Nissan Repair: 98 nissan altima, fuel pressure solenoid, fuel pressure regulator

Question
rough idle when warm. fuel pressure solenoid problem on code. where is the fuel pressure solenoid.

Answer
Michael,

Fuel pressure solenoid would be the fuel pressure regulator?  If so it is on the fuel rail next to the intake.  If it is the relay you are talking about it should be under the hood in the fuse relay box.  If the problem is with the canister solenoid that controls gas vapors it is in the back by the gas tank.  A black box that has hoses to and from the gas tank.  There will be an electronic valve that controls it and that is what would need to be replaced.  I did not know which item you desired so I listed all three.  If you email me back with a code number I can narrow it down.