Trans. Temp. Gauge Problem. HELP!!!
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Trans. Temp. Gauge Problem. HELP!!!
Hi, about a year ago I bought a 2002 F250 with a 5.4 engine and automatic transmission. With it having close to 65k miles on it. I took it to the local Ford dealer to have some PM done. One thing i had done was a transmission flush. Just the flush no filter change. This is where the problem started. When I picked up the truck I noticed right away the trans temp gauge was already at the half way mark and the coolant showed no reading. I thought this was odd because it had been about 6 hours since the called me to pickup the truck. So, I would think that would be enough time for the trans fluid to cool off since the engine coolant was. I went in and asked the service guy and he said it is just really hot outside. I am not buying it! I took it home and it sat over night and the gauge still shows a reading right away the next morning. I have never notice this happen even when it is really hot outside. I am not sure what to do since the dealer seems to be blowing me off. Any ideas? Are they right and am I nuts? Thanks for any help.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,698
Likes: 2,620
From: SE Florida
Yeah, they are right. The gauge is calibrated to read right in the middle of normal any time the transmission is warmer than 50°F. If it's warmer than that where you are the gauge is going to go to the middle as soon as the key is on.
I can't explain why you never noticed that before, but that is how it works.
I can't explain why you never noticed that before, but that is how it works.
Thread Starter
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New User
Joined: Jul 2010
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Yeah, they are right. The gauge is calibrated to read right in the middle of normal any time the transmission is warmer than 50°F. If it's warmer than that where you are the gauge is going to go to the middle as soon as the key is on.
I can't explain why you never noticed that before, but that is how it works.
I can't explain why you never noticed that before, but that is how it works.
Senior User
Joined: Dec 2008
Posts: 439
Likes: 4
From: Lubbock, Texas
Your oil pressure guage works the same way. If you have more then 7 psi of oil pressure it shows normal in the middle of your gauge. I installed a mechanical gauge with the stock gauge connected. The mechanical gauge would almost read zero before the stock gauge would change it's reading. Aftermarket gauges are a MUST.
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