Overheating is there more than one thermoswitch.

Tiny
PAULRAMOS
  • MEMBER
  • 2006 PONTIAC GRAND PRIX
  • 170,000 MILES
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?
Sunday, April 7th, 2013 AT 8:06 PM

10 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
What was the original issue?

Roy
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Sunday, April 7th, 2013 AT 8:07 PM
Tiny
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Did it overheat?

Roy
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Sunday, April 7th, 2013 AT 8:08 PM
Tiny
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Yes still overtemp
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Sunday, April 7th, 2013 AT 8:09 PM
Tiny
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Ok, you may have damaged a head gasket which would explain the fans not working

have a leak down test done to confirm

Roy
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Sunday, April 7th, 2013 AT 8:11 PM
Tiny
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Is there a sequincer or something between the thermosencor and comp?
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Sunday, April 7th, 2013 AT 8:23 PM
Tiny
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No, the only one is the coolant sensor which has no bearing on the overheating.

Roy
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Sunday, April 7th, 2013 AT 8:23 PM
Tiny
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What is a leak down test?
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Sunday, April 7th, 2013 AT 8:25 PM
Tiny
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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
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Sunday, April 7th, 2013 AT 8:27 PM
Tiny
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Is it dificult to replace head gaskets
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Sunday, April 7th, 2013 AT 8:29 PM
Tiny
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Major engine work. Not reccomended for a job at home

Roy
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Sunday, April 7th, 2013 AT 8:29 PM

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