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My catalyic converter is cherry red - 1997 Ford Explorer AWD

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  • yadayada
    yadayada Aug 20, 2010




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The catalytic converter is the hotest component on a vehicle during operation. I have seen them hot enouigh to glow at night but that was after some hard runs/racing. However, if the vehicle is driven regularly it should not get hot enough to glow. Possible cause would be running to rich "they are designed to burn off excessive fuel"
Please vote if this helps

Posted on Aug 20, 2010


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Catalytic converter turns red hot on my 2002 ford escape

The cherry red is probably due to raw gasoline being burned in the converter. Since the engine isn't running right (and I'm surprised you didn't say the Check Engine light was on), there seems to be some kind of valve timing issue or perhaps a burnt valve that is causing at least one cylinder to not fire and thus expel the fuel/air mixture into the exhaust stream. This can be confirmed with a compression check of the cylinders. If they are all low, then there is a problem with valve timing, possible a jumped belt/chain. If only one cylinder is low, then a burnt or broken valve is more likely.

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My car just cut off,when try to restart it spits back thru breather ,runs a little but willnot accelerate,also when it does finally start,cataylic converter gets cherry red

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I have injector pulse.switched coils .still miss fire on 2/4/6/ converter is cherry red.

If the catalytic converter is cherry red there are only a few things that will cause this, extreme over-fueling causing excess unburned fuel to enter the exhaust and overheat the catalytic converter. You will need which cylinder(s) is misfiring, you can ID the problem cylinder by checking the diagnostic OBD2 fault codes, you will have a P03XX in memory, with the XX's being the cylinder number that is misfiring. The possibilities are this, you have an injector that is stuck open or a low cylinder compression issue or a very lean condition that keeps the fuel from burning like a big vacuum leak. Also address any other fault codes found in the OBD2 fault code testing. DO NOT CONTINUE TO RUN THE ENGINE TO THE POINT THE CATAYLUTIC CONVERTER TURNS CHERRY RED! YOU WILL RUIN A VERY EXPENSIVE PART IF YOY HAVEN'T ALREADY

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I have a Audi A4 1997. It will not shift past 20mph after it warms up. There is something that looks like a muffler under the hood to the left, that is getting cherry red. Could it be some kind of exhaust...

You hit the nail on the head! The cherry red thing would be your converter. Sounds like your converter is plugged the question is why. You have a 97 car so it would not be too uncommon that the converter simply broke apart inside which is causing the restriction, Or is something wrong with the furl management system that caused the engine to run rich and melt the inside of the converter. It sounds like your going to have to replace the converter and have the fuel system checked. There may be noting wrong with it but a converter usually is not cheap and better to be safe then sorry. Good luck!

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My 2000 exterra started running like there was watter in the fuel iput isoprople alcahal in ranit five miles it cleared up ran fine for a day the runabilty problem came back and it died on the way home...

If the pipe got cherry red while trying to start, it was because of unburnt fuel entering the catalytic converter, most likely. Check for signs of plug fouling and injectors hanging open. You're likely flooding your engine due to dirt accumulation in an injector.

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hi there 3 options available mid range is 87usd from autoparts its the eastern model hope this helps if so please rate this answer thanks

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sound lik a tranny problem. catalyic convertor reduced speed and they wud b red hot if they the problem check it out. wen it do it again just lok under da car.

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you might need a new catalyic converter
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