Last post on Sep 21, 2013 at 10:39 AM
You are in the Buick Regal
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Buick Regal, Sedan
#3486 of 3508 Re: 2000 Buick a/c and heater problem [bdlabs]
Aug 14, 2010 (6:17 am)
I know you posted this a long time ago,. but did you ever find out the cause to your heater and a/c problem? I am having the same problem with my Buick, a 2000 Regal LSE. The heater and a/c work fine for about the first 40 minutes, then they stop working. The car has 162K miles on it and I have had this problem for about 3 or 4 years. Other than this problem, the car has been a true gem and have been very happy with it. It runs like the day I bought it.
#3487 of 3508 Re: 2000 Buick a/c and heater problem [lwoodman]
Aug 14, 2010 (6:34 am)
What do you find when you stop the car, raise the hood, and analyze?
Is the compressor clutch engaged and the compressor turning?
Is the small tube from the compressor to the condensor HOT?
Is the large tube coming back from the evaporator in the car COLD?
If the compressor is turning and the tubes cold and hot appropriately, is the air inside the car coming out the dash vents or has it switched to the defroster? IF the car uses vacuum to control the air flow in the HVAC box, the vacuum may be lost due to back rubber connections under the hood, or due to the vacuum reservoir being cracked, etc.
I do not know if the HVAC box uses all electric actuators or if it does have vacuum. I do know the leSabres up to 1999 had electric to control the blend doors and used vacuum elsewhere. The vacuum connector on the corner of the programmer box on the heater would soften with age and the openings would suck shut. Usually the one for the blue vacuum line going to the door turning off the defroster and forcing air out the dash vent was the one first noticed. No vacuum, the cooled air comes out the defroster.
#3488 of 3508 Re: 1991 Buick Regal Custom - R&R Starter [stephenwolfe]
Nov 08, 2010 (10:03 pm)
to change that starter you have to remove the fans, loosen the ac compressor,coolant overflow tank and if you have a helper have them help hold the compressor and lines as far out of the way as you can. remove the starter bolts one from the front side then the other from the rear of the cross member. with some effort you should then be able to get it out under the ac and trans coolant lines. I've bone this and its a tight fit in and out.
ps. remember to replace the shims! good luck
#3489 of 3508 Vibrating blower motor
Dec 27, 2010 (5:57 pm)
When I turn my heat or air on the blower motor just vibrates and makes noise. It will vibrate 2 to 3 times and then shuts off. When it shuts off it sounds like theres is a vent being closed or something to that extent. There isn't any air coming out when the motor does this and it happened all of a sudden . Any help would be appreciated with this as being winter and not able to defrost my windshield and dont have heat except from it coming as I'm driving down the road. One more thing, when I turn the blower motor on it affects the steering as it seems tighter like manual steering.
#3490 of 3508 Engine stumbling. Possible bad egr valve?
Jan 28, 2011 (9:21 am)
I have a 1999 Buick Regal LS with 108k miles. About a week ago, when coming to a stoplight, after hard acceleration, the engine started stumbling, with rpm's jumping down. After about 30 seconds of this the CEL came on. Ran car 20 seconds more and symptoms disappeared.
I had the code read at AutoZone, which indicated a fouled EGR valve. Took it to the shop. They said they'd need to run diagnostics at $89. Fine. They come back say the EGR is "clean as a whistle", that there was probably some carbon in the EGR valve that didn't allow a proper vacuum seal, and that it passed through. Everything fine they say.
Today, same symptoms. Slowing down after moderate acceleration (in a hurry) the engine started stumbling a bit, like it may die. Happened for 45 seconds again, then cleared up. So question is, more carbon in EGR valve...or something else? I did put some Gumout cleaning solution in gas tank a couple weeks before this happened, could this have loosened up some gunk? Thanks.
#3491 of 3508 Re: Engine stumbling. Possible bad egr valve? [jipster]
Jan 28, 2011 (9:36 am)
My car gave occasional symptoms of a really bad idle coming to stoplights. A little gas sped up the motor enough to smooth it out and the symptoms were gone. Happened a couple months later. Then a week later. I tried cleaning the EGR valve pintle. Didn't help.
Then I cleaned the interior of the valve where the gases go in using a small brush and a liquid cleaner. I may have used gasoline or mineral spirits. Do not turn valve upside down so that solvent runs into the part that has the motors that move things. I soaked it sitting in a small bowl of the stuff to soak the interior.
But I kept brushing using a plastic bristle brush and brass wire small brush from Harbor Freight. The rod that moves through the tight seal area inside that goes to the motors gets bound up with carbon.
If you have 3/8 inch drive tool set that is metric your can undo the two nuts. Unsnap the electric connection. And the thing lifts up. The gasket almost always is okay. Just replace same position it's in.
Thing has worked perfectly since the thorough cleaning on my 1998 leSabre with 180,000.
#3493 of 3508 Re: sdcoburn [yurakm]
Jun 15, 2011 (11:26 am)
Hello just wondering if you fixed the problem? my car is doing the samething. please let me no.Thank you.
#3494 of 3508 Re: sdcoburn [antoose1]
Jun 15, 2011 (1:02 pm)
Change the fuel pressure regulator. My pressure seemed
rock solid but it is vacuum controlled and there was apparently
a vacuum leak in the unit which caused the stalling. Once replaced,
no more stalling.
#3495 of 3508 Re: 2000 Buick Regal intermittently not starting [bobakamarv]
Jul 06, 2011 (4:35 pm)
Did you resolve your intermittent starting problem with a new battery cable, if not did you find another cause?