these heaters suck when it's really cold!
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
I agree with Dave. Stat problem. The thermostats sole job it bring the engine temp up to where its supposed to be and keep it there. You could have a radiator the size of a house and still keep the engine at the correct temp if the stat is working correctly. These trucks didn't have a heat issue off the factory floor shiny new so a clean radiator isn't your problem.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Actually I read through this all again, sounds like the ones that were fluctuating in post 12 were working like they should have been.
The new radiator keep the coolant in it cold enough that the thermostat had to constantly open and close.
The engine was not making enough heat to get the radiator temp up to where the thermostat could open and stay that way.
Where you said the temp gets to about 200, then the thermostat opens and it levels off between 120 and 150 sounds like the thermostat is not closing once it opens.
The new radiator keep the coolant in it cold enough that the thermostat had to constantly open and close.
The engine was not making enough heat to get the radiator temp up to where the thermostat could open and stay that way.
Where you said the temp gets to about 200, then the thermostat opens and it levels off between 120 and 150 sounds like the thermostat is not closing once it opens.
Thread Starter
|
Posting Guru
Joined: Nov 2007
Posts: 2,158
Likes: 0
From: West Texas
I have one and it's agreeing with the temp gauge. It's working fine right now though. The ambient temps are about 60 now. temp is holding around 190-200. I don't know. My sons truck has a new Ford thermostat in it too and it's doing the same crap. His is a 7.3 IDI with the same radiator. I give up till I have a reason to pull the engine next month. About to order a new front cover and oil cooler.
Thread
Thread Starter
Forum
Replies
Last Post
white Buffalo
1999 - 2003 7.3L Power Stroke Diesel
37
Jan 26, 2014 11:06 PM
FORDF250HDXLT
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
69
Nov 22, 2012 07:19 PM
