Question about 1992 Cadillac Seville

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Car starts but has no power and exhaust pipes get red hot

A 1992cadillac starts but sputters when excelerating and the exhaust pipe before converter gets red hot

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Your converter is blocked needs to be changed,unless exhaust system is damaged and causing restrition.

Posted on Apr 18, 2009

  • thompson fred Dec 06, 2012

    punched holes in converter was full of dust this was an attempt to get flow to stop from getting red hot but after colled tried starting car and acts like firing issue or gas///???

  • thompson fred Dec 06, 2012

    can you help me with imfo i just posted

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1 Answer

Car loses power, exhaust heats up and sputters


This could be a clogged catalytic converter, or physical damage to the exhaust system. Many auto shops will check stuff like that for free, or a small diagnostic fee which they apply to the cost of the repair if you have them do the work.
You look under the car and see if any of the exhaust piping is bent or pinched blocking the flow. For the catalytic converter. After dark run the engine unit it starts to get hot then look under the car to see if any part of the exhaust is glowing orange or red. Be sure not to let the engine get too hot. If the Cat is clogged it will be glowing by the time the engine reaches normal operating temp.

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It takes a lot of heat to make the exhaust pipes get hot enough to glow red. It is a dangerous condition and can lead to a vehicle fire. A clogged catalytic converter or manifold could cause this, but ultimately the heat from the exhaust fumes is not exiting the system properly. Even a clogged tail pipe could cause this. A vandal might have stuck something in the end of the tail pipe.
It is running rough because it cannot push the exhaust out and therefore cannot take in enough air.
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What would cause the two exhaust manifold pipes on the passenger side to glow red hot the ones on the driver side does not get red hot 2000 Mitsubishi galant 2 4


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If the exhaust system was plugged the engine wont run, normally. It will start and idle until the back pressure is such that it can't take in more air/fuel mixture and then stall.

After the converter, there may be a resonator, and then the muffler. Is any exhaust flowing out of the tail pipe? You might try hooking up a scanner and see what your oxygen sensor(s) is/are doing.
Also, scan the MAF(mass air flow) sensor assembly.
Sound like the engine can't breathe, and its getting to much fuel.

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Sounds like there might be something inside of your exhaust creating pressure making your pipes hot. You might need a new Catalytic Converter. Dont wait too long to check this out, because if you do need a new Catalytic converter, your exhaust Manifold MAY Melt to your Head because of the heat.

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