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Old 11-17-2003, 03:27 PM   #1
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Default Trouble code P0200

I actually got the blower on my truck today and drove it for the first time. Now I threw a code that says P0200 Injector circuit malfunction. That code doesnt talk about a specific injector so what does that mean? Anyone have any ideas? DOes it have anything to do with tuning???

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Old 11-17-2003, 10:30 PM   #2
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does the truck still run alright? is it smoking like it's rich? black smoke? it is possible that you may have locked/fried an injector. check the connectors to make sure that none have been pulled off or are loose. are you using a FMU?
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Old 11-18-2003, 03:26 AM   #3
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No the truck isnt running right, It ran good for about 20 minutes or so, then the next time I started it, it threw that code. No its not smoking or anything to say its running rich, its seems like 1 or maybe even 2 of them arent doing anything. No im not using the FMU
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Old 11-18-2003, 07:25 AM   #4
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Are you using any tuning ?Aka ls1edit ?
or Larger injectors ?
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Old 11-18-2003, 10:58 AM   #5
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I wouldn't run it much without that FMU, I'm not sure how it works, but I've heard of people running it without it letting the engine go

If you have bigger injectors and have tuned for them, nevermind then.
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Old 11-18-2003, 11:25 AM   #6
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He has big injectors and LS1 edit tuning. I doubt he's running the FMU.
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Old 11-18-2003, 11:47 AM   #7
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It said half way installed ... so who knows about that. If it's still half way installed, I would complete the instalation and see if it's still going on. You may go to AutoZone after completion and get them to check and reset the code. Watch for it to come back on after that.
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Old 11-18-2003, 01:25 PM   #8
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The install is done, and i have installed the 42lb injectors and it is tuned. And no I dont need the FMU with that setup. Also I have EFIlive to check and reset codes. Thats how i got the code in the first place

My signature is a little out of date
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Old 11-18-2003, 04:00 PM   #9
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Deosn't EFILive have n injector pulsewidht counter or something? You might try those and see if you have one out of line or something.
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Old 11-18-2003, 08:46 PM   #10
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yea, you don't need the FMU with the injectors you have if you scaled them right. have you narrowed it down to any particular cylinders? use a stethescope/long screwdriver to listen to each injector to see if it is firing while it is idling. the pulse width won't tell you what injector, just what bank. what happens if you reset the code? did you change anything else when you did the install?
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Old 11-18-2003, 08:46 PM
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