Problem with collapsing radiator hose!!
Thread Starter
|
New User
Joined: Dec 2005
Posts: 6
Likes: 0
Problem with collapsing radiator hose!!
Ok I now own this ford ranger 88 2.9 litre, and at first my top radiator hose was collapsing when the engine was shut off and cooled down. Well I replaced the thermostat, upper hose, and radiator cap and that stopped that problem.
Well today I was out messing around under the hood checking things out and I decided to rev it up by the throttle body. While reving it up I noticed the TOP radiator hose is collapsing, and the more rpms you gave it the tighter it would collapse! Now the ONLY thing I haven't replaced is the water pump. The pump that is on it MAY be original since it says motorcraft on it. However I really dont see how a new water pump would cause this problem to stop.
My question is what do you think it may be?
thanks a ton
<!-- / message -->
Well today I was out messing around under the hood checking things out and I decided to rev it up by the throttle body. While reving it up I noticed the TOP radiator hose is collapsing, and the more rpms you gave it the tighter it would collapse! Now the ONLY thing I haven't replaced is the water pump. The pump that is on it MAY be original since it says motorcraft on it. However I really dont see how a new water pump would cause this problem to stop.
My question is what do you think it may be?
thanks a ton
<!-- / message -->
Laughing Gas
Joined: Jan 2005
Posts: 834
Likes: 0
From: South East Florida
same problem here with the collapsing hose . . . . since my theory of it being an old hose that just can't hold up and collapses under pressure anymore has just been debunked . . . i hope someone can help us out lol
how dangerous to the cooling system is/can this be?
how dangerous to the cooling system is/can this be?
Thread Starter
|
New User
Joined: Dec 2005
Posts: 6
Likes: 0
Well I replaced the upper hose with a new one but not the lower because I didn't have time at the moment and had nothing to catch my antifreeze. The lower one I am not having a problem with collapsing, its the top new hose
Post Fiend
Joined: Feb 2000
Posts: 11,496
Likes: 6
From: Kansas
You probably need an anti-collapse spring inside the hose. Some hoses are very robust and resist collapsing better than others.
The lower hose can collapse from engine vacuum. Anything that restricts your cooling has the potential to damage the engine.
The lower hose can collapse from engine vacuum. Anything that restricts your cooling has the potential to damage the engine.
Thread Starter
|
New User
Joined: Dec 2005
Posts: 6
Likes: 0
Originally Posted by Ultramagdan
You probably need an anti-collapse spring inside the hose. Some hoses are very robust and resist collapsing better than others.
The lower hose can collapse from engine vacuum. Anything that restricts your cooling has the potential to damage the engine.
The lower hose can collapse from engine vacuum. Anything that restricts your cooling has the potential to damage the engine.
Post Fiend
Joined: Feb 2000
Posts: 11,496
Likes: 6
From: Kansas
If you look at older cars, you will find many that had springs inside the upper radiator hose. The upper hose lives in a harsh environment since the themostat blocks coolant from flowing through it until the engine is warmed up. In any case a spring will address the issue.
Last edited by Ultramagdan; Dec 11, 2005 at 07:46 PM.
Trending Topics
Senior User
Joined: Mar 2003
Posts: 397
Likes: 0
From: nova scotia, canada
when u take the rad cap off does the hose spring back. the rad cap is supposed to let the system suck in coolant from the recovery tank. if the hose seems fine (top rad), then check the small rubber hose to the inlet on the rad (take it off and blow a small burst of shop air through). if thats fine then replace the rad cap. only try this if u r sure that the hose is fine. a spring will not fix the problem. either replace the hose or find the problem. then if you want to waste your money and time on a spring go ahead but if you just add it now you may be masking another problem.
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
|
New User
Joined: Dec 2005
Posts: 6
Likes: 0
Originally Posted by beer boy
when u take the rad cap off does the hose spring back. the rad cap is supposed to let the system suck in coolant from the recovery tank. if the hose seems fine (top rad), then check the small rubber hose to the inlet on the rad (take it off and blow a small burst of shop air through). if thats fine then replace the rad cap. only try this if u r sure that the hose is fine. a spring will not fix the problem. either replace the hose or find the problem. then if you want to waste your money and time on a spring go ahead but if you just add it now you may be masking another problem.
Last edited by 88fordranger; Dec 11, 2005 at 09:26 PM.
Senior User
Joined: Mar 2003
Posts: 397
Likes: 0
From: nova scotia, canada
it sounds to me like there is a restriction in the head or pump itself that is causing to much pressure differential. is all the air out of the system? try taking the thermostat out and seeing if the problem is still there. do you get lots of heat out of the cab heater? *first* try pinching off one of the lines to the heater core (pass side firewall) and see if that makes a difference if it does then the passage from the water pump to the head is restricted and the flow is comming from the pump through the core through the head and to the rad. let me know what happens please. this is a long shot but in theory it could happen.
Thread
Thread Starter
Forum
Replies
Last Post
Micaiah Day Lee
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
2
Jul 28, 2017 07:13 AM
Keystoner16
1968-Present E-Series Van/Cutaway/Chassis
8
Dec 3, 2015 06:17 PM
kiteman
Explorer, Sport Trac, Mountaineer & Aviator
1
Jul 21, 2011 05:02 PM
norm805
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
Aug 16, 2009 09:26 AM
broncoboke
1987 - 1996 F150 & Larger F-Series Trucks
18
May 23, 2007 10:30 PM
