1991 Lexus ES 250 es250 over heating

195,000 MILES • 6 CYL • FWD • AUTOMATIC
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TULSAHAWK823
  • MEMBER
  • 4 POSTS
Head gasket, timing belt , water pump ad radiator cap recently replaced. Wh outsde temperaure rises above 80 or so degrees and afte 2 or so miles engine begins to overheat. This occurs sooner if outside temp. is higher or AC is ran. Normal gauge settng is exactly half way mark on gauge. AC runs until gauge needle moves above tat mark. AC cooling ends. gauge climbs to 75 pecent or third mark and stays. Aftr engine i turned off I can hear coolant steaming and boilling into coolant resevoir.
Jun 18, 2010 at 4:52 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the thermostat, radiator if its clogged, water pump circulating coolant if okay get it block and pressure tested-
Jun 18, 2010 at 8:42 PM
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