Ford Truck Enthusiasts Forums

Notices
6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Transmission temperature sensor

Thread Tools
 
Search this Thread
 
Old Aug 4, 2016 | 06:31 PM
Share
  #1  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
Transmission temperature sensor
Ok a while back, my temp gauge for the transmission pegged and I got a warning to check my transmission Temps. I replaced the sensor, put all new fluid and filters (all Motorcraft). Problem solved, or so I thought. A month or so later, it started up again. Flashing tow/haul light, erratic shifting, refusing to go into overdrive periodically. So I repeated the service thinking maybe I got a bum sensor. Problem solved, or so I thought. I made it about 3 miles before the same symptoms started back up.

Anyone have a clue as to what could be causing this?
 
Reply
0
Old Aug 4, 2016 | 07:07 PM
Share
  #2  
BLADE35's Avatar
BLADE35
Hotshot
15 Year Member
Liked
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
is the sensor Pegging and Erratic again


What digital number does it show
 
Reply
0
Old Aug 4, 2016 | 07:29 PM
Share
  #3  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
Yes it's acting like it reads for a second then stops back down. I don't have a scanner
 
Reply
0
Old Aug 4, 2016 | 07:38 PM
Share
  #4  
mattdoc88's Avatar
mattdoc88
Laughing Gas
10 Year Member
Photogenic
Photoriffic
Joined: Oct 2013
Posts: 817
Likes: 6
Before you buy more parts that may not fix the problem, getting a scanner would probably be the best thing to spend money on.
 
Reply
0
Old Aug 4, 2016 | 07:57 PM
Share
  #5  
Mark Kovalsky's Avatar
Mark Kovalsky
Frmr Ford Trans Engr
25 Year Member
Liked
Community Favorite
Top Answer: 3
Joined: Aug 1999
Posts: 24,695
Likes: 2,616
From: SE Florida
That problem can be caused by a bad sensor OR a problem in the wiring between the PCM and the sensor.
 
Reply
0
Old Aug 4, 2016 | 07:58 PM
Share
  #6  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
What scanner do you recommend? I'm really looking to fix this over the weekend so hopefully it's something I can get locally
 
Reply
0
Old Aug 4, 2016 | 07:59 PM
Share
  #7  
BLADE35's Avatar
BLADE35
Hotshot
15 Year Member
Liked
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
was it OEM part


what fluid did you run
 
Reply
0

Trending Topics

Old Aug 4, 2016 | 07:59 PM
Share
  #8  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
Originally Posted by Mark Kovalsky
That problem can be caused by a bad sensor OR a problem in the wiring between the PCM and the sensor.
Thanks I'll take a look at wiring when I get home and see if I notice anything
 
Reply
0
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-3

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old Aug 4, 2016 | 08:00 PM
Share
  #9  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
Originally Posted by BLADE35
was it OEM part


what fluid did you run
It was a Motorcraft part, and I use Motorcraft Mercon sp
 
Reply
0
Old Aug 4, 2016 | 09:06 PM
Share
  #10  
87crewdually's Avatar
87crewdually
Lead Driver
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
Like Mark said above, you better have a good look at the harness. Alot of times the sensor is fine but the harness was bad.
 
Reply
0
Old Aug 4, 2016 | 10:09 PM
Share
  #11  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
Originally Posted by 87crewdually
Like Mark said above, you better have a good look at the harness. Alot of times the sensor is fine but the harness was bad.
Are you referring to the external harness, or the 2 wires inside the transmission?
 
Reply
0
Old Aug 4, 2016 | 10:33 PM
Share
  #12  
BLADE35's Avatar
BLADE35
Hotshot
15 Year Member
Liked
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
Both are in question


the sensor is also in question
 
Reply
0
Old Aug 4, 2016 | 11:31 PM
Share
  #13  
87crewdually's Avatar
87crewdually
Lead Driver
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
Originally Posted by usmarine1979
Are you referring to the external harness, or the 2 wires inside the transmission?
Internal. Especially if it is showing pegged hot.
 
Reply
0
Old Aug 4, 2016 | 11:54 PM
Share
  #14  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
Originally Posted by 87crewdually
Internal. Especially if it is showing pegged hot.
Is bottoming out like it sees nothing.
 
Reply
0
Old Aug 4, 2016 | 11:55 PM
Share
  #15  
usmarine1979's Avatar
usmarine1979
Thread Starter
|
Junior User
Joined: May 2016
Posts: 79
Likes: 0
Originally Posted by BLADE35
Both are in question


the sensor is also in question
I'm going to wager I didn't get 2 bad sensors in a row. Buthe it does sound a bit like my luck.
 
Reply
0



Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 03:21 AM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE