Its hard to diagnose over the internet, but, it could be a few things...including the distributor.

The MAF sensor could be fouled, the fuel pump could be going south, and so forth.

How many miles on it, and, have you done any modifications, added a K&N air filter, done any recent maintenance, or not done it, changed anything from stock, etc?

Aftermarket dizzies are notoriously wonky...one time, I went through 14 to get one working one.



Edited by TJ (28/10/13 06:20 AM)
_________________________
- TJ

2001 Xterra '03 VG33, SE 5 spd, 305/70/16's, Revolvers, UBSkidderz, Doubled AAL's, 3"SL/2"BL, winch/bumpers, skids, sliders, OBA, Snorkel, pine stripes....

Friends don't let friends drive stock.

http://www.gifsoup.com/view/501230/tj-tackling-crawlers-ridge-o.gif