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 Wrangler Exhaust Manifolds Can Crack Where Pipes Are Welded
Jeep Wrangler Problem
Exhaust & Emissions Affected: 4.0L 6 Cylinder
Average Mileage: 133,529 mi (68,000 mi - 203,000 mi)
I bought and replaced a few $300+ headers. The last one I bought was the OEM replacement with the integrated flex pipe. Cheapest and best so far!!!
Visitor, 1993 Jeep Wrangler, 194,000 mi
Replace with stainless steel exhaust manifold
Visitor, 2004 Jeep Wrangler, 89,000 mi
Ticking noise upon acceleration or going up hill.
Visitor, 1998 Jeep Wrangler, 84,000 mi
I have a ticking noise,exhaust manifold seems to have a crack in it ,have already replaced the catalic converter two years ago,I wonder if this is something that jeep would replace for free or am i just screwed,This seems like it shouldn`t happen to a vechical that is being pamperd.I had it from 1998 and drive it very little just now has 84,000 miles,Please help..
Visitor, 2007 Jeep Wrangler, 90,000 mi
New right side manifold. Now starting to leak again.
Visitor, 1993 Jeep Wrangler
still have the ticking
I've had gaskets, cracked manifold replaced, new bolt kit to be installed with new manifold, why do these crack?
Visitor, 1998 Jeep Wrangler, 200,000 mi
Visitor, 1998 Jeep Wrangler, 68,000 mi
BUY AFTERMARKET STAINLESS STEEL VERSION, OEM IS THE SAME AS THE OLD ONE!
I have been dealing with problem for a while, I thought it was low oil or a lifter issue, it wasnt until I was on a forum that I figured it out along with the symptoms. The knocking on start up, quieting down once heated, bad gas mileage, drivability no what it use to be, it seems like the muffler or exhaust was louder in some way. I beleive this also lead to my throttle sensor issues, which inturn on highway speeds, engine would actually mis. Having issues fixed soon will update.