A ticking type noise may be noted from the engine area due to an exhaust manifold that has cracked where the pipes are welded; cracked manifolds should be replaced.Google+
Car Problem Reports
Jeep Cherokee Exhaust Manifolds Can Crack Where Pipes Are Welded
Jeep Cherokee Problem
Average Mileage: 150,842 mi (90,000 mi - 195,000 mi)
Buy replacement manifold. parts about 150; labor 180; 350-400 dollars worth repair.
Visitor, 1999 Jeep Cherokee, 134,000 mi
Had the ticking noise for a couple of weeks before the pipe snapped. The exhaust sytem, as well as a majority of the undercarriage is pretty rusted. In the shop now for repair.
Visitor, 2001 Jeep Cherokee, 188,900 mi
Ticking sound from engine
Visitor, 1999 Jeep Cherokee
ticking noise from cracked manifold that I was told was not uncommon for this year. No intention of replacing because of cost, but may try to patch cracks.