The coolant outlet on the front of the lower intake manifold may develop a coolant leak.
Car Problem Reports
Nissan Frontier Coolant Outlet on Lower Intake Maniflod May Leak
Nissan Frontier Problem
Engine Affected: 3.3L V6
Visitor, 2002 Nissan Frontier, 3.3L V6, 160,000 mi
Leaking coolant on underside of throttle body. I thought I had a bad head gasket due to the smell but upon closer inspection, most of the smell was coming from the engine compartment. It is leaking onto the drive side exhaust manifold.