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Cat and 1st 1/2 Muffler Glowing Red

The stock 88 930 was running fine all day yesterday - put 100+ miles on it. Took it on a three mile drive tonight. When I pulled over I noticed it was idling real high - about 2100 rpm. I then got out of the car and noticed the engine was clicking, tinking and clacking - like it had just been driven real hard for awhile and was hot. I took a look at the back of the car and noticed the right side of the muffler was glowing red but not bright red. I could also see that the cat was red as well.

The temperature gauge was reading normal.

Anyone have any ideas of what might be going on?


Thanks-
Craig Backer

Last edited by fastbacker; 12-13-2007 at 09:23 PM..
Old 12-13-2007, 09:21 PM
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Same thing happened when we put a SC on my friend's Vette. Apparently the AF ratio was off and it was running lean.
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Old 12-13-2007, 09:36 PM
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Craig,

Normally when you see this the fuel mixture is off. In most cases it is rich. It's not a good idea to drive the car in this condition. If the cat gets too hot, you can ruin it.You need to get it checked at a shop.

JR
Old 12-14-2007, 03:47 AM
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AFR's are out of whack or dizzy jumped a tooth and ignition is way retarded.
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+1 Goran...
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Old 12-14-2007, 07:09 AM
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Old 12-14-2007, 04:36 PM
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