Question about 1994 Oldsmobile Ninety Eight Regency

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Steaming up in the front of the dash - 1994 Oldsmobile Ninety Eight Regency

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It sounds like you have a leaking heater core. But definately check the hoses going to it also. Sometimes if those hoses get a crack or small hole in them they can cause some steam inside the car as well.

Good Luck

Posted on Oct 06, 2009

Testimonial: "good plan but I need to know where to look ??? under dash hood firewall"

  • makinoa55 Oct 13, 2009

    I am not completely faminliar with your particular model, but under the hood you should have 2 rubber hoses running to the firewall, one is a "feed" line the other is the "return". If something is wrong with one of them you should be able to see the leak, probably very close to the fire wall if it is steaming up inside the car. To see the leak the engine will have to be warm and under pressure.



    If you don't see any leaks near the firewall, check to see if the passenger side floor is wet, or if there is a noticable coolant smell inside the car. Usually when the inside of the windshield gets fogged / steamed up is is the heater core. It is rare but I have seen vehicles leak from a hose that sprayed inside the firewall. Your best bet is to have the system pressure tested. Most repair shops can do this easily, and shouldn't charge too much to do it.



    Good Luck



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