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Rich
Rich, Technician
Category: Car
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Experience:  ase certified, mitsubishi certified, kia certified and landrover certified technician
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A lot of steam coming from dashboard vents and vents on passenger door.

Resolved Question:

I have steam coming from the dashboard and passenger car door vents. Every time I popped the hood of the car, nothing seemed to be coming from there.   Oil pressure light seems ok. Voltage is in the ok range but just barely.   Water temperature seems ok.   What is causing this?
Submitted: 6 years ago.
Category: Car
Expert:  Rich replied 6 years ago.

hiCustomer

 

Does the steam have any smell?

 

Let me know

Rich

Customer: replied 6 years ago.
Well, to be honest, it smelled a little like antifreeze. It later smelled like maple syrup. I am not sure what is causing this. I don't want to pay alot, I really am broke. I don't trust most mechanics, so I need to know what is the real problem.
Expert:  Rich replied 6 years ago.

Ok,

What it sounds like is the heater core is leaking. These are the classic symptoms and description of this. On most cars the dash has to come out to replace this. What some people do for a temp repair is bypass the heater core by removing the 2 heater hoses and put in a suitable fitting to join them together. Of course you will not have any heat but it won`t leak either.

 

Let me know if I can be of further assistance

Rich

Customer: replied 6 years ago.

Would that cause the voltage to go almost up to the red area on the dashboard? Also, are you sure it isn't something with the engine, gaskets, etc? I hope not, cuz I can't afford all that. But you seem sure that it is the heater core? If so, how much will it be to replace it? Is it a hose rather than the core? Like I said, nothing seems to be coming from the engine when I open the hood, but if I drive the car, the steam slowly gets worse and starts fogging up my windshield. I am pretty sure it has a sweet smell.

Expert:  Rich replied 6 years ago.

In regard to your first question about the voltage, this could be a bad voltage regulator in the alternator or even a bad connection at the battery. Check the alternator with a volt meter and it should be around 13.5 to 14.5, if your readings are out of these ranges too much then you have an alternator problem.

As far as the steam and the sweet smell there really isn`t much else it can be. There are no hoses on the inside, only outside.As far as a price that will vary depending on the shop and their labor rate.I normally fix the cars so I am not giving repair costs. But in my opinion I would say with parts and labor you would be looking around $700.00 dollars if the dash has to come out to replace this one. On some models they are replace from under the hood and the cost is allot less.

 

I hope this helps,

Rich

Customer: replied 6 years ago.
Ok, I know there are no hoses on the inside. It is coming from the vents. I just thought that something could be hooked up to the vents that leads to a hose. I am not an auto mechanic, so I don't know. So you are sure it isn't a gasket in the engine, oil leak or something else? It seems like you may be right, but could there be anything else that causes steam to come from vents? I just want to make sure so that I get the right thing done to the car. I need to be able to drive across town. If this steam keeps coming out, am I safe to drive it across town without a fire or something?
Expert:  Rich replied 6 years ago.

The heater core is what causes the steam and sweet smell when it leaks. The likelihood of it causing a fire is very unlikely.Make sure the coolant level is full so you don`t overheat. It does not take much for the heater core to cause this smell. In time though what will happen is it will start leaking on the carpet inside.

 

Let me know if you need more help

Rich

Rich, Technician
Category: Car
Satisfied Customers: 708
Experience: ase certified, mitsubishi certified, kia certified and landrover certified technician
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