Temp gauge pin below normal
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Temp gauge pin below normal
This past weekend I put about 160 miles on my 87 f.150 with the 5.8 L 351 W and it is the most highway miles I have put on since I bought the truck last summer from my neighbor for $300. I noticed the pin on the temp gauge spiked to between the N and O in the NORMAL range and every once in awhile it would drop down below the NORMAL range. Do you think my themostat is stuck? When I got home tonight I popped the hood and touched the upper radiator hose and it was hot. Any recommendations?
Posting Guru
Joined: Mar 2016
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From: Missoula
Originally Posted by Ford4you
This past weekend I put about 160 miles on my 87 f.150 with the 5.8 L 351 W and it is the most highway miles I have put on since I bought the truck last summer from my neighbor for $300. I noticed the pin on the temp gauge spiked to between the N and O in the NORMAL range and every once in awhile it would drop down below the NORMAL range. Do you think my themostat is stuck? When I got home tonight I popped the hood and touched the upper radiator hose and it was hot. Any recommendations?
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Freshman User
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I replaced my thermostat last night and it still does it. So it has to be running just fine just the gauge is alittle off. As long as it's not in the cold or in the hot I'm gonna drive it as is.
Mountain Pass
Joined: Mar 2015
Posts: 200
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From: Hillsboro, OR
Have you replaced the sensor?
Cargo Master
Joined: Mar 2007
Posts: 2,935
Likes: 34
From: Arcadia, Fla
2X on the gauge temp sensor.
My 89 does the same thing even after a cluster swap to a fresh looking cluster. Now I just have to crawl under the I6 engine manifolds to change the temp sender.......
My 89 does the same thing even after a cluster swap to a fresh looking cluster. Now I just have to crawl under the I6 engine manifolds to change the temp sender.......
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