Possible Thermostat Problem - Ford Powerstroke Diesel Forum
User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 22 Old 12-27-2012, 08:30 PM Thread Starter
Compression Ignition Addict
 
Join Date: Mar 2011
Location: Charlotte, NC
Posts: 296
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Possible Thermostat Problem

I am thinking my truck has a stuck open thermostat. The needle barely comes off the Cold indication no matter how long it has been running. How can I tell if it is stuck open? Running it probably isn't an option since my oil cooler is leaking. I am about to change out the seals and gaskets and thought I would go ahead and change the thermostat since it is only like $20. Does that sounds like a good plan or would you just leave the thermostat? Does anyone have a certain brand thermostat that they recommend?

tucker0104 is offline  
post #2 of 22 Old 12-28-2012, 03:03 AM
Compression Ignition Addict
 
dazed01's Avatar
 
Join Date: Aug 2010
Location: central texas
Posts: 437
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I would just go ahead and put a thermostat in and change your hoses if they need changing at the same time. It's cheap and easy.

Gun control is like trying to reduce drunk driving by making it tougher for sober people to own cars.
dazed01 is offline  
post #3 of 22 Old 12-28-2012, 05:13 AM
Compression Ignition Addict
 
Join Date: Nov 2009
Posts: 345
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
If its stuck open you'll see that it's open when you pull the thermostat out to inspect it.

1995 F250 Single Cab.
D60 Swap and Super Duty springs.
315/75/16 Tires.
Custom Light Bar for night missions.
BrianH is offline  
post #4 of 22 Old 12-28-2012, 05:16 AM
Compression Ignition Addict
 
jesilvas's Avatar
 
Join Date: Feb 2009
Location: Nacogdoches, TX
Posts: 11,148
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks: 0
Thanked 27 Times in 25 Posts
Feedback Score: 0 reviews
Just replace it.
If you come out of the job, run it, and you're still not getting temp change, I'd suspect the ECT sensor then.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
jesilvas is offline  
post #5 of 22 Old 12-28-2012, 07:38 PM
Unpremium Member
 
gaspipe's Avatar
 
Join Date: Dec 2011
Location: Hootersville, TN
Posts: 700
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 3
Thanked 3 Times in 3 Posts
Feedback Score: 0 reviews
The OE thermostats have a suck factor to them after many miles. I've had three 7.3's and each of them had the OE thermostat fail at 200-275k miles. Replace it and and keep going forward. You want that diesel hot, not at the C mark.

~Bruce~
'95 F250 4x4 ECLB 295k - ZF5, Southbend, 4.10, van pedestal, EBPV & CCV delete, 1.0 ex housing, 3" DP, 4" exhaust, BFAF, 140v IDM, MagHytec diff cover, HD front springs, 16x8 alloys
'95 F-Superduty 4x2 CM 12' Flatbed 33k - E4OD, 5.13, Banks intercooler, van pedestal, EBPV & CCV delete, 1.0 ex housing, 3" DP, 4" exhaust, BFAF, PHP tunes, 6.0 fan, 140v IDM, TruCool, MagHytec diff/pan, Dieselsite external trans filter, Autometer gauges, 180w LED light bar
gaspipe is offline  
post #6 of 22 Old 12-28-2012, 10:13 PM Thread Starter
Compression Ignition Addict
 
Join Date: Mar 2011
Location: Charlotte, NC
Posts: 296
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Any brand of thermostat that you recommend in particular? Thanks for the help.

tucker0104 is offline  
post #7 of 22 Old 12-29-2012, 07:14 AM
Compression Ignition Addict
 
dazed01's Avatar
 
Join Date: Aug 2010
Location: central texas
Posts: 437
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Quote:
Originally Posted by gaspipe View Post
The OE thermostats have a suck factor to them after many miles. I've had three 7.3's and each of them had the OE thermostat fail at 200-275k miles. Replace it and and keep going forward. You want that diesel hot, not at the C mark.
200k miles is a long time. If the thermostats last that long they are designed pretty well. I've replace a Lot of thermostats on newer cars at 30-60k miles. Some stick shut causing the engine to overheat and warp the heads. Newer cars monitor the ect and will determine the thermostat is faulty before it even seems to be acting up.

Gun control is like trying to reduce drunk driving by making it tougher for sober people to own cars.
dazed01 is offline  
post #8 of 22 Old 12-29-2012, 10:29 AM Thread Starter
Compression Ignition Addict
 
Join Date: Mar 2011
Location: Charlotte, NC
Posts: 296
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What brand thermostat do you recommend?

tucker0104 is offline  
post #9 of 22 Old 12-29-2012, 10:37 AM
Compression Ignition Addict
 
dazed01's Avatar
 
Join Date: Aug 2010
Location: central texas
Posts: 437
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I think I put a stant in mine.

Gun control is like trying to reduce drunk driving by making it tougher for sober people to own cars.
dazed01 is offline  
post #10 of 22 Old 12-30-2012, 06:35 AM
Compression Ignition Addict
 
Join Date: Apr 2008
Location: Wellington Nevada
Posts: 8,703
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks: 1
Thanked 42 Times in 41 Posts
Feedback Score: 5 reviews
X2....a Stant or a stock Ford...no need for the aftermarket hotter ones at all.
CT Performance, Inc. is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome