Radiator cooling fan not working?

Tiny
FIX MY PROB
  • MEMBER
  • 2003 MAZDA PROTEGE
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
Radiator cooling fan not working at all air con fan running as normal trying to locate temp sensor and temp switch but can not find any photos on the net of this engine to fix the problem fuses are ok can you help and could the temp sensor or switch be the problem
Saturday, July 25th, 2015 AT 6:12 PM

8 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
This circuit doesn't have a temp switch/sensor dedicated to the cooling fan. The PCM controls the fan relay using readings from the engine temp sensor which is also used for fuel mixture decisions and monitored for any malfunction. I doubt that is your issue. The circuit needs to be tested using the wiring diagram to see if the relay is receiving all the inputs that it should be.

The first thing I would check is the fan motor itself to make sure it actually works.
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Sunday, July 26th, 2015 AT 4:37 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Forgot to post the diagram

https://www.2carpros.com/images/external/103114408.jpg.gif
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Sunday, July 26th, 2015 AT 4:38 AM
Tiny
DUSTER831
  • MEMBER
  • 2 POSTS
  • 1996 MAZDA PROTEGE
  • RWD
  • AUTOMATIC
  • 185,000 MILES
I just installed a new radiator and now that I put the fans back on. They dont work. Im afraid my car is going to over heat. I also took out the condenser and will probably not have one for a while. The engine light is not on. Could it be the thermostat?
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Wednesday, December 16th, 2020 AT 8:23 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
What was the temp gauge reading? How long did you run the engine? Were the top and bottom radiator hoses hot and did the heater start working with hot air?
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Wednesday, December 16th, 2020 AT 8:23 AM (Merged)
Tiny
DUSTER831
  • MEMBER
  • 2 POSTS
The temp stays in the middle.
Ive driven it ten miles out and back before with no problems but the fans didnt work or start at all.
Yes they hoses were hot and the heater with hot air
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Wednesday, December 16th, 2020 AT 8:23 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
What engine 1.5 1.8 please advise so I can look at the schematic
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Wednesday, December 16th, 2020 AT 8:23 AM (Merged)
Tiny
MELINDA7815
  • MEMBER
  • 1 POST
  • 1995 MAZDA PROTEGE
  • 4 CYL
  • FWD
  • AUTOMATIC
What could be the problem with my 1995 mazda protege cooling fans not coming on
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Wednesday, December 16th, 2020 AT 8:23 AM (Merged)
Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
First check the relay. If they're good, check the wires/connectors at the fan for breaks/looseness/corrosion. If they're good/ apply direct battery voltage to the fans to see if they come on. If they don't, replace them. If they do, your engine coolant temp sensor may be faulty. Test it last.
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Wednesday, December 16th, 2020 AT 8:23 AM (Merged)

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