Question about 2006 Saturn ION
There should be two sensors - one for the computer and one for the gauge. Are you working on the right one ? Can you ground the sensor plug and make the gauge move ?
Is the engine warming up ?
Posted on Jul 24, 2012
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Posted on Jan 02, 2017
SOURCE: temp gauge
Coolant temp sensor should be on the drivers' side of the motor on the lower portion of the aluminum head. I think the wires are black and yellow if my memory serves me well.
Posted on Apr 25, 2009
SOURCE: Oxy Sensor
Makes 100% sense to me
I have a 1999 SL1 that I'm having a field day with. I installed a OEM cruise control on the car, took it to the dealer and had them program the PCM to see the cruise.
Cruise works flawlessly, but now I have a Service Engine Soon and Service Lights on all the time (Crank position sensor error and 1 cylinder missfire error) that the dealer cannot get to reset (Car runs perfectly) Dealer has worked on it 4 days so far (at their cost, not mine) they seem to be stumped. I love it!
Posted on Aug 06, 2008
Rather than take any chances the temp gage cost $10.00 at the parts store, and is relitively easy to replace. If you have not changed the fluid lately, I would do this as well. I just recently did this in my garage with a 10mm box wrench and ratchet using a flashlight to help see. The 6mm bolts may be a little tough to get at,but it is doable. I replaced the thermostate and fluid for around $20.00. Also, if it is a DOHC look on the drivers side on the head, you should see a temp sensor, if you replace that as well, you will have taken care of all the possible heat related parts on the vehicle. MAke sure to partially drain the system if you want to check the sensor, as fluid will run out if you dont. I also think that there is a resistance reading which you can check to see if the sensor is good, butunfortanuately I do not recall what the ohm reisitance is that can be read with an Ohm meter if you have one. Check out u-tube for additional information as well, they may have a hands on video to follow and explain. Good luck, I have 220000 mi on my car, running strong
Posted on May 27, 2009
If you have A/C, you can check the system from the PCM output through the relay and to the fan motor by turning on the A/C and blower (with the engine on, of course): the cooling fan motor should turn on and stay on for several minutes.
Also, as you may know, this vehicle has a one-wire temperature sender that controls the dashboard gauge, but nothing else. (This one connects to a dk.green/yellow banded wire -- or maybe green/white banded.)
The other, two-wire temperature sensor is the one that connects to the PCM. This one has one yellow and one black wire. I assume that this is the one that you replaced.
And, in principle, there's the PCM itself that could be giving an inaccurate temperature... but that's expensive, so let's not go there...
Posted on Oct 11, 2009
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