# 2008 Ford F350 - Temp drops

**URL:** <https://community.cartalk.com/t/2008-ford-f350-temp-drops/128555>\
**Category:** Maintenance/Repairs\
**Tags:** ford\
**Created:** [November 10, 2018, 2:34pm UTC](https://community.cartalk.com/t/2008-ford-f350-temp-drops/128555 "2018-11-10T14:34:24Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Richard22](https://avatars.discourse-cdn.com/v4/letter/r/b9e5f3/32.png) [@Richard22](https://community.cartalk.com/u/Richard22)\
**Post date:** [November 10, 2018, 2:34pm UTC](https://community.cartalk.com/t/2008-ford-f350-temp-drops/128555/1 "2018-11-10T14:34:24Z")

</div>

'08 F350 2WD gas.  
Transmission fluid temperature gauge keeps dropping to nothing.  
Then tranny shifts hard and engine runs at higher rpm.  
I know temp is ok because before gauge drops out the temp is in proper range.  
So is it something in the wiring, gauge, fuse blocks, or sensor ?

---

<div class="post-metadata">

**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [November 10, 2018, 3:20pm UTC](https://community.cartalk.com/t/2008-ford-f350-temp-drops/128555/2 "2018-11-10T15:20:24Z")

</div>

> [@Richard22](#):
>
> So is it something in the wiring, gauge, fuse blocks, or sensor ?

Yes

From your description, I’d say the sensor is bad. A fuse won’t fix itself, nor will a bad wire, although a short to ground might but not so predictably. Since the truck’s ECU has decided the temp is wrong and goes into a 'save the trans" mode, it isn’t the gauge. So sensor is most likely.