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Opel Corsa 1.6 cooling fan low and engine overheating

Tiny
MANYAMA
  • MEMBER
  • 2004 OPEL CORSA
  • 96,000 MILES
At first fan nut came off and engine overheated. I replaced fan nut but fan now turning at low speed, so engine overheats. But when I cruise on the open road it does not overheat. If anything the temp gauge drops to zero. I wonder if thermostat is stuck open and my sensor faulty. I cant locate the thermostat and sensor.
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Sunday, January 1st, 2012 AT 4:42 AM

3 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Thermostat is usually located at the engine end of the upper radiator hose.

Fan nut? The fan came apart? Or loose from the radiator? Try hot wiring the fan to see if it turns at full speed. If not, replace the fan. It needs to be at least a 12 gauge wire.
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Sunday, January 1st, 2012 AT 4:50 AM
Tiny
MANYAMA
  • MEMBER
  • 2 POSTS
When I hot wire fan it runs at full speed. Lokks like my temperature sensor is faulty. Where is the sensor located on the opel corsa 1.6 classic.
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Sunday, January 1st, 2012 AT 6:22 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
It could be either the temperature sensor or the fan relay. The temperature sensor is located on the side of the engine. The fan relay should be in a box near the battery.
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Sunday, January 1st, 2012 AT 8:52 AM

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