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-HELP-My turbo car is running on half the motor WTF?

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Old 08-30-2011 | 10:39 PM
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Default -HELP-My turbo car is running on half the motor WTF?

Well ive had the car started a handfull of times, and just pulled the plugs and found out that the drivers side bank is all messed up. The number 1,5 plugs new wial the 3,7 plugs are super black and rich. The pictures was taken exactly as the plugs sit in the motor. So far i have checked the following:

-All cylinders have spark
-Injectors are getting power
-I switched the injectors on the fuel rail and it made zero difference
-Changed plugs multiple times no difference-same results
-Car definitely is untuned, and loud yet i can still tell it is missing badly.

Im going to do a compression test first thing tomorrow morning, and hopefully its nothing mechanical!

SO ANY IDEAS ON WTF IS THE PROBLEM????

Old 08-30-2011 | 11:29 PM
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Thats a bit crazy man, tell us some more about your setup, old motor? New build? What intake and heads?
Old 08-30-2011 | 11:37 PM
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370 forged
edelbrock intake
317 heads
GT55-94 turbo
TR8 plugs gapped to .028 if that helps
Old 08-30-2011 | 11:58 PM
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edit: nevermind
Old 08-31-2011 | 12:17 AM
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2 step?
stock computer?
Old 08-31-2011 | 12:20 AM
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no 2 step, yes stock pcm. I did a coil relocation, is it possible i have some wires wrong? Sounds tarded, but how exactly could i check to make sure the wires are right?
Old 08-31-2011 | 12:31 AM
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First check for spark on each cylinder on that bank. That will eliminate if you are getting spark at all on those cylinders. Look up the wiring diagram for the coils, you probably have the plugs mixed up. Just look at the diagram, match the color wires, then trace that coils spark plug wire to the cylinder. You can also swap the spark plug wires and that will give you a definite answer if they are crossed. Try swapping 3 and 7 around, that may cure it.
Old 08-31-2011 | 12:46 AM
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know where to get a color coded diagram?
Old 08-31-2011 | 01:27 AM
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https://ls1tech.com/forums/conversio...swap-faqs.html

Pick your year PCM and look for IC (Cyl#) Control. That will be the color the pcm fires the coil drivers on.
Old 08-31-2011 | 06:32 AM
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A, Black, Ground
B, Brown, Reference Low
C, Ignition Control, 1/Ppl 3/LtBlu 5/DkGrn 7/Red 2/RedWht 4/DkGrnWht 6/LtBluWht 8/PpplWht
D, Pink, Hot in run and start, Inj 2 15 amp



I had the same issue when I relocated my coils. It's user error.
Old 08-31-2011 | 09:03 AM
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I had this same problem man. My O2 sensor died on Bank 2.
Old 08-31-2011 | 10:27 AM
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Originally Posted by Need_a_Camaro
I had the same issue when I relocated my coils. It's user error.
I figured thats all he did too lol
Old 08-31-2011 | 10:56 AM
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I hope you guys are right. I will check at lunch today. Thanks
Old 08-31-2011 | 11:20 AM
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What coils do you have? I have run into this problem in the past with MSD Coils. Turns out it was bad coils
Old 08-31-2011 | 05:20 PM
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I had a similar problem many years ago. My car had been worked on quite a bit. I had 3 cylinders randomly misfiring. I checked things as stated above but no luck. I used an injector noid to verify they were getting voltage, so I was left scratching my head.

I decided to look further. I used a voltmeter to check continuity between each injector and the ECU. What I found was although the voltage was hitting, the 3 bad cylinders had faulty wiring. Turns out the copper strands inside the insulation were broken from being handled so much. I ordered 3 pigtails and replaced them. Goodbye misfire. So the way to check is to place one end of your voltmeter on the hot side of the injector plug, and place the other voltmeter lead on the appropriate pin on the ECU. While doing this, wiggle the injector harness around to see if you lose continuity. it isn't that hard to do and you can eliminate that as a potential problem.
Old 09-01-2011 | 12:03 AM
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PROBLEM SOLVED. The coil harness was put on backwards when i relocated the coilpacks. Human error!!! I am uploading a vid right know. Standby
Old 09-01-2011 | 12:33 AM
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Originally Posted by BlackWS666
PROBLEM SOLVED. The coil harness was put on backwards when i relocated the coilpacks. Human error!!! I am uploading a vid right know. Standby
So the #7 pack was powering the #1 plug? Ha yeah I guess that would do it. Glad you got it figured out!
Old 09-01-2011 | 01:16 AM
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Originally Posted by Adam86
So the #7 pack was powering the #1 plug? Ha yeah I guess that would do it. Glad you got it figured out!
Yea no **** man!! haha. Runs better know! Check it out

http://www.youtube.com/watch?v=11qQyCtPIxU
Old 09-01-2011 | 08:44 AM
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Pretty common mistake actually, glad you figured it out!
Old 09-01-2011 | 06:12 PM
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Yup, I knew exactly what it was. Don't ask me how I knew... haha. Thing is beast! Glad you got it figured out!




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