Big_Red9's latest activity
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BBig_Red9 replied to the thread 1997 Chevy Suburban K1500 P0420.Good evening folks, I have all the spark plugs out as you can see in the attached photo. #4 was the only one that came out looking a...
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BBig_Red9 replied to the thread 1997 Chevy Suburban K1500 P0420.After seeing everyone's input here today I decided to pony-up and buy a United Motor Products premium cap and rotor from RockAuto. It'll...
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BMy main take away from this forum is that the 5.7 vortec is very sensitive on the ignition side of things. Having myself come from...
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BYou are correct. As a thought experiment, let's remove the cats and replace them with an equal length of pipe. All upstream and...
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BThe brass contacts are way better than the aluminum ones for corrosion resistance too. Distributor cap is Very important on Vortecs...
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BJust a thought here: if you're getting humidity and moisture inside the cap bad enough to get this serious of corrosion, this...
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BBig_Red9 replied to the thread 1997 Chevy Suburban K1500 P0420.I believe there's some sort of screen in the housing that I have never taken a good look at. I'm hesitant to load up the parts cannon...
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BBig_Red9 replied to the thread 1997 Chevy Suburban K1500 P0420.The emissions testing in my area is a visual inspection of all emissions related components so if I remove them it would fail...
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BNo problem, new members do this all the time. These GMT400s look all the same on the outside, but there are unique 'features' with each...
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BHello again Big_Red9, The short answer is that once you get past a certain demand for power, on purpose the system goes from...
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BBig_Red9 replied to the thread 1997 Chevy Suburban K1500 P0420.Hello Road Trip, Here's pics I took last night of my cap and rotor. I didn't see any sign of damage on either part, but what's tough to...
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BGreetings Big_Red9, and Welcome to the GMT400 forum! That was a great introduction & problem description. About the only thing I'm...
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BJust wanted to jump back in and tell you that your understanding is correct. The feedback loop for the computer is indeed the upstream...
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BBig_Red9 replied to the thread 1997 Chevy Suburban K1500 P0420.So I drove her pretty hard on my way home from work. I floored it up a hill on the highway and, to my disbelief, I could not get it to...
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BBig_Red9 replied to the thread 1997 Chevy Suburban K1500 P0420.Thanks for the warm welcome and in-depth response! I should have included originally that this is a 5.7. Also, that 3 minute data snip...
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