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Engine Temp Gauge/ Engine won't heat up
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danamul
Novice
Mar 30, 2013, 3:04 PM
Post #1 of 10
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Engine Temp Gauge/ Engine won't heat up
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1998 Ford Explorer XLT 110,000miles
Im trying to figure out why the engine wont heat up, the gauge does move up a little after driving for a few mins but it will never get above the cold white line. The Truck has a clutch fan that might not be working right, but it doesn't get any loud when driving. Any thoughts on/if anything is wrong or what I should check. I was thinking of replacing the Temp Sender but sense the gauge does move (from very cold to cold) I thought it might not be that. (I have checked the gauge and it is working)
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 30, 2013, 3:31 PM
Post #2 of 10
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Re: Engine Temp Gauge/ Engine won't heat up
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You can't be guessing. you have to use a laser thermometer to determine the actual temp at the thermostat and if it is too cold, replace the thermostat.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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danamul
Novice
Mar 30, 2013, 3:53 PM
Post #3 of 10
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Re: Engine Temp Gauge/ Engine won't heat up
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Do you think I should just change the thermostat it could be stuck open? Might be cheaper then taking it to someone.
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Hammer Time
Ultimate Carjunky
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Mar 30, 2013, 3:56 PM
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Re: Engine Temp Gauge/ Engine won't heat up
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If you're determined to throw parts at it blindly, go right ahead. It can get expensive though.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
Veteran
/ Moderator
Mar 30, 2013, 4:03 PM
Post #5 of 10
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Re: Engine Temp Gauge/ Engine won't heat up
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This would really suck to install a lot of parts & then find out that the problem is with the gauge itself.........
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danamul
Novice
Mar 30, 2013, 4:32 PM
Post #6 of 10
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Re: Engine Temp Gauge/ Engine won't heat up
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Thx Hammer, ill look into the laser thermometer, was thinking of trowing parts at it  . Ive grounded out the gauge and that seems to be working right.
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Sidom
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Mar 30, 2013, 5:30 PM
Post #7 of 10
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Re: Engine Temp Gauge/ Engine won't heat up
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Right....but if the temp sensor is skewed....the gauge won't show an accurate reading....
The easiest thing to do would be to hook up a scan tool and look at the datastream and see what the coolant temp is off the ECT sensor.....If the reading is normal, then you have a sensor/wiring problem with the gauge......If it shows too cold as well then it would be time to go down that road....
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danamul
Novice
Mar 30, 2013, 6:01 PM
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Re: Engine Temp Gauge/ Engine won't heat up
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Befor I posted here I bought a new sensor and I snapped the plastic top of it off when putting it in  I couldn't get the wrench in there and used a sock wrench, but ya that was my first thought The Sensor is messed up. So I thought id come here befor trying again. Think I got some good info I just dont have the Scan tool or laser thermometer. I would think it has to be the sensor or thermostat. Appreciate the help I was getting frustrated
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Hammer Time
Ultimate Carjunky
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Mar 30, 2013, 7:11 PM
Post #9 of 10
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Re: Engine Temp Gauge/ Engine won't heat up
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Do you have good heat from the heater?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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danamul
Novice
Mar 30, 2013, 9:15 PM
Post #10 of 10
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Thats a good question I do have a leak in the Heater Control Valve that only leaks when I turn on the heat, I get ok heat but not what it should be, and I didnt really use heat this winter to much because of the leak. That could be it?
I didnt think that would affect the engine if it wasn't leaking when not running heat but maybe it does, it needs to be replaced anyway so thats where ill start, I think.
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