2001 Trooper, Spark Plug woes

[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]

Originally Posted by 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

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