Last post on Aug 12, 2013 at 8:04 PM
You are in the Buick LeSabre
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Buick LeSabre, Electrical, Sedan
#163 of 188 Re: 1999 Buick LeSabre Air Conditioning fun [88fenderstrat]
Jul 11, 2011 (12:25 pm)
If you have enough vacuum to move the motors for 20-30 seconds after engine shutoff, then your underhood llines are okay. It's the connector for the programmer for the 4-5 lines.
If you don't have much vacuum, check at engine end next to large brake booster hose for rotted rubber end for the plastic vacuum line. Check under Relay Center cover down in bundle of wires for the T connection and ahead where there's a vacuum one-way valve. Check the storage tank under the right front fender behind headlight.
This is the piece on the corner of programmer box that needs to be bypassed--at least the blue line to the diaphragm for the door for the defroster to make the air come out the dash vents.
#164 of 188 Re: 1999 Buick LeSabre Air Conditioning fun [imidazol97]
Jul 11, 2011 (12:37 pm)
Thanks! I will let you know how it turns out.
Jul 13, 2011 (4:17 pm)
I am working on a 95 LaSabre that seems to be leaking condensate from under the dash. What causes this and how do I fix it? Thanks!
#166 of 188 Re: Leak under dash [grizleebear]
Jul 13, 2011 (4:25 pm)
Almost always that's due to the drain tube being stopped up. Get under the car on the right side behind the wheel and then look at the lower part of the firewall just slightly to the right of center. You should find a 4-5 inch long tube that is stopped up with muck or pollen or dirt.
Stick something up into the tube and be sure you're not under the tube while you do that. Usually a lot of water will come out.
When the AC has been running on humid days and the car is parked, is there a drip of condensation that comes out the bottom of the firewall? If not, then the AC drain is stopped up.
Rarely someone found a leak around another part letting water into the passenger compartment onto the floor. Has there been lots of rain? Does the car have a sunroof?
#167 of 188 Re: 1999 Buick LeSabre Air Conditioning fun [88fenderstrat]
Jul 23, 2011 (4:33 pm)
Here is the end of the story. I traced the lines back to the connector for the programmer. When I too the connector out, the nipples were not cracked, etc. However, when I plugged it back in, the air conditioner started to function properly. Go figure. So, I took it out again and looked more closely. The nipples were soft, and I have come to the conclusion that one or more of them were collapsing. So, I cut all of the lines, spliced them, and bypassed the connector altogether. The a/c vents work beautifully now...no problems.
Thanks again for your help. The photo was very helpful as well.
#168 of 188 Re: 1999 Buick LeSabre Air Conditioning fun [88fenderstrat]
Jul 23, 2011 (5:07 pm)
Glad that it worked for you. Thanks for posting your results.
#169 of 188 Car died all of sudden with no warning
Aug 14, 2011 (6:01 pm)
#170 of 188 Car died all of sudden with no warning
Aug 14, 2011 (11:13 am)
i have a 93 lesabre 3.8 with very low miles that i got on the cheap about a year ago so i really do love her but now i've got a problem. what could cause it to die completely with no warning while driving . it won't jump and doesn't seem to take any electrical at all as in when i hook it up to jump lights/radio/windows still won't work and there is still no clicking sound when the key is turned, just nothing . i'm thinking possible a bad alt or a short in the wiring somewhere but how do i test these ? fyi the battery is only a year old so that should be fine . this is getting so hard to pin point that i may have to take it in for this one ( i hope not!)someone is stopping by soon to give me a hand and bringing his voltmeter so we can test some things but any advice from the forum is still more than welcome !!!!!!!!(also fyi it had been sitting outside in the rain for a while before the last time i drove it, then i got in it to go to the store and then about 2 blocks from my house it went completely dead and has been since )
#171 of 188 Re: Car died all of sudden with no warning [christatic]
Aug 14, 2011 (3:43 pm)
so the battery tested fine(12.3) . the fuses are fine . just no electrical power as in no horn no lights and when the key is turned no clicking sound . does this mean the ignition switch ?
#172 of 188 Re: Car died all of sudden with no warning [christatic]
Aug 14, 2011 (6:01 pm)
oh hey never mind . got it working by simply wiggling the positive cable to the battery . i read in another forum that side post batteries are the biggest flaws in gm cars and that 99% the time are the cause of electrical problems . So if you have one always try this first and once you get it started and around some tools tighten and clean her up .