Ticking Type Noise Due to Cracked Exhaust Manifold on Jeep Wrangler

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.

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Average mileage: 129,750 (68,000–203,000)
Exhaust & Emissions affected: 4.0L 6 Cylinder
18 model years affected: 1991, 1992, 1993, 1994, more1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
44 people reported this problem
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Viewing 1 - 16 of 16 problem details
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..
2004 Jeep Wrangler 89,000 mi,
Ticking noise upon acceleration or going up hill.
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!!!
1993 Jeep Wrangler 194,000 mi,
Replace with stainless steel exhaust manifold
1998 Jeep Wrangler 200,000 mi,
manifold leak
1998 Jeep Wrangler 68,000 mi,
BUY AFTERMARKET STAINLESS STEEL VERSION, OEM IS THE SAME AS THE OLD ONE!
2001 Jeep Wrangler 165,000 mi,
when I start my vehicle ( 2001) jeep wrangler sport it has a ticking noise but goes away eventually
2008 Jeep Wrangler 90,000 mi,
Stock manifolds on both sides are cracked.. One from lower flange up through middle approx 4 inches long.. Passenger side has a 2 inch crack in same place
Tightened to max and welded !
2007 Jeep Wrangler 90,000 mi,
New right side manifold. Now starting to leak again.
I've had gaskets, cracked manifold replaced, new bolt kit to be installed with new manifold, why do these crack?
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.
1999 Jeep Wrangler 137,000 mi,
ss headers
1995 Jeep Wrangler 140,000 mi,
replace it