HI can a Cadillac converter issue case my radiator to blow?

India Anand

Asked by Feb 18, 2016 at 01:59 PM about the Hyundai Elantra GT

Question type: Maintenance & Repair

HI can a Cadillac converter issue cause my radiator to blow? how much will it
cost to fix it. this is a 2001 car. is it worth putting this money into it? I

4 Answers


Hello! A bad catalytic converter can make a car overheat by causing a backup of pressure in the cylinder head. If the Elantra is overheating, I would have her towed to a reputable mechanic and have them replace the Catalytic converter, and do a full fluid flush/change (engine oil, and radiator/cooling system). I hope this helps, and best of luck!


I also just looked at your photo. All that brown fluid, is your engine oil and your antifreeze (or coolant) mixed together. This is KEY INDICATOR of a blown head gasket. Do not drive the car as doing so will severely damage the engine if it hasn't already. I would have the car towed to the nearest reputable mechanic as soon as possible. Again, I would not recommend driving the vehicle. It could irreparably damage the engine.


WOW, your car threw up !

1 out of 1 people think this is helpful.

Usually no, the main cause of radiator failures is poor maintenance followed by an engine failure of some type ie headgaskets, thermostat, etc. When a catalyst is going bad you will notice a loss of power and an increase of fuel usage and a check engine light. It is a Hyundai so if it is just a catalyst and a radiator and they are available aftermarket, it shouldn't be too hard on the pocket book, but after all it is a 15 year old car, so do the math and figure how you want to proceed.

1 out of 1 people think this is helpful.

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