[vortmax]

Ha, I'm just good for the obvious "I think its broken" comments.

If you have a buddy with a scanner, take a look at your fuel trim and make sure it and your cross counts are in range. A lazy O2 could be making you run rich.

I always thought you reduced NOx by increasing engine temp...which is why the Dakota came stock with a 190 T-stat instead of the 180

 

[AmberFireDaK]

I already checked the 02.... cross counts look good, but apparently you need a special scanner to be able to read them accurately

I guess I'll be buying new cats

 

[ScojoDak]

82 post and it's still not fixed? Sheesh!

 

[l1tech]

I always thought you reduced NOx by increasing engine temp...which is why the Dakota came stock with a 190 T-stat instead of the 180

Increased cylinder temps = increased nox

 

[AmberFireDaK]

well the truck is put away now.... I guess I'll buy and install new cats over the winter.

Thanks to everyone for the input