C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Slight stumble at about 2100rpm

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Old 06-12-2007, 01:10 AM
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Charley "Harley"
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Default Slight stumble at about 2100rpm

I need a little input.........I'm a carburetor and points ignition sort of guy, just starting to learn about the computer, fuel injection and hidden behind the water pump distributor. My motor is stock with a 6 speed tranny. It seems to have a slight uneven idle and when I start going through the gears, it's got a real slight but noticeable stumble (just momentary) when I come up to about 2100rpm, then goes away. It only occurs at that point in the rev. I've recently replaced the "distributor". Like I say, I'm JUST starting to learn these motors and the new technology so anybody got any help. Would I look in timing, injection system or what?
Old 06-12-2007, 01:54 PM
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vetteboy95
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Check all of the wires for arcing, the coil, ICM(Ignition Control Module). Seems a lot of us have been having this problem.
Old 06-12-2007, 02:35 PM
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Darkgh0st
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Welcome to the "Problems @ 2000 RPM" Club

http://forums.corvetteforum.com/show....php?t=1711949

If you find your problem let me know. I've been trying for 6 months
Old 06-12-2007, 03:59 PM
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pcolt94
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Charley, Please fill in your profile so we all know what year of car and engine it is, it will help, lots of variations.

Just for starters, get yourself a fuel pressure gauge to connect to the fuel rail. A fuel pressure check is a good start to troubleshooting these problems. And you will always use that gauge, it takes the guess work out of it.

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