Alright so here is the problem, whenever I start my 1994 XJ, it sounds like a bunch of rocks rolling around. The sounds goes away as I push down on the gas but comes back as soon as I let off. It also fades away as the Jeep gets hotter. Typically this is a bad converter, right?
If it is bad, can I take it off, until I get the new one? Will it sound/smell really bad? I understand it is illegal, and I don't live in CA so I don't have to pass emission tests.
I was thinking about getting a MAGNAFLOW Direct Fit converter. Any options/better options are greatly appreciated.
Yep, definitely the cat. The motor mounts were replaced with some beefy new ones about 50K miles ago. When I pull anything on the exhaust it is all solid. As for the transmission mounts, I don't know. But I do the when I tapped the cat a few times, it sounded like rocks. The Jeep has 'bout 220K on it, and the cat hasn't been changed that I know of.
I know it's bad form to suggest taking the cat out of the exhaust system and I'm not suggesting you do it, but it just reminds me of a conversation I had a couple days ago.
I was talking to my brother in law (sister's husband, big car guy), about needing to replace mine since it was getting the rocky type sound. He said, "Oh hell, I just take mine off and run a piece of pipe up in there and knock all the crap out and put it back on." Told this to my other brother in law (wife's brother this time, who is a factory line mechanic) and he said "Yeah, that's what all the guys at the shop do to theirs."
I had no idea it was so prevalent.
2007 WK Overland
5.7L Hemi QDII - 200k+ Hemi Club #88 | Black WK Club #151
A new CAT really isn't THAT expensive. I would take care of it, either way, sooner rather than later. When the broken up catalyst finally plugs the outlet the Jeep will run very poorly, if at all. Usually this will happen on a long camping trip with the family while towing a pop-up camper trailer down I-95.
'94 Cherokee Country Engine: 4.0 HO, Sealed canister filter, 3 core CSF steel radiator, CatCo cat, Dynomax Turbo Flow muffler. Electronics: Remote start/locks, Pioneer DEH-P7800MP w/XM, Polk Audio speakers, Garmin Nuvi 660 GPS, Cobra 148 GTL P&T w/Wilson 1000. Suspension: Old Man Emu 3" lift+OME AAL, JKS adjustable trackbar, QDs, LCAs UCAs, A.C.O.S., DPG Offroad adjustable bumpstop plate, Daystar poly bumpstops. Steering: Currie HD steering, C-ROK steering box reinforcement, OME stabilizer. Armor/Recovery: T&T Custom belly skid, Mopar gas tank skid, JKS LCA mini skids, Rock Lizard Super Skink Sliders, Mopar 2" receiver, ARB Bull Bar/Ramsey REP 8.5 winch. Drive train: D30 front axle w/Superior Chromo D30 axles & outter seals, D/S 4.56 R&P, ARB locker, Ruff Stuff cover. Ford 8.8 rear axle w/Superior Super 88 kit, Ford Motor Sports 4.56 R&P, ARB locker, SOLID cover, Russell stainless lines. Front and rear Tom Woods HD drive shafts, 242 x-fer case w/Tom Woods SYE. Tires/Wheels: 33x10.5x15 BFG Mud Terrains on Alcoas. Misc: Garvin Wilderness rack, Safari Snorkel, Redline Tuning hood lifts. Awaiting installation: Autometer A pillar gauge pod, oil, water, & tranny temp guages, PIAA driving lights, Goferit tie-rod flip bushing, '95 Brake booster and M/C, M.O.R.E. Motor mounts, TnT Custom 1.5" Shackle. Stroker Project: HO Block, '99 intake manifold, bored TB, 1" TB spacer, Dynomax Blackjack Header, Permacool electric fan.