Problem with collapsing radiator hose!!
#1
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 -->
#2
#3
#4
#5
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.
#6
#7
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; 12-11-2005 at 07:46 PM.
Trending Topics
#8
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.
#9
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; 12-11-2005 at 09:26 PM.
#10
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
07-28-2017 07:13 AM
Keystoner16
1968-Present E-Series Van/Cutaway/Chassis
8
12-03-2015 06:17 PM
kiteman
Explorer, Sport Trac, Mountaineer & Aviator
1
07-21-2011 05:02 PM
norm805
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
08-16-2009 09:26 AM
broncoboke
1987 - 1996 F150 & Larger F-Series Trucks
18
05-23-2007 10:30 PM