glowing passenger manifold
11-24-2010, 11:00 AM
#1
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glowing passenger manifold i have a 95 lt1 firebird. just did plugs and wires thinking that may have caused my hesitation/surging. well now it doesnt do it quite as bad but now i notice the passenger side manifold glows red near cylinder 6 and 8 at night. what could this be? could the o2 sensors be causing a rich/lean condition. they are original o2's i believe. car has 76,000 miles on it. maybe the cat could be clogged as well causing it? any help is greatly appreciated.
11-24-2010, 11:09 AM
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thats what i was thining because the pasenger side is the side closest to the cat. its a single cat car. obd1, might just gut it and put it back,wont throw a code
11-24-2010, 12:03 PM
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I've had a couple of cats collapse/fail on my LT1. Each time, my car would hardly run at all, and the manifolds were glowing when I was able to eventually pop the hood. The last time it happened, I took it to Midas and had the cat replaced. It turns out that for the price of replacing a cat, Midas will just gut the one that's already on your car. I put my car into storage within weeks of that event, and I didn't realize what they had done until years later. You can't trust anyone anymore.
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11-27-2010, 02:34 AM
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On a buddys 93 Z28, I bought a Magnaflow stock replacement cat for around $65 shipped off ebay. Put it on and the car passed Tx emissions with flying colors.
11-27-2010, 10:34 PM
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12-01-2010, 12:18 AM
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well i just cut the cat off and it has already been gutted it looks like, so does this mean maybe the o2 sensors could be causing the glowing manifold on the passenger side?
