A/C not to cool...
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Junior User
Joined: Mar 2005
Posts: 78
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From: Cedar City, UT
A/C not to cool...
Noted since I have my A/C finally up and running that on my last trip the rear temperature coming out of the vents seems much colder than the temp coming out of the front vents. 1996 xlt 3.0. I am assuming that there are not dual temp controls/systems somewhere??? At first I was going to have the freon level checked but after feeling the rear vents I am confused(doesn't take much to do that :-) ) Also when I first start the engine with the A/C off and then turn it on there is typically a very noticeable loud clunk when the clutch engages...is that typical? I have started now to just leave the a/c on all the time so that when I start it, I don't have that bang??
Thanks.
Tim
Thanks.
Tim
Posting Guru
Joined: Jul 2004
Posts: 2,416
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From: Mitchell, SD
Before spending a lot of money having your A/C looked at, I would take a probing thermometer (like for a turkey, but they do sell them at auto parts store for checking your A/C system,) and stick it in the center vents up front, get your temp, then stick it in the upper vents in the rear, record your temp, There might be a slight varience of a couple degrees (2-5) anything more, there could be an isssue. (it is difficult to go by the hand feel to test the A/C system)
If there is, I am thinking that your front accumulator (or is it the condensor, I always get them confused) is clogged or there is debree in front of it not allowing proper airflow. Both front and rear are run off of the same lines.
If there is, I am thinking that your front accumulator (or is it the condensor, I always get them confused) is clogged or there is debree in front of it not allowing proper airflow. Both front and rear are run off of the same lines.
Elder User
Joined: Aug 2003
Posts: 624
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From: Houston, TX
been there, done that.......no cold air in front, cold air in back.....looked under the hood and saw that the line going into the firewall was wet and cold up to the spring fitting. Turned out to be a clogged orifice tube. Take a look under the accumulator at the pipe running into the firewall.
Postmaster
Joined: Apr 2001
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I would support cookkd's orifice tube hypothesis. Unfortunately, you have to discharge the entire system to check it. A clogged tube is symptomatic of hidden problems elsewhere. Something is throwing off debris which is clogging the tube and most of the time it is the compressor. That 'clunk' is worrisome as it could be either a loose/bad clutch or impending compressor failure. Sorry to scare you, but this one time a good A/C shop would be beneficial. Ask them to diagnose the 'clunk' before proceeding with any actual repairs. There is a significant difference in cost between the two components. The orifice tubes are really cheap, around $1.75 to $4.00 but the labor, refrigerant recovery and system recharge will be costly. Good luck!
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