did you check this thread? CODE 71 thread

i was told at a check only that high NOx is from that little black round deal... the egr recirculator.. the plunger in it rips and it stops working.. 50 bux from the dealer.. minus a discount.

a little cheaper than a cat.. good luck..

i'm having the same problem.. i had to reset my light before i took it to the smog station.. luckily it didn't come on while i was there laugh

89 4runner V6 33 MT/R GoodYear,the only way to go. open front and e-locker rear.4:88....Truck's needs are deeper than my wallet. so i got another truck <img src="/forums/images/graemlins/smile.gif" alt="" /> 85 4R I6 T 35 TRD rear dual case 4.56 lets go wheeling :P