Question about 2003 Mazda Protege
My 03 Protege has 2 fans, the driver's side cooling fan and the passenger side fan that runs intermittently that comes on when a/c or when heat is set to defrost setting stopped coming on, it usually comes on for short bursts every 30 seconds but stopped working 2 days ago. Is this a problem? Its wintertime and I think its only for a/c use really to keep the engine cool, but wanted to make sure this won't cause problems with the engine or overheating. Thanks for any advice into this.
It won't cause any overheating, that fan is only suppose to come on when the a/c is on. Since it's cold, it's not going to come on because the engine has at least 2 sensors that tell the temp and it can see it's not needed. Now, if you turn it on during the summer and it doesn't come on and your a/c doesn't work, you may have blown the relay or your a/c may be low/out.
Posted on Nov 28, 2013
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Posted on Jan 02, 2017
I just replaced the radiator and thermostat on my 03. The radiator was defective (corroded) on the lip where the cap seals. This allowed coolant to be spat out. The thermostat was also sticking closed after new radiator and this caused overheating. Replace both while in there for under $100 if doing it yourself.
Posted on Mar 11, 2010
after replacing all that its going to take the fan awhile to kick on but tis going to over heat fast with just water its got alot lower boweling point than coolant may be doing this faster than what the fan can kick on
Posted on Sep 18, 2010
cooling fan has a heat sensor that controls it and is located on the engine...correct place on that car i do not know but local auto parts store should be able to help you out as to location....hope this helps
Posted on Aug 17, 2012
I would want to know if the computer is grounding the fan relay to make it come on, or if the relay is faulty. On some models the computer turns the fan on to keep the radiator from overheating when the engine is stopped, but that should only happen with the engine at operating temp.
Posted on Sep 29, 2012
coolant temp sensor tells the computer how hot or cold the engine is so it can regulate the idle and fuel mixture, when it fails there usually is no cooling fan and you will have trouble starting the engine and keeping it running.
Posted on Oct 10, 2012
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