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99 Malibu passenger side floorboard is wet could it be the heater core

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Sure sounds like it is the heater core leaking. Check the radiator as see if it is low or run your hand along the bottom of the cover for the heater and see if you can feel water on the heater core cover. Hope this helps.

Posted on Apr 22, 2017


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Posted on Jan 02, 2017

  • 2002 Answers

SOURCE: Wet floorboard on driver side

your heater core (a small radiator) in the heaterbox is leaking

Posted on May 28, 2009

  • 179 Answers

SOURCE: Floorboard is wet on passenger side of a 2004 trailblazer

blown heater core

Posted on May 31, 2009

  • 1 Answer

SOURCE: 2002 Wet passenger front floorboard

dodge sells a small 90 degree hose that slips over the drain on the fire wall about $6.00 . this will solve the problem.

Posted on Jul 05, 2009

  • 297 Answers

SOURCE: wet floorboard

the water could have just traveled. check the heater might be bad.

Posted on Jul 15, 2009

  • 677 Answers

SOURCE: water on passenger floorboard

Iside the car,in the middle of the console is a shallow tray.Its job is to catch the codensation that drips off the aircon.Same as you see hoses coming off home aircons.this is what is in the car.There is a hose,about as thick as a finger,that drains the codensation out through the firewall of the car and into the rear of the engine bay to the ground.There may be 2 hoses.One either side if its a split catchtray.The hose has either been knocked off or is blocked.Usually blocked.The tray itself gets dirt in it and this is where 'gunk' can buildup over the drain hole.Find the hose and shoot some compressed air up the hose or run some line trimmer cord up there.Hope this helps

Posted on Sep 19, 2009

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2 Answers

Could my heater core be causing my passenger floorboard to get wet

Yes, or a hole in the bodywork under the mats. Does it do it all the time or only when you drive on wet roads?

The heater core is behind the dashboard and often central or on the passenger side.

Sep 19, 2015 | Cars & Trucks

1 Answer

My 1993 Buick Century's heater and defroster will not blow hot air. Also, there is water on the floorboard on the passenger side. The car is not running hot. What is wrong?

There could be a number of issues at work here. First, and most important is to address the source of the wet floorboard on the passenger side. Get you fingers wet and then rub your fingers together. Does the wetness feel a bit more slippery than just water? Smell it. Does it have a bit of a sweet smell? If so, this could be coolant leaking from the heater core into the passenger compartment. Slow leaks will take a while to notice in the coolant level. If this is the case, replacement of the heater core will be necessary. The wetness could also be just rainwater coming in from an open firewall plug, damaged door seal, or perhaps windshield seal, where rust or a poorly installed replacement could result in leakage. Now about the heat. First, is the engine coolant reaching operating temperature? Run the vehicle for at least ten minutes. Then feel the upper and lower radiator hoses. Both should be hot. If not, you may have a thermostat issue that is keeping the coolant from getting warm enough to produce sufficient heat. If the hoses are hot, then check both the supply and return heater hoses to the heater core. They should both be hot as well. If not, then a clogged heater core is usually the culprit. You may be able to get lucky and back flush the core, but most times replacement is required. If everything to this point has checked out OK, then it is likely that the blend door in the heater control box is inoperative and will not divert the cabin air through the heater core. This is hard to determine as it is all under the dashboard and sometimes difficult, if not impossible to see. Check the control head vacuum lines for cracks and breaks. Look at the vacuum actuators and ensure they are operating and that their linkages are connected as move freely. Repair or replace any problems found.

Dec 14, 2013 | 1993 Buick Century

1 Answer

Im leaking antifreeze from a pipe by the firewall what is that pipe is call, u have one side going to the water pump, and the other side going to the thermostate

this should be the heater core,is the pipe itsself bad or is it just the hose needing replaced?does heat work,is the passengers floorboard wet with coolant?could be the hose bad or the heater core bad,some cars have whats called a heater control valve right there at the firewall that the hoses hook up to,it could be bad,if hoses just hook up to two pipes sticking out of firewall,check hoses first,then look in passengers floor to see if its wet,heater core is inexspensive but costly to have replaced.

Jul 24, 2011 | 2001 Ford Taurus

2 Answers

Water leaking onto passenger side floorboard,soaking the carpet

Your heater core has developed a leak - the wetness on the passenger side carpet is engine coolant
from a heater core leak, or a leak in one of the two hoses connected to the back of the heater core.
Your strategy: disassemble dash down to heater core, determine whether you'll need a new heater
core or new hose (or new hose clamp), then replace the offending part.

Jul 20, 2011 | 2005 Chrysler Town & Country

2 Answers


Yes is it a sweet smell, is there wetness on passenger side floor does window get foggy. then yes heater core.

Dec 07, 2009 | 2001 Lincoln LS

1 Answer

Wet floorboard

the water could have just traveled. check the heater might be bad.

Jul 15, 2009 | 2004 Pontiac Grand Prix

1 Answer

Wet floorboard on driver side

your heater core (a small radiator) in the heaterbox is leaking

May 28, 2009 | 2003 Dodge Caravan

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