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Q:

rough idle when cold and will stall when put in drive on 1990 Nissan Pathfinder

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
if my ac is running the idle is worse, i replaced plugs recently w/o good gap tool,
(2) Answers
Basics should be inspected for rough Idle. Proper Base Idle speed adjustment should be performed. Further inspection of Throttle body for carbon build up on throttle blade will cause a low Idle condition. Engine should be inspected for vacuum leaks. Ignition system should be inspected . Fuel pressure should be inspected for proper fuel pressure and volume. Your local repair shop should perform a full diagnostic and also inspect computer control system for trouble codes.