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Which sensor will cause the car to die?

Tiny
JON_E_OH
  • MEMBER
  • 1994 VOLVO S70
  • 100,000 MILES
The fan keeps running and won't start unless I disconnect the battery which seems to reset the fan

the engine thinks it is hot and dies and won't start and the fan keeps running yet if I disconnect the battery, then reconnect the battery the fan doesnt come on and the car starts up
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Wednesday, March 7th, 2012 AT 4:57 PM

6 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Does the temp gauge read hot? Is it really overheating?

The cooling fan relay may be stuck. The coolant sensor may be reading wrong as well. You need a shop with a scanner that will read these results.

Roy
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Wednesday, March 7th, 2012 AT 5:13 PM
Tiny
JON_E_OH
  • MEMBER
  • 5 POSTS
The temperature reads fine the car isnt overheating and after I unhook the battery it seems to reset and the car will start up again but it does the same thing again
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Wednesday, March 7th, 2012 AT 5:19 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Brings it down to the coolant sensor. Get it checked out.

Roy
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Wednesday, March 7th, 2012 AT 5:22 PM
Tiny
JON_E_OH
  • MEMBER
  • 5 POSTS
THank you
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Wednesday, March 7th, 2012 AT 5:41 PM
Tiny
JON_E_OH
  • MEMBER
  • 5 POSTS
Where is the coolant sensor?
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Wednesday, March 7th, 2012 AT 5:42 PM
Tiny
ASEMASTER6371
  • MECHANIC
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By the thermostat housing

Roy
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Wednesday, March 7th, 2012 AT 6:16 PM

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