i would not worryabout it,it just reconized that the coil packs were removed. after about 3 to 5 starts the light will go out. nothing to worry about.

 

Thanks SuperDak05, I thought I might have done something wrong. Good to know.

 

I just changed mine out this morning...I just started the truck to make sure it started...It seemed to idle alot better.

The job was quite easy except for the spark plug rubber boot getting stuck on one of the new plugs after it had been installed. That was a pain[:@]! Besides that everyone was ok, some easier than others

 

I have the 3923's in my new 5.9. Seem to be ok for now. I've always had the Bosch Platinum +4's in my durango,no problems. I'm going to see if I can switch my plugs during the dyno and see if there is a difference. They monitor pinging,misfires,a/f ratio,etc during the dyno. I still don't understand howeveryone thinks theplatinums are "terrible"? They have a hotter spark, when used with cheap fuel, probably causes pinging...

 

FWIW, I put in a set of 3922's in my HO today. She was running well prior to the changeover (about 19k in miles) but due to all our discusion I decided to change 'em out. Went smoothly. I did unhook the neg battery terminal due to the air intake tube/sensor being removed to access the coils. So, no MIL came on after the install (not sure if it was b/c I did unhook, or what). She does still run well, and this HO always has had a "bouncy" idle. She does roar down the road, that's for sure! *edit* I gauged them .040".

 

With these totally computer controled vehicles it seems to me that before any mod you should disconnect the battery to reset the computer. The 3923's I believe are a colder plug so the computer will need to adjust to it.

 

Every 30K I went to the Stealership and i think it was$1.45 a pc.& it took me about an hour to do,if you do a search on my thread starters you'll see my before & after pics of the old plugs.
I did notice a diff when I changed them.

Blu_

 

I'm starting to think mine's ready for new spark plugs. It's been idling rather rough, especially on start up, recently. Mine's got almost 23,000 miles on it, but I think I'll probably do the change at the next service (which should be pretty soon).

 

I'll be changing mine when I get the chance, already have the plugs. Only got 18k or so but the plugs are cheap anyways.

 

I need to change mine, im at 23k. going to change the motor oil, rear oil, spark plugs and maybe do a 180 thermastat with amsoil coolent too. should be in the next week or two