Describe hoe to clean a EGR vavle on a 96 Nissan

Not easy to see, but on drivers side of engine underneath intake manifold, so look for airflow intake tube, the larger air tube, and it is just below and to the firewall about middle of engine top to bottom. Hose comes out of it and two bolts hold it in, pretty easy to see once you know where it is located, but difficult to change. Sometimes just cleaning hose out will solve problem. Worth a try to buy EGR cleaner and spray and run a wire inside hose to loosen up carbon.
CERACOAT-NANOTECH.com

Clean or replace EGR.

my fuse n my 96 nissan maxima keep blowing can u tell me the problem

vaccuum is going to be the problem from the symptoms u describe,check all vaccuum lines,breather,

EGR valve, throttle position sensor or idle air valve should all be checked

blown head gasket. black smoke means that oil is getting into the cylinder.

The EGR solenoid is located towards the rear of the car from the EGR vavle and slightly towards the center. It kind of stands on end. There is a vacuum line coming out the top (port C) and a green 2 wire connector plugged into it. Hope this helps.

Clogged EGR valve may need to be replaced or cleaned.

http://www.autozone.com/az/cds/en_us/0900823d/80/1f/4e/28/0900823d801f4e28/repairInfoPages.htm
http://www.autozone.com/az/cds/en_us/0900823d/80/1f/4c/a2/0900823d801f4ca2/repairInfoPages.htm

http://forums.maxima.org/4th-generation-maxima-1995-1999/562989-egr-valve-issue.html

I would look into base idle adjustment.