Diesel Forum - TheDieselStop.com - Reply to Topic
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

Thread: Cooling system troubles Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Diesel Forum - TheDieselStop.com 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










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
02-22-2019 11:11 PM
Cwilbourn I replaced the water pump the fins on the new pump are a lot closer to the body of the pump than the one I replaced didn't get a exact measurment but visually I could see the difference everything is great now Murray was the brand
02-22-2019 07:37 AM
ArcticDriver
Quote:
Originally Posted by DonWarkentin View Post
Looking back, I think that he had a defective water pump that he replaced with a good one.
Not a problem you hear of often.

What was the brand?
02-21-2019 10:06 PM
DonWarkentin Looking back, I think that he had a defective water pump that he replaced with a good one.
02-21-2019 07:40 PM
jleedog "Ok I'll Orient the spring side towards the block it is a new tstat from Ford it looks to be identical "




Looking back at his previous posts I think he had the T-Stat in backwards!
02-20-2019 06:23 PM
ArcticDriver
Quote:
Originally Posted by Cwilbourn View Post
Forgot to update truck is running perfect and I have a backup heat gauge thanks for the help
What was your solution?

Thanks
02-20-2019 06:22 PM
Cwilbourn Forgot to update truck is running perfect and I have a backup heat gauge thanks for the help
02-12-2019 12:52 AM
NYB Having recently replaced a water pump on a 2000 7.3L, I found that filling the system as much as possible before installing the heater hose on top of the water pump, and before connecting the upper radiator hose to the radiator, provides ample means for air to escape while getting the entire water jacket in the block full of coolant, right up until the point when coolant starts bubbling out of the water pump heater hose stand pipe.

At that point, connect the heater hose, then connect the top radiator hose to the radiator, and proceed with continuing the fill. Then run the engine with the heater on to finish the bleed of the heater core and the top third of the radiator core. Doing the pre fill with the heater core hose on the water pump disconnected at first in order to fill up the lower half of the cooling system really accelerates the bleeding process and ensures no air is anywhere in the water jacket of the block.
02-11-2019 05:53 AM
clydesdale What is the outside temp when you take the test drive? I can drive 15 minutes to work, around town roads, and the coolant gauge will not move if it is 20 degrees outside.
02-11-2019 02:43 AM
ArcticDriver
Quote:
Originally Posted by jimmy View Post
You can drive a 7.3 easy to moderate in cooler temps and not have the thermostat open and feel upper hose get warm in 20 minutes.
Now you have me wanting to test this when I get back to my trucks before I disagree. 😉

What are the cooler temps I should drive in?
02-10-2019 12:54 PM
Cwilbourn I took the pump off just to investigate there did not seem to be any issues reinstalled it all new seals installed a auxiliary Gage in the extra port in the process of wiring the gauge have a neighbor going to bring is air lift over and vacuum the air out does the coolant sensor control anything other than the gauge on the dash?
02-09-2019 11:19 PM
jimmy You can drive a 7.3 easy to moderate in cooler temps and not have the thermostat open and feel upper hose get warm in 20 minutes. Does the heater get warm? Are the heater hoses on RH valve cover one hot and the other warm after 10 minutes of driving? Brand new water pump not pumping would only happen if the impeller fell off. You can leave it full of coolant and take belt off and turn water pump using the cooling fan. If it is pumping there will be a lot of resistance. The bent paddle (my words) impeller style that all 7.3 pumps I have ever installed had would be hard to get on that pump wrong and it not leak as it is part of the seal.
02-09-2019 10:53 PM
Cwilbourn There was alot of clearance between the impeller and body of the water pump the system would not pressure up installed new pump less than half the clearance the other had installing a second temp gauge to ensure I do not damage the engine plus I love back up gauges thank you for the help hopefully I can return the it in the future
02-09-2019 07:52 AM
ArcticDriver Here is a photo to show the difference between the correct long t-stat vs incorrect short (Ignore the part numbers since I don’t know their source).
02-08-2019 10:00 PM
Cwilbourn Ok I'll Orient the spring side towards the block it is a new tstat from Ford it looks to be identical but who knows all I can say is it only took me 40 minutes to remove the pump this time practice makes perfect thanks for the help all ideas were appreciated hopefully it will be going this weekend then on to other repairs momma said it's gotta last me
02-08-2019 09:14 PM
Cwilbourn There is noticeable space between the impeller a the body it was slightly rubbing the block
This thread has more than 15 replies. Click here to review the whole thread.

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

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