Question about 1991 Buick LeSabre

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I just put a bypass hose on my 91 Buick lasbre and turn on the heat and started seeing steam come out the vents and now its steam on my windshield

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  • 68 Answers

Sounds like you have a bad heater core or you have antifreeze leaking in the into the heater box. Maybe a loose clamp on the bypass hose or maybe you damaged the heater core tube when you installed or removed the bypass hose and now it is not sealing properly.

Posted on Jan 04, 2017

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Posted on Jan 02, 2017

SOURCE: overheated, turned on heat to release heat and

Your car have a broken evaporator, you have to remove the dash in order to change it.

Posted on Jul 14, 2009

  • 713 Answers

SOURCE: A/C only from center vent. Heat from side vents and floor vents.

sounds like the blend motor from hot to cold is stuck open half way allowing both temps to come into the car.

Posted on Aug 24, 2009

Fixitman909
  • 430 Answers

SOURCE: 91 lx accord overheating issue

make sure your over flow/add coolant bottle is clean...check that the hose from bottle to radiator isnt clogged...also fill add bottle fluid level between add and full mark

Posted on Nov 17, 2009

  • 1 Answer

SOURCE: 1998 Tercel Cold heat to the windshield. Lukewarm out front vent.

Hey,

I just replaced my thermostat in my car due to the same problem. Except mine was a 92. I figured I'd start with the thermostat and antifreeze. Then the heating core. Now I have heat.

But yet I still have no heat on the windshield.

Posted on Dec 24, 2009

  • 2 Answers

SOURCE: What is the battery vent hose on the 2000 buick

Since the battery is located inside the passenger compartment (under the rear seat), the vent hose is needed to vent the sulfuric acid fumes to the outside of the car - away from the passengers.

Posted on Feb 14, 2011

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3 Answers

What are symptoms of hearing core going bad?


LEAKING on passenger floor plugged up as in no heat.

Mar 09, 2015 | 1995 Toyota Camry

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Antifreeze smell


replace the heater core after having a pressure test done on the cooling system to determine if core or hose problems.

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Defrosting vent is steaming out and smells like anti freeze. would it be heater core


It sounds like it, feel the rug on the passenger side if its wet then that will confirm a heater core problem.

I hope this helps you out, if it does any positive feedback would be appreciated. Thank you.

Apr 09, 2011 | 2004 Ford Freestar

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Steam coming out vents haven seen any leaks yet


Hello jgreenley32: My name is Roger and I will help you. Steam from the a/c and defrost vent generally means a leaking heater core. The steam usually has a really sweet sickening smell to it. The longer you run the engine the thicker the steam. The way to tell for sure it is the heater core would be to bypass the heater. To do this just remove the heater hoses from the heater core at the fire wall area. Not sure where they are just follow the hoses from the engine back to the firewall on the passenger side of the truck.Remove the hoses and plug them off or put a splice between them. Start the truck and warm up the engine. If the steam is gone ? Then the heater core is bad and needs replaced. Should you need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger

Mar 29, 2011 | 2001 GMC Jimmy

2 Answers

Steam is comig through vents when i turn heat on.


The heater core is leaking and need to be replaced. It's under the passenger side dash behind the glove box.

Jan 26, 2011 | 1995 Buick LeSabre

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I have a 1999 Buick LeSabre. My AC blows cold air out my windshield and floor vents but not out of my mid or panel vents.


the vents are run on vacuum so if you get the others just not vent sounds to me like you need to find your junction and see if all the hoses are hooked up. mine was passenger side above where ur feet go. All that usually happens is a hose came off and u need to put it back on sometimes they break but u will be able to see once u find it.

Jun 07, 2010 | 1999 Buick LeSabre

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Steaming from back of the engine. no heat. windshield fogs in the inside


If you are loosing coolant and you see water under the car after sitting you have a leak. The most likely area is the heater core as you are getting steam inside the car. If you smell anti freeze that is another confirming item. Check all the hoses and connections first before replacing the core. Good luck.

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1 Answer

Steam coming out of vents and water runnind down inside of dash


Your heater core has corroded through. You need a new heater core. You may be able to get by temporarily, with bypassing the heater core hoses, located in the engine compartment. These hoses carry coolant heated from the engine, to the heater core. You remove the hoses from the core, and put a pipe in the middle, connecting the two hoses together using hose clamps.

Should there be a cool morning, or if you need the defroster, you won't have warm air. Just a temporary fix.

May 10, 2009 | Mitsubishi Cargo Cars & Trucks

1 Answer

97 LeSabre putting out a lot of heat


If it's like a sticky film, on the inside of the windsheild, and has a similar smell to antifreeze in the vehicle, then it's a heater core leak, which I suspect it is, seeing how your coolant level is going down.

Feb 27, 2009 | 1997 Buick LeSabre

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