Question about 1994 Cadillac DeVille

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Manifolds are getting red ,no converter - 1994 Cadillac DeVille

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That sounds too hot, get emission readings and go from there. Usually the car wil run poorly without the converter, the back pressure is needed....

Posted on Sep 13, 2010

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Same prob. With my 2001 Pontiac sunfire manifold gets red redid exsaust every thing checks out but still turns red


New catalytic converter also? Check codes? System to rich will cause this and burn out a new cat in no time. Next time the manifold gets red, check the cat also.

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Catalytic converter


The exhaust downpipe is glowing red with heat?
To be honest, that may be fuel-air /and or cylinder head problem. A downpipe gets very hot, yes, but they don't glow red.

A faulty oxygen sensor can cause the catalytic converter to overheat - with disastrous results.

If you're not sure what you're doing don't mess around with things. get somebody who knows what they are doing to look at your car and give you an opinion

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Why does my manifold turn red when I already changed the catalytic converter on my 2000 Toyota Avalon


Usually, a red manifold means that you have a lot of unburned fuel going into the exhaust stream. Most likely cause of this would be a cracked or warped exhaust valve or valve seat. A compression check of the engine cylinders can confirm a leaky valve quickly. Another possibility would be a blockage in the exhaust stream. Converters can break up and their parts can move through the exhaust and clog up the muffler. In theses cases, however, there is usually a significant loss of power on acceleration and often both the converter and exhaust manifold will get red hot.

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WHAT MAKES EGUEST MANIFOLDS GET RED HOT ON 2002 FORD MUSTANG V-6


catalitic converter plugging , or the timing is way off

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if your car has no power and your car is high mile it cath converter

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I've got an audi A2, 1.8T. The manifold is getting red hot. It even damaged my turbo. What could be the problem and how can I fix it?


catalytic converter stopped up im 98% sure you will have to buy new cat and back exhaust sorry bud i hoped i helped

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1 Answer

I have a 1981 ford f150 and have a question. why dose the left exaust manifold glow red hot when i run my engine? also, my trucks engine doesn't have a catilick converter.


If it's a V-engine and the other manifold doesn't get red the one that does may draw some air, i.e. the seal between the block and the exhaust is gone. If you don't replace it, the manifold will melt.

Sep 21, 2010 | 1981 Ford F 150

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