Last post on Dec 14, 2011 at 11:48 AM
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Buick LeSabre, Sedan
#1514 of 1520 2003 Buick LeSabre AC problem
Jul 13, 2011 (9:32 am)
The blower has been working just fine but today when I cranked the car, it would not come on. No warning. There is some cold air coming through but the blower is not producing flow. Any idea how to troubleshoot?
#1515 of 1520 Re: 2003 Buick LeSabre AC problem [cathy323]
Jul 13, 2011 (11:23 am)
With the car running or the key ON and the blower set to a higher speed, tap your foot up against the bottom of the heater box--just to the right of the hump on the passenger side. Most likely the blower will make electrical contact and start running.
The carbon blocks that rub the commutator to carry the power to the magnets lose contact due to wear.
If not that, then remove the plastic panel under part of the right side so you can see where the round part is for the blower motor and the wires coming from it. Those wires go a few inches to a connector. The contacts at that connector sometimes corrode due to the heat of the current. You can try wiggling that contact and see if the blower starts then.
Report what you find back here please.
#1516 of 1520 Re: 2003 Buick LeSabre AC problem [imidazol97]
Jul 27, 2011 (6:41 pm)
Our 2003 Buick LeSabre is behaving similarly only the blower comes on fine sometime and at other times does not blow. There is cold air when moving down the road, but not being blown by the blower. I haven't tried tapping the bottom of the heater box or checking the contacts, but I will try that.
Thank you for the post.
#1517 of 1520 Re: 2003 Buick LeSabre AC problem [bew5254]
Jul 28, 2011 (5:05 pm)
The blower worked this morning on the way to work, but didn't when I got in the car at the end of the day. I then thumped the bottom of the heater box like you suggested and the blower came on.
Can you explain further what I need to do to fix this permanently?
#1518 of 1520 Re: 2003 Buick LeSabre AC problem [bew5254]
Jul 28, 2011 (6:18 pm)
Buy replacement blower. I got mine from Autozone, because I was in a hurry when it finally quit reacting to being bumped. Autozone was the only stores in the area that stocked that motor despite its covering lots of Bonneville and leSabre years. Other stores were happy to order one in for me in 1 day or 2 days. Autozones sold enough only 2 of their stores had them in stock and I called that store and they held one for pickup on my way to a cruise-in that afternoon on the other side of town.
rockauto.com is another good source. There are 5% off coupon numbers out there for rockauto.com as well. I got I think they have several warehouses around the country.
Take off the plastic shield under the passenger dash. Remove carefully. I ended up with a piece broken off of mine and could never figure out where it came from.
Unsnap the power wires from the blower motor. Inspect the power wires. Some have had them corrode from heat due to the high current. If that has happened that might be the cause of the problem rather than the brushes inside the motor itself. You could try cleaning that connector and test the system for a while longer before replacing motor.
Bumping the motor might be causing the wires to make contact again if corroded. But I didn't think I bumped hard enough to do that on mine. And when I did replace motor, they were in perfect shape.
The blower motor is the circular area close to the transmission hump.
Remove three screws. Remove the rubber air tube that sends air back to the motor for cooling. Lower the motor carefully rotating to bring out the squirrel cage. Some folks say to pull carpet back from the firewall to gain more vertical room. I did not need to do that on my leSabre 03.
Put new motor up into place. I recall it was hard to hold it because it's fairly heavy. I had to hold it, get the rubber tube in place, get screw started, then get next screw started. If I recall, I ended up using something under the motor to help hold it for me while I started screws. I needed three hands.
#1519 of 1520 LeSabre / 3800 Engine Rough Idle
Sep 06, 2011 (2:33 pm)
Hi, I've been looking for a 2002-5 LeSabre or Park Ave and have noticed something that troubles me. Most cars run smoothly are but some cars idle quite roughly. Is this a problem on this model? All the cars I have driven run smoothly on the road but the idle is quite noticeable when sitting still -- and is more pronounced when in gear than in park. I thought the ashtray was going to shake loose on one model. The comments I get are "that's normal for that model" although this is definitely not normal. Is this something all LeSabres develop and does it get worse? Would this indicate a transmission problem since it is worse in drive? I've been looking at cars under 70k miles but have become paranoid and I'm looking for the least little vibration in them now. I've never heard of this type of problem before. Thanks in advance.
#1520 of 1520 Re: 05 LeSabre Gas Cap loose code [vincem1948]
Dec 14, 2011 (11:48 am)
To get back to your original question if you havent figured it out by now...I have an 01 buick lesabre and i had the same problem. It turns out its easier then everyone is making it out to be for you. There is a sensor where the cap screws into. Clean the sensor and the area around the cap very well. It might take a few days for it to go off. If this doesnt work clean the fuel injector rail where the main line connects. Take off the rubber clip and clean well. If you really dont have a pressure leak this will do the trick!