and digital meters. But the actual oil pressure is normal. This has been like this for a few months.
Do you think these problems could be related? Am I having general electrical gremlins?
My car has been tiring to send me to the poor house in the past few months so any ideas would be appreciated
So the other day the cold air just stopped coming out of the vents. The air still flows, just not cold air. lights and fans all work like normal. I had the gas checked and its ok. But the ambient temp read 32 deg. So my mechanic guessed it was the sensor. He replaced it and it problem still remains (both the wrong temp and no cold air).
Also my oil pressure is off the scale, both on the analogue and digital meters. But the actual oil pressure is normal. This has been like this for a few months.
Do you think these problems could be related? Am I having general electrical gremlins?
My car has been tiring to send me to the poor house in the past few months so any ideas would be appreciated
Racer
Joined: May 2009
Posts: 279
Likes: 4
From: Cincinnati OH
If the temp sensor was replaced and the same symptoms remain, then that was not the problem. The circuit (wiring, connectors, modules) need to be checked.
Last edited by lespaulr0cker; Aug 6, 2010 at 06:14 AM.
Race Director
Joined: May 2004
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From: Raleigh, NC
St. Jude Donor '15
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
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Burning Brakes
Joined: Jan 2010
Posts: 763
Likes: 0
From: Murfreesboro TN
Hi,
So the other day the cold air just stopped coming out of the vents. The air still flows, just not cold air. lights and fans all work like normal. I had the gas checked and its ok. But the ambient temp read 32 deg. So my mechanic guessed it was the sensor. He replaced it and it problem still remains (both the wrong temp and no cold air).
Also my oil pressure is off the scale, both on the analogue and digital meters. But the actual oil pressure is normal. This has been like this for a few months.
Do you think these problems could be related? Am I having general electrical gremlins?
My car has been tiring to send me to the poor house in the past few months so any ideas would be appreciated
So the other day the cold air just stopped coming out of the vents. The air still flows, just not cold air. lights and fans all work like normal. I had the gas checked and its ok. But the ambient temp read 32 deg. So my mechanic guessed it was the sensor. He replaced it and it problem still remains (both the wrong temp and no cold air).
Also my oil pressure is off the scale, both on the analogue and digital meters. But the actual oil pressure is normal. This has been like this for a few months.
Do you think these problems could be related? Am I having general electrical gremlins?
My car has been tiring to send me to the poor house in the past few months so any ideas would be appreciated
If the A/C compressor is running, what is your suction pressure and the ambient temp outside when that pressure was measured?
Are you able to control the air temp inside the car from cool outside air to heated air (dampers stroking?)
Can you control the air to go out the windshield, floor or vents on dash or do they all blow air all the time?
I have a 99 and just fixed several issues with mine.
PM me if you have more questions or information on your issue. I have a full set of dealer manuals for the 99 Vette I picked up online and I suggest anyone with a C5 get a set for your car. I saved myself thousands already.
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
The problems are not related, the oil pressure sensor just needs to be replaced, common problem. The ambient temp of 32 is why the air is not working. When he replaced the sensor did he take the time to check the wiring? Check the dic for codes I would think the sensor being bad or shorted would post a code.
B0333 Outside Air Temp Sensor Open
I still think this is your problem.
Melting Slicks
Joined: Sep 2002
Posts: 2,329
Likes: 0
oil pressure sensor is behind the intake manifold - you have to take the manifold off to see it - good directions on the Forum for this - old sensor screws out - new screws in
make sure you reconnect the vacuum hose on the back of the intake manifold that runs to your a/c
make sure you reconnect the vacuum hose on the back of the intake manifold that runs to your a/c
Burning Brakes
Joined: Jan 2010
Posts: 763
Likes: 0
From: Murfreesboro TN
oil pressure sensor is behind the intake manifold - you have to take the manifold off to see it - good directions on the Forum for this - old sensor screws out - new screws in
make sure you reconnect the vacuum hose on the back of the intake manifold that runs to your a/c
make sure you reconnect the vacuum hose on the back of the intake manifold that runs to your a/c
Scroll down to post #62.
http://forums.corvetteforum.com/c5-t...iy-thread.html
Edit:
I forgot to mention that this thread tells how to relocate it, but has information explaining the failure and pictures showing the sensor.
Last edited by TN Vette; Aug 7, 2010 at 04:19 PM. Reason: Added comment...
19972004, 1999, air, bad, c5, common, compressor, conditioner, conditioning, corvette, problem, problems, run, sensor, temperature
