i know this was discussed a while back about these and I had put mine in and they worked fine. Now lets go a few weeks forward and my truck idles funny in park and when it is in gear it will drop rpms and sometimes die. The only thing i can think of is the spark plugs. I thought it was my pcm but i did the relearn procedure and it still does it. I guess i'm gonna get some ac delco or autolite or something. I heard about the NGK's, how do they work on these trucks?

 

its funny how many people still run these things. lol i've got the ngk's in mine. seem to do fine as far as i know i changed them right before i went on deployment. wifes driving it now.

 

I was just talking to another guy about these plugs.....yes I was suckered into the big 4 deal, and yes my truck idles like ****. What part number NGK would I need for the 5.3L with mods listed below and is it worth going to them or should I just go back to the stock plugs? Also, is there any way to sell my Bosch's off and how much are the NGK's?

 

ngk's are cheap the tr55's stock # 3951 $2.95

 

I run the Iridium IX NGK's...coupled with the Taylor wires. I have to say I idle like I'm dead which in this case is a good thing, I was maybe considering the MSD Coil's but to the tune of $600...I may have to bow out.

Dave

 

I love my NGK's $12.83 for 8 plugs..cant beat that..

 

the +4boschs tend to perform well in smaller import engines that turn high rpms, I used a set on an older motor that was fouling alot and they helped (an origional 200 ci I6 in a '66 mustang 34 years old)

 

i guess i'll see if bosch will buy these back like it says on the box. I'll try the NGK's since i have heard alot of posative feedback on them.

 

at 124k i bought my truck and pulled the original AC platinums out. there really werent in bad shape, BUT judging from the overall condition of the truck, it had never seen WOT in it's life.

since AC iridiums cost the same as AC platinums, i used iridiums.