My turn for an overheating problem! - JeepForum.com
 
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post #1 of 3 Old 05-10-2013, 06:40 PM Thread Starter
SCZJ
Registered User
1994 ZJ 
 
Join Date: Jan 2013
Location: Gainesville
Posts: 154
My turn for an overheating problem!

Cranked the jeep this morning let it warm up like always. Let it run maybe 5-6 mins. Got in and cool air was blowing out of the vents with the heat on. Also noticed it was getting a tad above 200 degrees, which is normal once I'm on the road, but not when it's only been running a few minutes!

After I got on the road hot air started coming out. As I got close to work I noticed the temp hand slowly moving over to 260. It would get to the red and then go back over toward 200. Did this a few times.

I'll let it sit all weekend and work on it Monday. Sound like a stuck thermostat?


'94 ZJ, 4.0, D30/D44A, 4 1/2" lift, 32" tires, 3.73 gears, etc... Just another cookie cutter ZJ.
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post #2 of 3 Old 05-10-2013, 07:22 PM
JasonStebbins
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1997 ZJ 
 
Join Date: Jan 2009
Posts: 3,138
Check the coolant level.

Examine the fan clutch.

Check the water pump for leakage.

Ever replace the radiator cap?

Replace the thermostat.

Poop
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post #3 of 3 Old 05-14-2013, 03:42 PM Thread Starter
SCZJ
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1994 ZJ 
 
Join Date: Jan 2013
Location: Gainesville
Posts: 154
@JasonStebbins: Thanks for the advice. The coolant level was low due to the leak. The fan clutch seemed to be fine; no free spinning, plenty of resistance. It ended up being the water pump. The bearings were shot!

'94 ZJ, 4.0, D30/D44A, 4 1/2" lift, 32" tires, 3.73 gears, etc... Just another cookie cutter ZJ.
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