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

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Old Apr 27, 2006 | 07:05 PM
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As you guys probably know I have been fighting a rough idle. I have tried everything so I tried to check the wires, the fsm didnt tell me crap---I know the cfi guy will disagree but I found the answer in a chiltons book(going to wipe my butt with the fsm) all the wires ohmed at about 5 to 6 thousand except for #1 was 11 thousand which is still ok as far as the book says . Anyone have some numbers from there tests --and do mine sound normal?
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Old Apr 27, 2006 | 07:46 PM
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you know, one at 11k would worry me.
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Old Apr 28, 2006 | 01:19 PM
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It is a long wire which they say will be higher than a short wire but then again #2 is long and that one was around six thousand
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Old Apr 28, 2006 | 01:49 PM
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Originally Posted by mudslide
As you guys probably know I have been fighting a rough idle. I have tried everything so I tried to check the wires, the fsm didnt tell me crap---I know the cfi guy will disagree but I found the answer in a chiltons book(going to wipe my butt with the fsm) all the wires ohmed at about 5 to 6 thousand except for #1 was 11 thousand which is still ok as far as the book says . Anyone have some numbers from there tests --and do mine sound normal?
My vettes idle has been rough also. It goes up and down and up and down, I have a manual trans and so far I think the plug wires at least 1 of them is bad. We were playing with them the other day just touching and putting pressure on them at the cap and the car darn near shut off then we let go and it went back up. Maybe this info helps.
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Old Apr 28, 2006 | 01:54 PM
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5000 ohms per foot. 2 ft.=10,000 ohms, 1 1/2 foot=7500 ohms. these don't have to be exact, but there supposed to ohm close to that.If number 1 is 2 ft.-that's fine. You don't want to find any that read 0L
on a digital ohms meter. Like wise you don't want a 2 ft. long plug wire reading 5000 ohms.

Last edited by rick lambert; Apr 28, 2006 at 01:57 PM.
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Old Apr 28, 2006 | 06:52 PM
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Now im really confused about the ohms and when I look at changeing wires on the passenger side --well one more cocktail; drivers side is cake but when I changed plugs on the right side I had to take off the inner fender well and some polution crap to change the plugs so I guess a wire change will be an 8 drink event--one per wire
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Old Apr 29, 2006 | 09:54 AM
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Now now guys, lets simmer down! The FSM is a really helpfull tool thou, never realized it until I got one.
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Old Apr 29, 2006 | 10:03 AM
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Your right jimmers ,just not as good as hearing from someone who has gone through what you are going through and can explain it step by step-that is really what most of the guys in here do-- to those guys!!
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Old Apr 29, 2006 | 01:02 PM
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This is what makes the forum that much more interesting...A good old argument. I've washed my hands.

Originally Posted by rick lambert
5000 ohms per foot. 2 ft.=10,000 ohms, 1 1/2 foot=7500 ohms. these don't have to be exact, but there supposed to ohm close to that.If number 1 is 2 ft.-that's fine. You don't want to find any that read 0L
on a digital ohms meter. Like wise you don't want a 2 ft. long plug wire reading 5000 ohms.
with Rick, looks like a good place to start.
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