Postby rap633 » Mon Aug 30, 2010 8:26 pm
I am new to this board, however, I am not new to wrenching. I can't put 4 cats on a vehicle that only takes 2. For part of the manufacturing year labeled 2001 the Pathfinder had a manifold cat as well as a downstream cat on each exhaust. I have listed the part#s from Eastern Catalytic.
LR 6755-05033577
LF 6755-05033579
RR 6755-05033578
RF 6755-05033580
I appreciate you taking the time to post a reply, but in this case I was hoping I might find someone who had the high NO problem. I know the basics that create the issue. Primary culprit appears to be excessively high combution chamber temps. The first thing recomended to check is the EGR valve and vacuum lines to the valve. I have found conflicting info as to whether or not this vehicle has an EGR valve.
Any help anyone could offer would be greatly appreciated.
Thanks,
Richard