E 3 plugs
Pro
Joined: Apr 2009
Posts: 569
Likes: 3
From: Florida
If or when you get a charging system light...it won't be your alternator. You will need to put some new AC Delco plugs back in to correct the problem. Not sure why, but many others have experienced that problem.
Instructor
Joined: Mar 2011
Posts: 153
Likes: 0
From: Watertown SD
I had some E3's in my 69 nova. They worked great so I put them in my 2000 yukon when it was time for a plug change. They lasted 700 miles, then threw codes and my yukon shook, spit, and sputtered. I figured it couldn't be my plugs since they were new. I couldn't figure it out on my own, so I took my vehicle to the shop. Turned out to be the plugs. The shop told me the E3's dont work well in cold weather. I had an E3 in my snowblower, and that took a crap too. From now on, I will stick to what brand came in my vehicles new.
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
Most reposnses you will get from those plugs will be negative. I asked about the several months ago because I saw them featured on the speed channel, and a few here have tried them with negative results. You would be better off going back to the stock plugs.
Instructor
Joined: Dec 2005
Posts: 188
Likes: 5
From: Was Los Angeles, now Phoenix, Arizona
Word on the street is EMI from some spark plug manufacturers including the E3 causes late model vehicles with ECUs to be un-happy. Best bet is to stick with manufacturer recommendations
Burning Brakes
Joined: Jun 2008
Posts: 1,214
Likes: 3
From: CA
I run E3 plugs on my 02 Avalanche and have about 40k miles on them with no problem. However, I wouldn't run them on my Vette bcuz of all the bad reviews I hear on the forum. I just run the TR55s with great results and at a cheaper price.
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Burning Brakes
Joined: Jun 2008
Posts: 1,214
Likes: 3
From: CA
Ya it's pretty much a hit or miss kinda thing with aftermarket plugs. Every Vette that I've ever worked on had NGKs installed and not one has reported problems. I wonder if it also has something to do with the plug wires.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
In my case, I was one of those that had the charging system issue with NGK plugs and when I went back to AC Delco's, the problem went away. The wires were not changed.
