I signed up for a website that gave you wiring schematics. What the hell is that website. I haven't used it in awhile. Lame *** didn't save it here at work.

I got a P0351 code. Ignition Coil 1 Control Circuit-Peak primary circuit current not achieved with maximum dwell voltage.

Anybody have experience with this code? 111,000 miles on the coils, bad #1 coil?

 

doh... www.alldata.com nevermind got it. How about the code anybody?

 

90% of the time its just the coil. Could also be poor connection or in the wiring somwhere. I have seen this code many times it was always the coil on every vehicle for me.

 

Yeh, it is a pretty specific code, that's what I am "guessing". Any idea how much these coils cost? I should (as long as they aren't too expensive) replace them all.

How about this picture...think this is related? Just driving along, let off the throttle and....

 

I have a couple of coils for sale. They are from an 04 Silverado with 6.0 with 23,xxx miles on it. Let me know if you want them.

Danny

 

Im not sure how much the coils cost. They were all on customers cars at work. I just sign for them and put them on lol They were in stock at the zone down here. Also check for a melted harness, I have seen that before.

As far as that Graph. It looks like some creative DFCO settings. But may be related if you havent been playing with DFCO and it started around the same time??

 

https://www.performancetrucks.net/fo...d.php?t=355955

 

Thanx 04Black, I know what the code is.

First let me tell ya, the code...turns out, I am troubleshooting my fuel system and I got fuel on one of the coils (#1 to be exact) and I guess it was enough to short or cause the pcm not to like what it was seeing.

Theeeeeeeeeen at the same time along with my fuel pressure and pumps failing I just loaded a tune that EC_Tune over at HPT was helping with on my o2 settings and he did some editing to my dfco. SO you are very right, that was dfco happening. I have never experienced it nor was I expecting it. Imagine seeing the code come up then dfco kicking in AND theeen inline fails along with the intank dying slowly. Ugh. My brain is tired.

I got a new inline, just need to replace the stocker now, it's only putting 45 psi to the inline.

I am addicted to this dfco though. It's my new "gotta screw with everything".

 

Glad to hear you got it all figured out. Keep us updated on the DFCO and MPG gains. There is BIG$$$ in economy tuning with gas prices they way they are.