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Im lost.....

10K views 99 replies 14 participants last post by  USMC5811 
#1 ·
2003 2.0 auto 4x4 Tracker almost overheated on my daughter. Towed home.
Flushed entire system. The flushed individually (heater core, block, rad.)
Tested t-stat, seemed slow to open. Bought new, same thing.
New radiator, water pump, t-stat, no apparent external leaks.
While at idle in garage, temp goes to and remains at normal range and has interior heat. Drive car for a mile or so and engine begins to overheat and I lose interior heat. Pull into garage and sure enough, lower hose is cool upper hose is hot.
New battery last year with me alternator. Replaced timing chain and valves (lapped) about 2-3 years ago with new head gasket. At a loss.......No engine codes.
Any ideas?
 
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