Troop2fish

Changed the plugs in my '01 Trooper the other day with a set of Bosch Platinums. I now have a check engine like. Took it to A.Z. to pull the codes. Misfire. Took it to dealer and they read the codes and told me that I can ONLY use Denso K16pr-p11 plugs. Apparently the computer knows when the resistance is different. So my question is this...

A) Where can I find those. No one seems to have them and dealer wants $15 bucks each.

B) Does anyone know of another brand that will emulate the Denso specs?

Thanks

cody7

You might want to try NGK plats, but typically I would stick with the OEM. The problem I think is that the crank sensor isn't registering the correct bang so to speak and I think the codes that are random/multiple misfire. Those plugs should go about at least 60000 miles though.

rodeo02

troop2fish- if you search online, you can find the denso's that came with your truck for well under $10/ea shipped to your door. (I had a site in my fav's & cant find it now!) They are $$$, but anything else causes problems with 2000 & up . Like cody7 says, these plugs are atleast good for 60Kmi+. You just need to pull, inspect, & re anti-seize them. every 30Kmi or so. I've seen nippondenso's with 100Kmi on them still have pleanty of life left in them. I think that's why they are so darn expensive!

G/luck
Joel

rodeo02

Here's a site with denso plugs for $7.50/ea: http://www.pickproparts.com/PartsLis...ategoryID=7212
G/luck
Joel

Troop2fish

Joel,

Thanks so much! Really appreciate the help. Went to the site and saw them there. One more question, is there any reason to go with the Iridiums or should I stay with the OEM's?

Dean

rodeo02

Stay with OEM for 2000+ the iridiums might work fine, but IMO- it's not worth the risk of them giving a CEL or performance issues! We know the OEM densos work great. May as well stick with them. Be sure to put a tiny dab of anti-seize on the plug threads & lube up the inside of the plug boot with dielectric grease so they come off the plugs easy next time.
G/luck
Joel