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1994 Other Saturn Models Engine Fan does not turn on when A/

Tiny
VALIN54
  • MEMBER
  • 1994 SATURN
  • 4 CYL
  • FWD
  • MANUAL
  • 97,000 MILES
I have a Saturn SL2 model. The engine fan and the ECTS Coolant Temp Sensor are new. My fan relay works, but I have by-passed it and can remotely turn on my fan from inside the car. I can manually turn on the fan and have to when the A/C is on and I am stopped and idling. I need to know how to troubleshoot the problem of the fan not coming on when the A/C is turned on please.
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Friday, April 25th, 2008 AT 7:05 PM

1 Reply

Tiny
AUTOFRANK
  • MEMBER
  • 7 POSTS
Usually if the coolant sensor is unplugged, the fan will engage. There are two sensors, one for the ecu and one for the guage or dash warning lamp. With a scanner the realy can be cycled for troubleshooting purposes, without it can be a little more difficult. Firstly, when engine is hot does fan engage?Remember the fan wont come on til engine reaches approx 220 farenheit. The fan doesent usually run continous when the a/c is on. Just when pressure is up.
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Saturday, April 26th, 2008 AT 9:08 AM

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