04 dodge ram v6 with cooling problem, replaced thermostat and water pump, no leaks but

  • Thread starter Thread starter ohm0527
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ohm0527

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still have problem? at freeway speeds temp gauge goes hot light comes on,turn on heat and gauge goes to 3/4 and stays what else could it be?
 
You may have a cracked engine block which leaks compression from your cylinder into the water jacket. You can diagnose this with a compression test on each cylinder. A leak will show up as reduced compression in one or more cylinders.
 
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