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2006 Pontiac Grand Prix Overheating There More Than One Thermoswitch Replaced

2006 PONTIAC GRAND PRIX
170,000 MILES
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PAULRAMOS
  • MEMBER
  • 5 POSTS
overheating is there more than one thermoswitch?/ i have replaced thermosencor water pump thermostat 3 fan relays and flushed the system....now i have n oticed the two fans come on but they are only on low i havnt seen them onn high ...only once suspect there may be a seqincer or something i may have missed somewere???
Apr 7, 2013 at 1:06 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
what was the original issue??

Roy
Apr 7, 2013 at 1:07 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
did it overheat??

Roy
Apr 7, 2013 at 1:08 PM
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PAULRAMOS
  • MEMBER
  • 5 POSTS
yes still overtemp
Apr 7, 2013 at 1:09 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
ok, you may have damaged a head gasket which would explain the fans not working

have a leak down test done to confirm

Roy
Apr 7, 2013 at 1:11 PM
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PAULRAMOS
  • MEMBER
  • 5 POSTS
is there a sequincer or something between the thermosencor and comp??
Apr 7, 2013 at 1:23 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
no, the only one is the coolant sensor which has no bearing on the overheating.

Roy
Apr 7, 2013 at 1:23 PM
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PAULRAMOS
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what is a leak down test??
Apr 7, 2013 at 1:25 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
air is inserted into the cylinder and the pressure is monitored to see if it drops and look for moving the coolant in the radiator.

Roy
Apr 7, 2013 at 1:27 PM
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PAULRAMOS
  • MEMBER
  • 5 POSTS
is it dificult to replace head gaskets
Apr 7, 2013 at 1:29 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
major engine work. not reccomended for a job at home

Roy
Apr 7, 2013 at 1:29 PM
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