Well, I just got my Waggy back after letting my brother-in-law (ex brother-in-law now) use it for a few months (will NEVER do that again). I'm now having a problem with it. After idleing for a few minutes, the overflow starts boiling over. The temp gauge isnt reading hot though. What could this be? Thermostat? Backed up radiator? I'm planning on flushing the system tomorrow. Any other ideas?
Could be a number of things. could be the thermostat, go ahead and change it when you do the flush. but you need to make sure all the air is out of the system, and that there are no leaks. the closed system needs to be pressurized.
'95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb
Sold '00 TJ, 4" lift, rusty's adjustable control arms, skyjacker shocks, rock krawler adj. trac-bar,rugged ridge SYE and RE driveshaft, soft 8's, 35" mud king xt's,XJ HP D30 w/aussie locker, 4:88 yukon gears, hella 500's, rock crusher diff covers
4. 04 Dodge ram 1500 quadcab, yes, it has a hemi.
5. '08 BMW X3, Mods in progress.
If it does not read hot, most of the coolant is likey gone. If the cap on the resovoir bottle is bad, the coolant will boil (it is just like the cap for the radiator in an "open" cooling system--it is pressurized).
'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.
Well, I didn't get around to flushing the system today, but I did replace the bottle and cap. Didn't help.
Did you "burp" using the recommended approach? The closed systems are VERY sensitive to proper air removal procedures.
I don't own an XJ any longer, but I still think they are the best of all the Jeep products ever made. My XJ was my favorite vehicle in my 50+ years of driving.
So...I stick around and give advice.