2005 Saturn VUE Logo
Posted on Feb 01, 2010
Answered

Check engine light is on and cooling fan runs entire time car is running on my '05 Saturn Vue Have already changed the coolant temp sensor (code that keeps coming up) could it really be the O2 sensor going?

  • Anonymous May 11, 2010

    Did you get an OBD2 code reading? What waa the Code?

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2 Answers

Terri Quinones

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  • Posted on Nov 05, 2021
Terri Quinones
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Fan running after key removed on Saturn vue 2003. Never heard that before on any car. Should I be worried?

  • Anonymous Nov 05, 2021

    Cooling fans or heater blower motor ? Both of which can keep running after the key is turned off . You haven't heard because you have no clue how automotive electrical thing's work .

  • Anonymous Nov 05, 2021

    Take it to a qualified repair shop an have it checked .

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  • Posted on Oct 29, 2010
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Curious to know if you got this solved. Guessing downstream o2 sensor. did your vue idle high? act like it was getting too much gas? Let me know please.

  • mrgbmommy Oct 29, 2010

    Actually after 3 weeks of different places and mechanics and umpteen different code readings.... and upteen times of me saying could it be my thermostat and being told no cause no code for that came up. I finally found someone that actually LOOKED at the car and discovered it was ...wait for it.....THE THERMOSTAT! It was melted open and so fan constantly ran thinking car was overheating. Woohoo! A simple and easy fix! Runs great now.

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What is the normal engine coolant temp for Saturn Vue 2009 2.4l
If car is running hot, it could be low on coolant (use correct type for your car Dex-Cool 50/50). are cooling fans running? Could be water pump, could be thermostat.
It will vary between 190 & 205 according to the driving environment.
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Apr 29, 2022 • Saturn Cars & Trucks
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1997 Chevy Lumina 3.1 engine. The cooling fans aren't coming on tell the car heats up to over 250 degrees.
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I might want to use non--contact infrared temp gun just to double-check temp gage.
Have you ever checked thermostat or coolant flow through the radiator. I understand it only heats at idle.
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Saturn cuts off when trying to use the a/c
It could be more than one problem.
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Dec 25, 2012 • 2003 Saturn VUE
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I have a 2003 Saturn Vue 2.2L. The cooling fan is not comomt on when the engine is hot.
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Sep 07, 2011 • 2003 Saturn VUE
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My check engine light also comes on with my 2005 saturn vue 4cyl. about the same time my engine fan comes on high speed and stays on for days then goes off and the engine light goes off. I changed the...
Engine fan work on high speed in 2 cases , when engine is overheated or when AC is running. If your engine temperature is ok than U have to check the AC system . in most cases the relay that command the fan is the problem.I do not now exactly what kind of fan is on your car but are models that have electronic variable speed fans and the electronic module is located inside the fan.Other models has a separate module that contains the relay and its easy to find the module box only pursuing the cables that leave from the fan
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Jan 22, 2018 • 2005 Saturn VUE
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Getting codes PO431, PO421, PO128
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Nov 10, 2010 • 2003 Saturn VUE
4helpful
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06 vue cooling fan wont shut off tried new relay swich and the 40a fuse is obviously good. what could it be, temp sending unit?
The power for the fan comes from 2 relays in the
junction block on the left fender. One is a high fan relay 40amp the other is the low fan relay 20amp.
If either one is stuck, it will power the fan. Also if the
engine coolant temp(ect)sensor is bad, it can send a
false signal to the engine control module(ecm) and powering the fan. With the engine cool, if the fans still
running. Unplug the ect sensor(on thermo. housing)
if the fan stops replace the sensor. If not pull the relays one at a time. And see which one stops the fan. If none of this works it may be an ecm problem.
Hope this helps.
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Mar 21, 2010 • 2005 Saturn VUE
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High Idle 2000 Saturn S series
Definately have a sensor problem...but that may not be all. You can blame the sensor issue on the idling problem. The overheating in park is likely one of 2 things, provided you have adequate coolant. #1 a sticking thermostat or a bad coolant temp sensor not activating your fan at idle. What you should do is have your diagnostic codes read in order to take care of the sensor issue. Most national parts chains such as Auto Zone or Advance will do this at no charge in hopes of selling you a sensor. Good Luck! I hope you find this to be very helpful.
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Feb 18, 2010 • 2001 Saturn S-Series
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My 1999 saturn sw2 over heats easily because my engine cooling fan won't turn on ever. I checked the fan motor to make sure it works, no problem there.
check the coolant temp sensor....very common problem
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Mar 15, 2009 • 1999 Saturn SW
0helpful
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Service engine soon light on 2003 Saturn Vue
Here is the definition of the code in GM manual:
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Read full answer
Feb 12, 2009 • 2003 Saturn VUE
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