2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I need to change my engine coolant temperature sensor because my check engine light is on and is throwing code P0117-ENGINE COOLANT TEMPERATURE SENSOR LOW, however I cannot seem to find it. Has anyone changed one before and knows where it is located, i'm pretty sure it's somewhere near the alternator?
Dodge ram 1500, 5.9.
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Last edited by BigDubDiesel; 03-25-2009 at 02:36 PM..
Its behind the alternator on the intake manifold down next to where the thermostat housing is (if looking at your engine from the front). But, depending on the year of your truck, you may have one or two.
-On some '98, some '97, and all '96 and older, there should two (one is a sensor, one is a sending unit). One is for the PCM (the ECT sensor) and the other one is for the temp gauge and warning light (a sending unit). The one to the left of the thermostat housing is for the sending unit, and the port just behind and to the right of the t-stat housing is for the ECT.
-On some '97, some '98 and all '99 and newer trucks, there is just one that does both jobs (sensor and sender) and it should be to the left of the t-stat housing.
2009 Ram 1500, 4x4, Hemi
1999 Ram R.I.P. - April 2008 Truck of the Month / January 2012 Ride of the Month / Dodge Forum 2012 Truck of the Year
The sensor the auto store gave me is two prong...... Do I just unscrew the sensor and slip new one in? There is enough under there I do not want to get the wrong advice and start unplugging anything I shouldn't.... Thanks for the help.
I'm pretty sure that's what's recommended in the Haynes manual I have-- Teflon tape. I can't think of a reason why it would hurt. For all intents and purposes the sensor is just a solid chunk of brass.
1999 Ram 360 auto 4x4
And Torque monster V2K Limited:
i have a 97 w/ a5.9 . it has both sensors but cant find the location of the ect sensor. nothing to the right of the t- stat housing. just a 2 wire with a sensor in it and no place for it to screw into. any advise or pictures would be helpful.
On mine, the sensor for the gauge (1 wire) is on the passenger side of the thermostat housing, and the sensor for the PCM, (2 wire) is on the drivers side. I wonder if your manifold got changed out at some point?