AudiMan85
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« on: April 16, 2015, 06:06:08 PM »
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Ok, I did the coil swap to push on coils on my 2.7T A6. The coil swap has been fine for last year or so. Stage 2 tune by Daz. No misfires codes etc.
I got the codes for open circuit on cylinders 4&5 and flashing misfire on cylinders 5 only. Today I went thru my ICM delete wiring and changed from butt connectors and soldered and shrink tubed the wires hoping my problem was there. I have swapped coils around and problem stayed on 4 &5. Feels fine underboost, pulls ok, tuned for w/m 50/50 running straight water so idk if that's the slightly less power.
When I wired the coil plugs/connections I soldered the 2 grounds to the one ground on the 5 wire harness. I know cyl. 4 only has one ground. Should I run a 2,3,5,6 separate ground to valve cover like the 1.8Ts? Or should I just check my wiring on 4 & 5 coils. Just looking for input before I go into the wiring. Not much length to the stock wires to be cutting and redoing. There all soldered and shrink wrapped and taped up. I thought ICM wires since it effects more then one set of coils.
Also, at idle there is not codes on vcds. Once I revv the engine and check I cyl.5 and if I revv higher or drive a code will show up quickly for 4 & 5. None at idle tho.
Thanks in advance.
I'd provide a log but letting car cool off so I can go thru wires if it seems like it's the issue. Boost and pulls fine.
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« Last Edit: April 16, 2015, 07:53:49 PM by AudiMan85 »
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