1990 XJ Overheating Problem. - JeepForum.com

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post #1 of 24 Old 10-10-2010, 11:40 AM Thread Starter
D0dgeRam1500
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1990 XJ Overheating Problem.

I was driving my Jeep around town yesterday testing her out now that I have new tires on her and after about 25 minutes I noticed the engine temp gauge getting close to the red area. I headed home but when I got home the gauge was in the red and pinned. When I shut her off I heard the coolant overflowing. I don't know what else I need to check or replace but she has a new radiator, new hoses, new thermostat, new overflow, and she was flushed twice and she still overheats. Also before I replaced the parts her hood would get hot but now it doesn't anymore. Can anyone tell me what I overlooked?


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post #2 of 24 Old 10-10-2010, 11:42 AM
1990JEEPXJ
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still the closed system?

Completely stock, and keeping it that way...

My POS
Quote:
Originally Posted by Joe Dillard View Post
Yea, and I thought it was one of the 11 Commandments:
11) Thou shalt love, cherish, and honor till death, thine square headlights above all other earthy things sayith the Lord.
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post #3 of 24 Old 10-10-2010, 11:46 AM
mecompco
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Did you "burp" it properly?

'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.
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post #4 of 24 Old 10-10-2010, 11:50 AM Thread Starter
D0dgeRam1500
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Yes, she is still running a closed system and I brought her to two different shops to flush her out because I don't have the machine to flush her correctly.

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post #5 of 24 Old 10-10-2010, 11:53 AM
mecompco
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Quote:
Originally Posted by D0dgeRam1500 View Post
Yes, she is still running a closed system and I brought her to two different shops to flush her out because I don't have the machine to flush her correctly.
Are you sure "they" got all the trapped air out of the system (aka "burping" it)? If not, that will cause overheating.

'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.
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post #6 of 24 Old 10-10-2010, 12:41 PM
1990JEEPXJ
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to burp it jack up the rear of the jeep and remove the temp sender in the back of the head on the drivers side. remove the coolant pressure bottle cap and top it off. start the jeep and when coolant comes out of the back of the head, put the temp sender back in the head and close everything up. another way is to repeatedly squeeze the upper rad hose while the jeep is warming up. you should hear gurgling coming from the pressure bottle

Completely stock, and keeping it that way...

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Quote:
Originally Posted by Joe Dillard View Post
Yea, and I thought it was one of the 11 Commandments:
11) Thou shalt love, cherish, and honor till death, thine square headlights above all other earthy things sayith the Lord.
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post #7 of 24 Old 10-10-2010, 04:51 PM Thread Starter
D0dgeRam1500
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I'm going to burp it on Tuesday after school. I'll tell you guys how it goes. Unfortunately I can't get to it tomorrow.

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post #8 of 24 Old 10-10-2010, 04:56 PM
cruiser54
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Do yourself a favor while you're at it and replace the cap with a Stant 10244. It fits way better, holds a higher pressure, and doesn't contact the hood when the bottle expands. Most all other caps are crappo.
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post #9 of 24 Old 10-11-2010, 12:32 PM
1990JEEPXJ
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my volvo cap still touches my hood when the bottle expends...

Completely stock, and keeping it that way...

My POS
Quote:
Originally Posted by Joe Dillard View Post
Yea, and I thought it was one of the 11 Commandments:
11) Thou shalt love, cherish, and honor till death, thine square headlights above all other earthy things sayith the Lord.
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post #10 of 24 Old 10-11-2010, 04:32 PM
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Quote:
Originally Posted by 1990JEEPXJ View Post
my volvo cap still touches my hood when the bottle expends...
Well it shouldn't. How much is that bottle expanding?
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post #11 of 24 Old 10-11-2010, 08:48 PM
1990JEEPXJ
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not sure, but it does expand, obviously. just enough to kiss the hood. im sure its the bottle. its just a POS autozone replacement. but my jeep doesnt run hot with the exception of long climbs in 3rd.

Completely stock, and keeping it that way...

My POS
Quote:
Originally Posted by Joe Dillard View Post
Yea, and I thought it was one of the 11 Commandments:
11) Thou shalt love, cherish, and honor till death, thine square headlights above all other earthy things sayith the Lord.
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post #12 of 24 Old 10-23-2010, 10:14 PM Thread Starter
D0dgeRam1500
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I finally got around to burping it and it did have a lot of air in the system. It runs a lot longer before overheating but it still overheats. I can take it on the highway and the air cools it enough to get it back to 210. Is there anything else that could cause this?

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post #13 of 24 Old 10-24-2010, 02:10 AM
EverydayXJ00
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Is your auxiliary fan working? If your noticing more of an issue when your in stop and go situations and less on the hwy that could be the problem.
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post #14 of 24 Old 10-24-2010, 08:04 AM
cruiser54
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Quote:
Originally Posted by D0dgeRam1500 View Post
I finally got around to burping it and it did have a lot of air in the system. It runs a lot longer before overheating but it still overheats. I can take it on the highway and the air cools it enough to get it back to 210. Is there anything else that could cause this?
Uh, a bad cap? Stant 10244. Al lthe other replacements, exept maybe from the dealer, are chinese junk.
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post #15 of 24 Old 10-24-2010, 08:38 AM Thread Starter
D0dgeRam1500
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Quote:
Originally Posted by cruiser54 View Post
Uh, a bad cap? Stant 10244. Al lthe other replacements, exept maybe from the dealer, are chinese junk.
Could air be getting in due to a bad cap?

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