Question about 1992 Oldsmobile Bravada

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Bright red catalytic converter . I am having problems running the car when it idles it wants to kill. Tonight I noticed the catalytic converter was bright red when I returned.

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The converter is clogged replace it.You probabley are getting less fuel mileage then usual and your car is probabley running hotter.

Posted on Jul 29, 2009

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Go t Auto zone have them do a code check if no codes detected replace both primary O2 sensors ( the O2 sensors before the catalytic converter). The idle air/fuel mixture is too rich.

Posted on Jul 29, 2009

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1 Answer

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Vacuum leaks work like this. A small hose breaks, you don't notice a engine problem, but the gas mileage goes down a bit. As the leak progresses, mileage goes down more. A large leak you notice the engine runs rough at idle. Combine this with clogged air, fuel filters and clogged catalytic converters and it will start killing the engine at stops and eventually go down the road. But to answer your question, No the line going to the diff, wont affect the engine performance. Because the PCM will compensate for the small leak. More fuel.

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Engine running rich


Sounds like a dead coil pack and needs replaced cause you're getting no fire to those plugs and causing a rough idle. Another thing is, that catalytic converter will only turn red because it's plugged up and needs replaced. Have that checked out friend.

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2001 Mazda MPV lost power while accelerating on to highway. I have no codes on scanner and no engine light. Idles OK but placing transmission in drive and holding brakes @ 2000 rpm, engine starts to lose...


You got it, definetely is the symptoms of a bad catalytic converter including the smell.
Fortunately there is only one
Unfortunately they are very costly
You may also notice that if the vehicle is idling for awhile and you look underneath the exhaust may be glowing red in some areas, extremely hot
Hope this helps

Jan 20, 2011 | 2001 Mazda MPV

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Lost power , ruff idle , stalls at stop. hard start . idles ruff . when put into gear . it stalls


sounds like your catalytic converter is clogged and not letting your exhaust gasses escape.. have a quality muffler shop check it out. you will notice because it will be red hot..

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