Question about 1998 Cadillac Catera

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Overheating leaking water profusly especially when you turn it off. Leaking somewhere behind the motor, also passenger side heat not working blowing cold air.

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It sounds like you have a busted heater core hose. The only solution is to pin point the leak and replace the hose that's leaking. There are usually two heater core hoses coming out of the firewall on the passenger side of the vehicle. Examine both of them carefully for a blowout. Many times when a hose goes bad or is getting ready to go bad, it will have some swelling or deformation around the end of it. I hope this helps.

Posted on Mar 23, 2011

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Check all your hoses for leaks, I had a car that sounded like this and it had a bad head gasket/cracked block...as for the cold air it sounds like a bad heater core, probably plugged up.
we need to see actually where the water is coming from first of all

Posted on Mar 23, 2011

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SOURCE: overheating leaking water profusly especially when

With the location of the water leak and the cold air, it sounds as if the heater core is leaking or one of the heater hoses going to or from the core has a hole in it. The heater core is on the passenger side of the vehicle, inside, against the firewall. Is the carpet wet underneath on that side?

Posted on Mar 23, 2011

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2 Answers

My 1999 dodge caravan is still overheating. I have already replaced the thermostat and the water pump, also there is no heat. please help me someone!


Hi there.
Well you can either have a problem with either radiator outer {dust/dirt in outer core of radiator or clogged up inside were water goes, or soft hoses,blowen head gasket plus a few others ,but first go to garage to were you blow up your tyres and use the air hose and blow out the radiator core where the air goes in, 2 drain out radiator water and then refill with water at 1 ltr at a time and then check your info car book and find how much water the radiator takes ,if it dosent take all the ltrs then the radiator is blocked inside.
if engine runs rough missing etc then get your Head gasket checked out.
When you say no heat is that with heat on gauge or no heat from heater, as it could be heater blockage same as radiator core. So let me know how you get on.

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Was the coolant old and weak? At ten degrees, a weak coolant could result in freezing and that can cause an engine freeze plug to burst open. Check the side of the engine block for signs of leakage around the freeze plugs. Another possibility is the heater hoses. They run along the passenger side of the engine as well. The last possibility is the heater core. If it leaks you may smell coolant inside the passenger compartment. You MAY get a wet floorboard on the passenger side. Coolant leaking from the core usually will fall into the condensation pan for the A/C and run out of the passenger compartment thru the firewall on the passengers side.

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Could be a line leaking also could be heater core leak or water pump or comeing from overflow. Many things it could be. My best suggestion is take it and have it looked at. hard to guess with out looking at it

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2 Answers

Overheating leaking water profusly especially when you turn it off. Leaking somewhere behind the motor, also passenger side heat is blowing cold air


With the location of the water leak and the cold air, it sounds as if the heater core is leaking or one of the heater hoses going to or from the core has a hole in it. The heater core is on the passenger side of the vehicle, inside, against the firewall. Is the carpet wet underneath on that side?

Mar 23, 2011 | 1998 Cadillac Catera

1 Answer

Leaking water profusly have to add three - four times a day and passenger side heater does'nt work blows cold air.


sounds like it could be the heater core malfunctioning....Can you see where it is leaking from?

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I have an 1999 chrysler 300m an it has an overheating problem. There is also water all over the driver side floor (front n back) it is soaked. It takes about 25mins b4 it starts smoking. Can som1 plz help...


Typically if your leaking coolant inside the car, it indicates your heater core is split and leaking. Replacing the heater core is quite the job. It requires removal of the dash board and heater box. i replaced one in a 97 Cirrus at work last week and it was a 6 hour job. If your not mechanically inclined i would definitley recomend phoneing around for quotes to local auto repair shops and getting it done profesionally.

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Cant stop a 201venture van from over heating the heater works the van dont run hot but wen the heater dont heat the motor runs hot


When your not feeling heat coming from the heater it usually means that the coolant level is too low in the radiator. It sounds like you have a coolant leak somewhere which is causing your overheating problem. Fill your radiator and let the engine run for about a half hour with the radiator cap on tight. Then turn off the engine and check for any leaks under the van. If you don't see any leaks under the van then see if the carpeting is wet on the passenger side of the vehicle. If the carpet is wet and it smells like anti-freeze you have a heater core that is leaking. I hope this helps you. :)

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I'm not familiar with your model to know if you have an engine temp guage or a light that would come on if the engine is overheated. You said the motor wasn't overheating under the hood... but you have an overheating problem? Maybe just a tad bit more info...
Are you losing coolant?
The water pump if bad, would probably leak or make terrible racket.
Just to take a shot at it, since you said it blows smoke through the dash... I'm assuming a kindof white smoke with a rather sweet smell? Have you noticed any wetness on the passenger floor at all? If yes to any of this, I would suspect as you mentioned, a leaking heater core. Hope this helps... Good luck!

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We have no heat or even air coming on in our 1996 plymoth neon there is also water leaking from under the passenger side dash board were the heater core is can you help please thanx


these guys are retarded, could be the fuse, could be the relay, could be the fan control unit, could be the resistor, could be the fan motor itself. if the heater core was leaking, you would still have heat, you would just smell coolant, if it was leaking enough to not have heat you would see it on your floorboard.

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96 thunder bird overheating


Sounds like the heater core (a small radiator of sorts under the dash) is leaking or a hose going to it is leaking. If in a warm climate, you could bypass or block the heater hoses temporarily. Their only purpose is to make heat avail to interior of car. The 2 heater hoses either connect to feedthru's at the firewall or simply pass thru the firewall to the heater core. Every car I've seen has it on passenger side.

Peer up under the dash, it should be clear where it's coming from.

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