Topic Sponsor

Coolant temp sensor bad??

Thread Tools
 
Search this Thread
 
Old 08-17-2016, 06:06 PM
  #1  
Member
Thread Starter
 
Devin.preston's Avatar
 
Join Date: Jul 2016
Location: Illinois
Posts: 56
Received 5 Likes on 4 Posts
Default Coolant temp sensor bad??

I'm probably just paranoid but ever since I got my 96 f150 a year ago I've noticed something. No matter how long I drive the truck, 20 minutes or 4 hours straight, the temp gauge only goes up to the the "N" on normal. This just seems a little low and doesn't make sense as to why it wouldn't go even a bit higher than what it does. I've checked the thermostat, replaced radiator cap, flushed radiator and reservoir and cleaned all lines. Truck doesn't overheat but it feels hotter after driving it for longer (obviously) do I don't know why the engine getting warmer doesn't raise the gauge. It's a 96 f150 2wd 4.9 inline 6. Thanks!
Old 08-22-2016, 07:39 AM
  #2  
Senior Member
 
Lazarus-F150's Avatar
 
Join Date: Dec 2012
Posts: 401
Received 33 Likes on 31 Posts

Default

That's not atypical at all. The factory gauges are "dummy" gauges and I wouldn't trust them for much other than letting you know that something catastrophic is/has happened. If you want accurate numbers then I would recommend installing aftermarket gauges. I'm in the process of doing it now and will post pics in a thread on the main "1987-1996 F150" forum with part numbers, etc.
The following users liked this post:
Devin.preston (10-09-2016)
Old 08-22-2016, 07:42 AM
  #3  
Senior Member
 
Lazarus-F150's Avatar
 
Join Date: Dec 2012
Posts: 401
Received 33 Likes on 31 Posts

Default

Also, your truck has two coolant sensors. The one in the thermostat housing at the front of the engine (the "temp sensor") sends temp data to the computer and the one under the intake manifold (the "temp sender") goes to the gauge in the dash. Not sure why Ford couldn't come up with more distinct names....at least they are descriptive, I guess
The following users liked this post:
Devin.preston (10-09-2016)
Old 10-07-2016, 05:08 PM
  #4  
Senior Member
 
seschenburg's Avatar
 
Join Date: Sep 2014
Posts: 275
Likes: 0
Received 43 Likes on 38 Posts

Default

It also seems dumb to have two sensors for, essentially, the same thing.
The following users liked this post:
Devin.preston (10-09-2016)
Old 10-07-2016, 09:15 PM
  #5  
Senior Member
iTrader: (1)
 
Chris_1's Avatar
 
Join Date: Mar 2014
Location: Ontario, Canada
Posts: 5,811
Received 708 Likes on 671 Posts

Default

One is a sensor, the other is a sender. The sensor tells the computer that the engine is or isn't at operating temperature. The sender runs the gauge on the dash. 2 totally unrelated systems.
The following users liked this post:
Devin.preston (10-09-2016)
Old 10-07-2016, 09:19 PM
  #6  
Member
 
lovemyboost's Avatar
 
Join Date: Sep 2016
Posts: 397
Received 43 Likes on 35 Posts
Default

Originally Posted by Lazarus-F150
That's not atypical at all. The factory gauges are "dummy" gauges and I wouldn't trust them for much other than letting you know that something catastrophic is/has happened. If you want accurate numbers then I would recommend installing aftermarket gauges. I'm in the process of doing it now and will post pics in a thread on the main "1987-1996 F150" forum with part numbers, etc.

X2
Old 10-08-2016, 11:15 AM
  #7  
Senior Member
 
seschenburg's Avatar
 
Join Date: Sep 2014
Posts: 275
Likes: 0
Received 43 Likes on 38 Posts

Default

Chris_1, yes, but still, they could've been combined into a single unit if the temp gauge was "real".
The following users liked this post:
Devin.preston (10-09-2016)



Quick Reply: Coolant temp sensor bad??



All times are GMT -4. The time now is 08:43 PM.