Do you have a Chilton or Hayes manuel on the vehicle they will guide you in th removal and install of the heater core unit, Every one i have changed out has been under the dash and difficult to do.Go to a radiator repair shpo they should be able to help out with a new one or a rebuilt unit .
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That smell is most likely antifreeze. If the smell gets noticeably stronger when you turn on the AC/Heater, it is possible that your "heater coil" has started leaking. You will need the services of a professional if that is the case. Those are very hard to change.
Another possibility is your thermostat is not opening, causing your engine to overheat - steaming some of the coolant (antifreeze)/water mixture out of the system.
And thirdly, it is possible that someone spilled antifreeze on the radiator etc when adding fresh antifreeze - and you smell it after the engine warms up. If your car is not over-heating and you are not having to ad antifreeze/water to the radiator, then just keep driving. The problem will most likely go away.
I hope this is helpful to you. If yes, please take a sec to rate me. Thanks! Don
If you smell antifreeze it may be 3 possibilities: 1. you may have a leaking hose/hose connector , or water pump. 2. your heater core is bad and needs replaced. Unless you know what you are doing I would highly suggest taking to dealer for heater core replacement. The dash and steering colum has to be removed to get to the heater core. This is not an easy job believe me (about-900-1200 job). If you have your heater core replaced then also replace the climate control door. This is good preventative maintenance and also a a dollar saver. I would have a pressure check run on your radiator as a first thought. All you may have is a bad hose and that can easily be replaced.
If you smell antifreeze inside the car then you probably have a bad heater core causing the coolant to leak inside you vehicle and giving you the antifreeze smell which will make you sick. If you windshield is all foggy and hard to clear and the right passenger floorboard is wet then your heater core is leaking.
You can drain the coolant out of your car by taking off the lower radiator hose. This will get most of the coolant out of your car. If you have a hose leaking under the hood you may smell coolant inside the car, but it shouldnt be too bad, if you have a leaking hose however it should be pretty obvious and your car may even be overheating.
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
if you have a puddle of water on your floorboard and you dont know where its coming from that would most likely be your problem because the same thing happened to my cavalier and i had to replace it its in the plastic shroud behind the middle console towards the bottom and the 2 heater core hoses you can see if you pop your hood and look behind the motor around the area where your rack and pinion is they arent hard 2 miss theyre 2 small hoses right next to each other and theyre easier to get off from underneath the car
Chanses are that little hole will turn into a big hole its only a matter of time, its not that hard, don't be inteminated by it, even if you have never done one before. Chk. the carpet on the pasengers side floor see if its wet, anyhow if you can smell antifreeze thats what it is heater core.
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.
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!!