Ignition problems...
Thread Starter
Teching In
Joined: May 2007
Posts: 13
Likes: 0
From: Pax River, MD
Ignition problems... I just replaced the Bosch platinum plugs with NGK TR5 Iridiums, and a set of 8.5mm superconductor wires, and now I believe that the passenger side bank is not firing at all. The SES light just blinks when I start it, and the code comes up as multiple cylinder misfire. It smells as if running rich, seeing as how I believe to only have the 4 cylinders firing. It sucks, as it is beautiful weather, and I am stuck driving my Z/71 Tahoe... Any tech help? 
*THERE IS NO REASON FOR HUGE TEXT AND FONT
*THERE IS NO REASON FOR HUGE TEXT AND FONT
Last edited by CRAGER; May 18, 2007 at 11:00 PM.
Welcome to LS1 tech and thank you for using the extra large font lol.
9 out of 10 times it is simply a matter of not pressing the wires onto the plugs completely. You should hear two clicks when installing them. Go back out there and press those suckers on and I bet you'll be good to go.
9 out of 10 times it is simply a matter of not pressing the wires onto the plugs completely. You should hear two clicks when installing them. Go back out there and press those suckers on and I bet you'll be good to go.
Thread Starter
Teching In
Joined: May 2007
Posts: 13
Likes: 0
From: Pax River, MD
Heard both clicks... I have had this car since July 04... This is the second time I have changed the plugs, and had no problems last time. I have taken them off and put them back on multiple times, to the same problem... I don't think I shorted out any coils, but could it be the input before the coils that could have gone bad? This is my first Gen III, but my third experience with it, and have had no problems of this type with any of the prior...
Thread Starter
Teching In
Joined: May 2007
Posts: 13
Likes: 0
From: Pax River, MD
Ok, I paralleled this post on LS1 forum, and got a few other possibilities, and have tried them all, yet to no avail... I'm getting desperate here, and would rather hang myself than drop it off for some shop to figure out... any other options?
