Pushing coolant through cap
Thread Starter
|
Senior User
Joined: Apr 2003
Posts: 197
Likes: 0
From: St. Amant, La
Pushing coolant through cap
I have been having an issue with my '05 PSD pushing coolant through the coolant tank fill cap. The other day cruising on the interstae it started running hot, then would immediately cool down. It kept on doing this for about 2 hours. I ended up having to put about 4 gallons of water in it for that period. On the 4 hour return trip, I had absolutely NO issues. I even ran the ac for half the trip. This am, I got out of the truck after driving to work and I had coolant in the fenderwell again. It didn't run hot though. My first thought was a head gasket, but if I turn the truck off and let it sit for a bit, I still have pressure in the system. I'm thinking maybe a sticking thermostat, or maybe a bad coolant tank cap. 
Anyone had any issues like this?
Anyone had any issues like this?
Jäger
Joined: Jan 2005
Posts: 5,491
Likes: 5
From: Northern Arizona
What level do you keep the coolant at? It should be at the 'Min' level or it's likely to puke as well.
I was also told by a Ford parts guy that the cap should be replaced if it's been puked through more than once. Is it true? Dunno... but I replaced mine!
I was also told by a Ford parts guy that the cap should be replaced if it's been puked through more than once. Is it true? Dunno... but I replaced mine!
Resident smarta$$
Joined: Aug 2006
Posts: 4,929
Likes: 9
From: Oaks,PA
Agreed with Kepler, my truck had puking issues when I first got it, GREAT, huh? Turns out thanks to this site the degas bottle was overfull, sucked out the required amount of coolant and I got a new cap also. No more puking. Maybe I was one of the lucky ones
Posting Guru
Joined: Jan 2007
Posts: 1,527
Likes: 2
From: Grande Prairie, Alberta
If you are off warranty, check the level and get a new cap. If the condition persists take two aspirin and call your service department in the morning. Otherwise go in and get the test done to see if there is excess pressure being built up in the cooling system.
Trending Topics
Junior User
Joined: Jan 2008
Posts: 62
Likes: 1
From: Glasford, Illinois
You have bigger problems than a bad cap if you loose 4 gallons of coolant. Check your egr cooler or egr valve it sounds like the cooler is clogged and is flash boiling, that is why it still holds pressure. take it in and have it replaced or delete the hole egr system completely.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Senior User
Joined: Apr 2003
Posts: 197
Likes: 0
From: St. Amant, La
Well if I get it to about 17psi of turbo boost, which is 1 psi higher than the cap rating, then it pushes fluid. I can go all day long with out running it hard and it is fine. How hard is the EGR/COOLER to change? Where is it located on the manifold? I have an 8 hr trip tomorrw pulling my 5th wheel. I KNOW I will have problems if I don't get it fixed. Dion't have time for a dealer to screw around with it.
Elder User
Joined: Oct 2007
Posts: 706
Likes: 0
From: Virginia
Well if I get it to about 17psi of turbo boost, which is 1 psi higher than the cap rating, then it pushes fluid. I can go all day long with out running it hard and it is fine. How hard is the EGR/COOLER to change? Where is it located on the manifold? I have an 8 hr trip tomorrw pulling my 5th wheel. I KNOW I will have problems if I don't get it fixed. Dion't have time for a dealer to screw around with it.
Thread Starter
|
Senior User
Joined: Apr 2003
Posts: 197
Likes: 0
From: St. Amant, La
I don't think it's a head gasket. If I turn the truck off, and let it sit for a bit, the coolant system is still holding pressure. A blown head gasket would allow it to bleed down along with some coolant in the exhaust and/or oil system.
Where is the EGR cooler located on these engines? Top or back of the manifold? Can I just unplug it to test the theory? I would imagine that it is electrically controlled?
Elder User
Joined: Dec 2007
Posts: 971
Likes: 1
From: IA MN SD
It's amazing what you can find by spending just minutes using the search feature and poking around the TECH FOLDER located at the top of this forum.
Fleet Mechanic
Joined: Jun 2006
Posts: 1,589
Likes: 20
Well the turbo boost and cap problem ARE kind of related. If the turbo builds boost up to and above the caps pressure rating, it pukes. If I drive it below this, it NEVER pukes.
I don't think it's a head gasket. If I turn the truck off, and let it sit for a bit, the coolant system is still holding pressure. A blown head gasket would allow it to bleed down along with some coolant in the exhaust and/or oil system.
Where is the EGR cooler located on these engines? Top or back of the manifold? Can I just unplug it to test the theory? I would imagine that it is electrically controlled?
I don't think it's a head gasket. If I turn the truck off, and let it sit for a bit, the coolant system is still holding pressure. A blown head gasket would allow it to bleed down along with some coolant in the exhaust and/or oil system.
Where is the EGR cooler located on these engines? Top or back of the manifold? Can I just unplug it to test the theory? I would imagine that it is electrically controlled?
DSMMH
Thread Starter
|
Senior User
Joined: Apr 2003
Posts: 197
Likes: 0
From: St. Amant, La
It's amazing what you can find by spending just minutes using the search feature and poking around the TECH FOLDER located at the top of this forum.
Anyone?