Engine was overheating. Replaced the thermo, water pump, and radiator cap. Flushed and refilled radiator. Engine is still overheating (temp gauge reads to the right of "210" or dead center). Also noticed no heat blowing inside from heater. Any ideas? Clogged heater coil? Does the 4.0L engine in a '98 require the "reverse rotation" water pump? Didn't notice the old pump as reverse rotation, but when I look at it and consider which direction the pulley is turning it sure looks like the pump blades are in the wrong direction!
'98 TJ Overheating Problem
Aug 02, 2006
3 Replies
Open the radiator cap and check for flow. I believe your application should be reverse rotation. On the old one there should be a raised R on the pump case.
Checked the fan clutch? My gf's is giving out slowly on hers, gotta change it soon.
Troy
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