Question about 1989 Buick Century

1 Answer

My buick is releasing steam vapor though the vest and is leaking in the car from the dash, what could it be? and also it is leaking from underneth the passenger side.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Buick Master
  • 1,779 Answers

Your heater core needs to be replaced. It's located on the passenger side , under the dash. The heater core is like a small radiator. Coolant from the engine is circulated through it, and that is what provides heat in the car. The heater core is leaking, causing the 'vapor' through the vents, and leaking on the carpet on the passenger side. Heater cores are a pain to remove and replace, it's quite a labor intensive job.

Posted on Sep 11, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

I have steam coming from the vents when I turn the heater on in my 2004 Cherokee Jeep?

Most likely the "steam" is vapor from a coolant leak. Does the steam have a sweet smell? Does it leave an oily residue on the windshield when using the defroster? If so, you probably have a leak in the heater core.

Aug 15, 2016 | Jeep Cherokee Cars & Trucks

1 Answer

After it runs for awhile it starts leaking antifreeze coolant

If you can't see any obvious leaks around rubber hoses or radiator, it could be leaking though the engine block gasket into engine. Or even escaping through the rad cap when hot, leaking as steam slowly. Try putting a new radiator cap on (rad cap). As a quick fix, put Radweld solution into coolant. Any auto shop has it.

Apr 05, 2014 | 1993 Buick Park Avenue

1 Answer

Some kind of fog or steam is blowing in my vents

This is caused by a leaking heater core inside the dash. The vapor is from coolant.

Mar 02, 2011 | 1988 Ford F 150

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

1 Answer

I had car inspected and it failed emission code p-0442 came up, I own a 1998 Buick Century Custom, What does this code mean and how do i fix the problem

This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine

Jan 11, 2011 | 1999 Buick Regal

2 Answers

Steam is coming in car through heating vents

this would be a bad heater core. this is located under the dash on right side inside the heater box next to the blower motor the steam is acctualy radiator fluid that runs through it.

Jan 02, 2010 | 1991 Buick Park Avenue

1 Answer

The windshield wipers work but the washer fluid does not, does it have a seperate motor?

Yes, the pump is usually underneth the plastic ws wiper fluid. It takes +12v to operate and goes out quite often. Need to pull tank and check for pressure out put hose. Also could be a small leak losing pressure.
Good luck

Oct 16, 2009 | 1995 Buick LeSabre

1 Answer

Temp gauge reaches red line and smoke/steam from under hood, but no leaks of any kind. This after recent oil change and thermostat install.

Something is wrong. What does the steam smell like? Oil or antifreeze?
Look closely for coolant seeping onto something hot and vaporizing, if that's what you smell.
Check your coolant level and oil to verify if you may have a leak.

Oct 01, 2009 | 1997 Chevrolet Blazer

2 Answers

Water under dash board 1983 buick skylark

Your heater core needs to be replaced. The heater core is like a mini radiator, providing heat for the interior by coolant circulating from the engine, into the heater core, and back to the engine again. Like a radiator, a heater core can spring a leak, especially w/ age as a factor. This results in the leak inside the car, which also causes the 'smoke' you see, which is actually vapor form of coolant.

Nov 17, 2008 | 1983 Buick Skylark

Not finding what you are looking for?
Cars & Trucks Logo

200 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts


Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8270 Answers

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

Answer questions

Manuals & User Guides