Truck Running Cold?
Thread Starter
|
Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Truck Running Cold?
How far up the temp gauge does your needle go when warmed up? Since I bought this truck, I've never seen the needle move up more than 1/3 between the first line after the "C" and the first line before the "H". This is during normal driving. I bought the rig used from the original owner and don't know if he has a different thermostat in there or what. Is it running cold? I hear that hissing from the exhaust deal quite a bit around 1500 RPMs under light throttle. Is my truck warming up all the way?
What thermostat should be in these 7.3L PSDs? I'm thinking about having a coolant flush done and putting in a new thermostat if needed. IIRC, I saw a thread about a slightly hotter thermostat than Ford puts in?
What thermostat should be in these 7.3L PSDs? I'm thinking about having a coolant flush done and putting in a new thermostat if needed. IIRC, I saw a thread about a slightly hotter thermostat than Ford puts in?
Go Bills !
Joined: Jan 2008
Posts: 2,778
Likes: 65
From: Buffalo, NY
Temperature, I think sounds about right. If i remember, that is were mine rides. Got a hand held lazer temp gauge? Maybe get a reading off the radiator hose. I just did that with my Toyota Crapola. Ran 105` My feet froze.. Changed t-stat and now 172 on the hose and now it pumps out heat and cooks my feet. Now i can deice my windows with a 10 minute warm up. My Symptoms were for my stuck open or a lazy spring. Slow warm up. Side streets, it would start pumping out medium heat but after i hit the thruway i would loose all heat and freeze to almost death. The gauge bobbled all over the place. Now with new t-stat is goes up quick to just below half way and stays there no matter on side streets or thruway(air moving through the radiator or not).
I would think more of a concern would be the Hissing from the exhaust? Exhaust leak?
I would think more of a concern would be the Hissing from the exhaust? Exhaust leak?
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
The factory gauges on the truck are more of an on/off type gauge than an accurate reading of your temps. You could try a 203 deg thermostat http://www.dieselsite.com/index.asp?...ROD&ProdID=186 if you wanted.
Flushing the coolant is not a bad idea. If nothing else at least test it for freeze point and SCA.
Flushing the coolant is not a bad idea. If nothing else at least test it for freeze point and SCA.
Postmaster
Joined: Sep 2004
Posts: 3,916
Likes: 0
From: Bellingham, WA
I think the hissing is the exhaust back pressure valve, when you hit the pedal farther, does it stop? or get worse?
I think your temps sound right, and I have found these engines take awhile to warm up...lots of oil in there to get warm, 4 gallons....
I think your temps sound right, and I have found these engines take awhile to warm up...lots of oil in there to get warm, 4 gallons....
Elder User
Joined: Feb 2007
Posts: 857
Likes: 0
I echo the above post that the hissing you're hearing is the EBPV working to warm up the engine. I have two 7.3 PSD's and both of them do this. As for the factory temperature gauge, mine has never gotten more than 1/4 of the way into the normal operating range on the gauge on either truck. I've added an Aeroforce gauge that gives me a digital readout and when the factory gauge is about to the normal operating temp, the digital gauge is ranging between about 197 and 229 degrees.
Thread Starter
|
Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Yes, it's the EBPV working and when I hit the pedal further, it stops as it's supposed to. At what temperature should that valve stay closed? It seems to function until the truck is completely warmed up, which takes some time with this cold weather.
Is there a special coolant you have to run in these? Is it the type that's safe for aluminum parts? What should the pH level be? Do you still run the older style coolant or have you converted to the newer style?
Is there a special coolant you have to run in these? Is it the type that's safe for aluminum parts? What should the pH level be? Do you still run the older style coolant or have you converted to the newer style?
Smokin
Joined: Jun 2006
Posts: 8,849
Likes: 0
Yes, it's the EBPV working and when I hit the pedal further, it stops as it's supposed to. At what temperature should that valve stay closed? It seems to function until the truck is completely warmed up, which takes some time with this cold weather.
Is there a special coolant you have to run in these? Is it the type that's safe for aluminum parts? What should the pH level be? Do you still run the older style coolant or have you converted to the newer style?
Is there a special coolant you have to run in these? Is it the type that's safe for aluminum parts? What should the pH level be? Do you still run the older style coolant or have you converted to the newer style?
Special coolant, yes. Don't use the stuff in the yellow bottle you get at the parts store or walmart. You need to use coolant that is specifically designed for heavy duty trucks. Depends on what year your truck is as to what type of coolant it needs. It either came with green coolant, or gold coolant.
Some guys here have changed theirs over to the ELC, extended life coolant, and it is red in color.
Trending Topics
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
Yes, it's the EBPV working and when I hit the pedal further, it stops as it's supposed to. At what temperature should that valve stay closed? It seems to function until the truck is completely warmed up, which takes some time with this cold weather.
Is there a special coolant you have to run in these? Is it the type that's safe for aluminum parts? What should the pH level be? Do you still run the older style coolant or have you converted to the newer style?
Is there a special coolant you have to run in these? Is it the type that's safe for aluminum parts? What should the pH level be? Do you still run the older style coolant or have you converted to the newer style?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
That depends on what brand of coolant. Some is red, some is gold, and some is green. When dumping the red stuff in, you think you're putting tranny fluid in your radiator. It feels like you're doing something wrong.
Thread
Thread Starter
Forum
Replies
Last Post
Sassehole
1987 - 1996 F150 & Larger F-Series Trucks
11
Jan 22, 2013 02:17 PM
Turbo_Bimmer
1968-Present E-Series Van/Cutaway/Chassis
1
Jan 13, 2008 03:58 PM
matis
1983 - 2012 Ranger & B-Series
11
May 30, 2006 05:13 PM
Hank79
1973 - 1979 F-100 & Larger F-Series Trucks
10
Dec 4, 2002 05:18 AM
