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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #1  
Old 06-02-2007, 07:22 PM
ShannonM2 ShannonM2 is offline
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1993 Coolant Temp Sensor

I have a 1993 F-150 Ext. Cab, 4wd, 351W.

The temp guage shows very cool. It never makes it to the N in "Normal". I had replace the T-Stat, and a temp sensor, but didn't make any difference. The sensor I had replaced is in the center of the intake, on the drivers side of the intake runners. Are there any other temp sensors? And also, when I had taken that sensor out, there was no coolant visible, it was an air space, and there was some "blackish gunk" on the tip of the sensor? Any clues or suggestions?

Thanks
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  #2  
Old 06-02-2007, 07:31 PM
351slug 351slug is offline
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Have you ran some stop leak in it before? Sounds like your your not getting water flow to sender.
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Old 06-03-2007, 03:48 AM
92F150Flare 92F150Flare is offline
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I think you changed your ACT sensor.......see if this helps

http://i54.photobucket.com/albums/g9...ACTSensor4.gif

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Old 06-03-2007, 07:09 AM
ShannonM2 ShannonM2 is offline
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Does anyone know if there is a seperate sensor for the gauge only? I did accidently change the act sensor, but had corrected it. The gauge still reads just at the first line before the N in normal, barely make it into the normal operating range.
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Old 06-03-2007, 08:10 AM
alstieg alstieg is offline
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there is a separate sensor for the guage only. it will have only one wire to push on it. the other ECT will be a 2 wire.
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  #6  
Old 06-03-2007, 08:29 AM
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Sounds like you got the right one.
Here is a photo of a 5.0 but yours should be in the same places.

Click the image to open in full size.
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Last edited by subford; 06-03-2007 at 08:40 AM.
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Old 06-03-2007, 08:36 AM
ShannonM2 ShannonM2 is offline
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Where would the other sensor be located?
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  #8  
Old 06-03-2007, 08:42 AM
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Quote:
Originally Posted by ShannonM2
Where would the other sensor be located?
Look at the photo above, the one you want is the "TEMP SENDER".
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  #9  
Old 06-03-2007, 08:44 AM
ShannonM2 ShannonM2 is offline
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my engine is a different design than your picture. I'll get a photo posted in a few mins
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Old 06-03-2007, 09:02 AM
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Quote:
Originally Posted by ShannonM2
my engine is a different design than your picture. I'll get a photo posted in a few mins
Here is a link to a diagram of a 1993 5.8 showing the TEMP SENDER for the gauge.
http://i54.photobucket.com/albums/g91/subford/Electrical/EEC%20PCM/TempSender5.gif

EDIT

It is number 49 in this link:
http://i54.photobucket.com/albums/g9...empSender5.gif
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Last edited by subford; 06-03-2007 at 09:23 AM.
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  #11  
Old 06-03-2007, 09:24 AM
ShannonM2 ShannonM2 is offline
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Here is a link to a picture of my enging with the ECT and ACT sensors noted.


http://64.40.115.138/file/lu/20/196549/MTk2NTQ5fSt7Mjk0MzE1.jpg?download=1

Last edited by ShannonM2; 06-03-2007 at 09:27 AM.
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  #12  
Old 06-03-2007, 09:30 AM
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Quote:
Originally Posted by ShannonM2
Here is a link to a picture of my enging with the ECT and ACT sensors noted.
EDITED
That is the same as the photo posted above.
The one you noted as the ACT is the ACT sensor.
The one you noted as ECT is the ECT sensor for the Computer, nothing to do with the gauge.

The TEMP sender is at the "o" in sensor of "ACT Sensor".
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Last edited by subford; 06-03-2007 at 09:33 AM.
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  #13  
Old 06-03-2007, 09:43 AM
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A link to your photo edited for the Temp Sender.
http://i54.photobucket.com/albums/g9...d/Engine/5.jpg
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  #14  
Old 06-03-2007, 09:53 AM
ShannonM2 ShannonM2 is offline
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I found it. Thank you. The problem is taht the post of the sensor was corroded, causing a bad connection. I had cleaned it, and the gauge started reading more normal. If it seems to hang low, I'll just replace it. It was quite bad for the corrosion.


Thanks, everyone!
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Old 06-03-2007, 09:53 AM
 
 
 
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1993, 351w, 50, 93, act, coolant, ect, engine, f150, ford, picture, reading, replacing, sensor, temp, temperature, van

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