Question about 2000 Buick LeSabre

2 Answers

NO HEAT 2000 buick lesabre

I have no heat after changing my thermostat but i am not sure if the person that changed it let the air out.

I did have heat about a wk ago then one night it stop but then it would come out a little then just stop completely. PLEASE HELP IT IS COLD

Posted by on

  • jab_srs2006 Feb 04, 2009

    Thanks for the suggestion. I do have a 3.8 L.

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 24 Answers

If this Buick has a 3.8L, there are air bleed valves that must be opened to ensure the cooling system does not develop an air lock. (Wich would cause a no heat condition). If the thermostat is functioning properly you may want to check if there is flow through the heater core. Check by feeling each heater hose at the firewall with engine at opperating temp. They should both be hot and close in temp. A noticable temp difference in the two hoses would most likely be a flow problem, either from an air lock, bad t-stat or plugged heater core. Good luck.

Posted on Feb 04, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,036 Answers

First - it may easily be an airlock.

To fix -

With engine cold, turn heater control up to max. loosen hose connection at the bulkhead where the heater is.
Start engine STAND CLEAR - wiggle to undo hose just enough to let out some coolant - and hopefully the air in there. Tighten up, and refill radiator with correct mix of coolant/ antifreeze.
(test concentration by popping a small sample in your deep freeze at -20 degrees)

If this doesn't cure it - they've fitted the thermostat the wrong way around. - Take out, turn around - so bulb faces engine, reconnect and refill - remove trapped air as above.

Posted on Feb 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

No heat whatelse could it be


water pump, air lock , blocked heater matrix , three to get you started does the engine over heat, if not then not likely to be the water pump, has the coolant level dropped, if so top up and bleed and open and close temp control for heater at same time , need a helper , do this for ten minutes so the engine is at a good temp ,making sure coolant is topped up, if after all this still no heat i'd suggest having the heater matrix cleaned through or even replaced

Oct 20, 2014 | 2000 Buick LeSabre

1 Answer

What else should I check


sounds like you might have a air lock in the cooling system I would have to know what engine is in it

Oct 20, 2014 | 2000 Buick LeSabre

1 Answer

I just hang thermostat in 1994 buick lesabre and still get no heat what can be wrong


Either the controller is not moving the valve or your heater core is clogged and needs to be back flushed.

Sep 22, 2014 | 1994 Buick LeSabre

1 Answer

I have a 2000 buick lesabre custom the heat doesn't work. The blower works it just doesn't blow out hot air to heat the inside, coolant is fine, not sure where the fuse is to check that, thermostat is...


does the two hoses for blower rad. are both hot if not rad clug if ok mixed door don't work . if you remove the glove box you can see the mix door if working.

Oct 25, 2013 | 2000 Buick LeSabre

2 Answers

No heat in 2003 buick lesabre but engine overheating


The first thing you need to do is check the cooling system coolant level. If it is low or empty, there is not sufficient coolant to cool the engine or to transfer through the heater core to supply the cabin with heat. Fill it up and check for leaks. Once leaks have been repaired, change the thermostat, engine oil and oil filter. If it is full, you may need to change the coolant due to its age, as well as the thermostat, engine oil and oil filter. The reason for the oil change is due to the thermal breakdown of the oil in overheating conditions. Also inspect the water pump to ensure it is being driven by the belt. You may also have air in the cooling system that is causing all your problems. Generally only happens when the cooling system is improperly filled. Make sure you add the correct mixture of coolant and water. Incorrect ratios will cause you similar problems.Coolant protects the cooling system and the water dissipates the heat.

Oct 07, 2012 | 2003 Buick LeSabre

1 Answer

2000 Buick LeSabre No heat, blows cold air.


check to see if both hoses are hot going to your heater core if they are then core is fine.That would point to your temperature sensor.

Feb 07, 2010 | 2000 Buick LeSabre

1 Answer

2000 Buick LeSabre blows cold air no heat


Thermostat stuck open Our in my case the Heater core was plugged and needed flushing out.

Jan 06, 2010 | 2000 Buick LeSabre

1 Answer

2000 LeSabre low milage (<75K) everyting perfect except - no heat. where do I start?


I would start by changing the thermostat. If you do your own work, here is the link to a step by step guide that will assist you

http://www.ehow.com/way_5369224_buick-thermostat-replacement-instructions.html

Oct 01, 2009 | 2000 Buick LeSabre

Not finding what you are looking for?
2000 Buick LeSabre Logo

1,001 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

60867 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...