testing the temp gauge
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Senior Member
Joined: Sep 2002
Posts: 535
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From: Florida
testing the temp gauge
Is there a way to test the temperature gauge on the dash?
I am suspicious that mine is not working properly. I left my truck running, closed, and stationary with AC on in the Florida sun (outside temp was 70) for about 6 hours and it the gauge NEVER went above the middle. In fact, in the 8 months I have had the truck I cannot recall it EVER going about the dead center.
Is there a real way to test it?
I am suspicious that mine is not working properly. I left my truck running, closed, and stationary with AC on in the Florida sun (outside temp was 70) for about 6 hours and it the gauge NEVER went above the middle. In fact, in the 8 months I have had the truck I cannot recall it EVER going about the dead center.
Is there a real way to test it?
Technical Article Contributor
Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
pw1981,
My guess would be the fan & cooling system are working correctly then.
If you have a digital odometer you could try selecting the temp reading, and see where it is at when it runs. This is the cylinder #1 head temp, same as what you get from the ODBII port when using AutoTap. The operating temp is something like 202 to 215 or there abouts.
If you want to test it, take off your fan, and if you have a digital odometer, set it to the temp reading and watch it climb.
Becareful not to let it run too high, and cause damage of course.
I have noticed that mine when running in 30 degree weather, if I am moving more then stopped, the turn on temp of my fans is never reached. I have to sit a long time in 30 degree weather to get the fans to turn on.
Try the temp reading if you have the digital odometer, to see what the head temp is at ( reading in C ).
I am shocked at how well the truck cools itself to start with, and beyond the dead weight of the fan out on the front of the engine causing perf loss ( rather it is using HP to turn it ), it does seem to work very well in the cooling department.
Just an idea..maybe Ford really did have a better idea when it came to this
My guess would be the fan & cooling system are working correctly then.
If you have a digital odometer you could try selecting the temp reading, and see where it is at when it runs. This is the cylinder #1 head temp, same as what you get from the ODBII port when using AutoTap. The operating temp is something like 202 to 215 or there abouts.
If you want to test it, take off your fan, and if you have a digital odometer, set it to the temp reading and watch it climb.
Becareful not to let it run too high, and cause damage of course.
I have noticed that mine when running in 30 degree weather, if I am moving more then stopped, the turn on temp of my fans is never reached. I have to sit a long time in 30 degree weather to get the fans to turn on.
Try the temp reading if you have the digital odometer, to see what the head temp is at ( reading in C ).
I am shocked at how well the truck cools itself to start with, and beyond the dead weight of the fan out on the front of the engine causing perf loss ( rather it is using HP to turn it ), it does seem to work very well in the cooling department.
Just an idea..maybe Ford really did have a better idea when it came to this
Technical Article Contributor
Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
pw1981,
Here is the link to the HEC Dealer test mode operation.
http://www.mustangworld.com/ourpics/News/99hec.htm
Have fun...
Here is the link to the HEC Dealer test mode operation.
http://www.mustangworld.com/ourpics/News/99hec.htm
Have fun...
