Question about 2000 Mercury Grand Marquis

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Heater core leaking antifreeze need to replace heater core need step by step for diy. HELP!

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Advance has a brochure that will help or you can buy a hayes or chilton repair manual from their and it will give you step by step instructions with illistrations.

Posted on Jun 20, 2009

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2 Answers

Why does my ac blow smoke an smell like antifreeze in my 2001 ford expedition?


If you are getting coolant inside the cabin the common cause is a leaking heater core.

Jul 11, 2012 | 2001 Ford Expedition

2 Answers

On a 2000 jeep grand cherokee what does it mean if the heater smokes, smells like antifreeze and window fogs up when heater is on?


It is not smoke though it appears so. It is thick heavy steam from a coolant leak in your heater core in the cabin area. It will smell very sweet if it is a typical glycol based antifreeze, and the windows will fog up as the hot coolant enters the cabin area of the vehicle. Primarily on the inside of the windshield. The cure is that your going to have to replace the heater core as it is leaking. Do this soon because if it ruptures completely you will have a major mess on the floorboard of your vehicle. Coolant is also poisonous to humans and animals if ingested. The heater core will be a little pricey as will the labor to replace it. Good luck. I guarantee you it is the heater core leaking.

May 18, 2012 | 2000 Jeep Grand Cherokee

2 Answers

Diy heater core replacement


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 13, 2010 | 2000 Mercury Grand Marquis

2 Answers

Either its the heater core or the thermostat


your heater core is definitley leaking and your blower is pushing the vapor into the cabin. It will only get worse. You can minimize the smell by not running your heater or defroster, but you wont prevent the coolant from leaking and potentially getting worse. Sorry to say, the core will need pulled and repaired or replaced. Sometimes stop leak additives will solve the problem if its not too severe. I have never been a fan of them, its only a band aid in my view. also if u got pets afoid leeting they smell the antifreeze very toxic can kill pets easily. hope this helps. rate above 4* cheers

Mar 12, 2010 | 2005 Jeep Grand Cherokee

1 Answer

Antifreeze/coolant leaking from under passenger side dash


If it's your heater core, unless you're a mechanic you probably should get professional help. The heater core is located on the firewall and many parts need to be replaced to get to it. Do you see water on the floor inside the vehicle, Many times a heater core will leak inside.

Mar 12, 2009 | 1993 Chevrolet S-10 Blazer

2 Answers

Antifreeze smell and smoke coming out of vents


You have a coolant leak most likely in the heater core. Try disconnecting your heater hoses and coupling them together, then running the engine to see if the leak goes away. If it does, I would have the heater core replaced.

Dec 28, 2008 | 2001 Chevrolet Blazer

4 Answers

Leaking antifreeze from the bottom of car


This is most likely the heater core. You'll see the anti-freeze leak sometimes outside the truck because some heater boxes have a drain tube for this reason. Of course, it could possibly be a loose heater hose connection or a leaking 'diverter or bypass valve'. Most often it is the heater core though. Pay extra attention to your coolant level until it's repaired, so as not to run low on coolant and overheat your engine.

Most heater cores can be replaced with just basic mechanical knowledge and tools. Click here for a step-by-step video of how to go about it. Good luck!

Dec 14, 2008 | 2000 Ford Expedition

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

2 Answers

Leaking heater core coolent smell through the a/c


The same thing happened to my '99. I found an 'off' brand heater core locally then seached the internet to find direction on how to install. I don't remember the link, but someone had posted pictures of the step by step. Although I must say the sticking point for me was removing the screw holding the heater core to the pipes coming from the front of the car then removing the core holder.
It took me a couple of hours, not really knowing what I was doing, but went real smooth. It's fixed for around $140! And NO MORE ANTIFREEZE SMELL!!

Aug 06, 2008 | 2001 Volvo V70

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