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glowing red exhaust

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Old 09-24-2009, 07:38 PM
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so i did a engine swap cuz my last one was foobared i swaped the same thing in f23. and first my iacv was actn up then it started workn right but my car dies some time and i gotta play with the gas to start so on my way home it died so i could smell hott metal do i looked under the car and my cat was glowing red hot i think it might be clogged what do u think
Old 09-24-2009, 07:53 PM
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Just your cat? or the header and all? heat sheild might be in the way to see if the exhaust manifold was glowing, but some one in the past posted somehting similiar and the diagnosis was incorrect valve timing/overlap. ANyone else chime in and help? thats just my guess... just trying to help
Old 09-24-2009, 08:02 PM
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Default Re: glowing red exhaust

didnt see headers glowing just cat not down pipe engine has 100k miles on it and never been opend up stock timing belt
Old 09-24-2009, 08:08 PM
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Okay just tryin to help and offer an opinion my man. Could be clogged cat as stated, but i fail to rationale how that could cause it to get just that hot.. maybe someone else will chime in and try and help, until then..hope it all works out man
Old 09-24-2009, 08:23 PM
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Default Re: glowing red exhaust

yea, it could be clogged. i know that with both of my f23a1 6g's that ive owned, both of their cats went bad right around 100k miles. so that could be your problem...it sounds like it is.
Old 09-24-2009, 09:46 PM
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Default Re: glowing red exhaust

def. sounds like a clogged cat
Old 09-24-2009, 10:04 PM
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yeah dude...get that fixed man...ive seen where the cat gets hot and if driven for a while that hot it can actually catch the carpet on fire. not to mention melt anything close to it.
Old 09-24-2009, 10:55 PM
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Default Re: glowing red exhaust

cat is clogged...100% sure as ive seen it happen before....figure you cat at normal operation is at temps upward of 1500 degrees...being clogged would turn it red hot n stall the car
Old 09-24-2009, 11:54 PM
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Default Re: glowing red exhaust

touch it. It might just be an optical illusion.
Old 09-25-2009, 03:38 AM
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Default Re: glowing red exhaust

Originally Posted by 90LSpimpin
touch it. It might just be an optical illusion.
i lol'ed haha
Old 09-25-2009, 07:08 AM
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Default Re: glowing red exhaust

lol ill get my friend to touch it im pretty sure its the cat ill con a friend into towing home it died maybe a 1/4 of a mile from my house lol it killed me so what do u guys think about the strait thru cats
Old 09-25-2009, 09:50 AM
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Default Re: glowing red exhaust

lulz.. Funny shyt.. "touch it".. Anyway.. Yea, replace the cat.. Either OEM or good "quality" high flow.. **** if your dont care about emissions or there are none in your state. straight pipe..
Get that timing belt done ASAP or you will really be stranded needing a ride home..
Old 09-25-2009, 03:31 PM
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Default Re: glowing red exhaust

Originally Posted by bryce warburton
so i did a engine swap cuz my last one was foobared i swaped the same thing in f23. and first my iacv was actn up then it started workn right but my car dies some time and i gotta play with the gas to start so on my way home it died so i could smell hott metal do i looked under the car and my cat was glowing red hot i think it might be clogged what do u think
It would appear that you're dealing with a super rich condition which is overworking the catalytic converter. That's why it was glowing. I've seen them light up under a car like a light was on, and I've also seen a dealer loose a car off the carrier when the interior ignited from the heat.
Obviously, this isn't good for the converter. It can tolerate small incursions into these heat ranges, but it most often leads to melted converter elements. (which also leads to clogged converters)
The 'dying" comments could be referring to fouled plugs which would confirm a mixture issue
Old 09-25-2009, 03:39 PM
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Default Re: glowing red exhaust

Originally Posted by P_Adams
It would appear that you're dealing with a super rich condition which is overworking the catalytic converter. That's why it was glowing. I've seen them light up under a car like a light was on, and I've also seen a dealer loose a car off the carrier when the interior ignited from the heat.
Obviously, this isn't good for the converter. It can tolerate small incursions into these heat ranges, but it most often leads to melted converter elements. (which also leads to clogged converters)
The 'dying" comments could be referring to fouled plugs which would confirm a mixture issue
x2
Old 09-24-2017, 10:12 PM
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Default Re: glowing red exhaust

2010 odyssey exl shows PO430 Catalyst system below efficiency threshold bank 2 and downpipe glow red after a couple minutes after starting found that the cat is blocked..
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