I've seen it before, but have always wondered (as I've never seemed to be able to "remedy" the situation): what causes my upper radiator hose to collapse, like it's being sucked-shut (squeezed/pinched closed), when my vehicle cools down? I'm supposing some sort of air-pocket/air-lock type of thing, but my expansion tank stays within range (though I did over-fill it recently) - but then shouldn't that cause the system to 'balance-out' (i.e. replace whatever space may be dis-placed by air)??
Just curious (or am I IN TROUBLEHERE!?!.)
Thx!
glenn ...
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`99 RANGER Stock - 'SuperCab', 4X4, 3.0 ("Vulcan" - ha), 4R/55E-Auto., 4.10-REAR, (T-O-R-Q-U-E!), 235x75/15XL=Uniroyal "Liberator" A/T's, Cold-Weather PKG. - MILEAGE: (160,000 - OCT `07) 165,000-FEB `08 (~*E85 "capable", but not currently suckin' on the corn supply *~)
Last edited by TOUGHLover : 12-05-2007 at 03:03 PM.
It isn't allowing the vacuum to pull the water from the overfill it is usually a problem
with the radiator cap or if it is pulling the water it needs from the of and still collapsing
the hose you probably have weak hoses. There is a cure for it and that is a big spring
that goes inside the rad hose the full length of it since it is usually the longest hose
that has the problem you only need one.
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86 fs bronco 302 auto 33x12.50 at rusty but trusty!
04 Ranger edge 3.0 5 speed auto 4.10
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Yes sir thanks. Most likely the radiator-cap I suppose as I changed the radiator hoses this past summer (approx. 6 months, about 10,000 miles ago). The cap is always ('often seems' to be anyway) a likely suspect (am on my second, maybe third, in 7/8 years - 162,000 miles). I'll "attempt" to clean it up first and see if that helps - I've found plenty of times that parts such as this can often be cleaned - sort of 'renewed' - to extend their life - at least a li'l bit).
Of course, I could have a weakness in a heater-hose considering the age/mileage (though they both appear to be in real good shape). I haven't really found (seen/noticed) any other 'by-pass' type hoses or anything in the system. God-forbid a head gasket or something of the like - can't afford that right now!
Thanks again - will let you know what I find.
glenn ...
PS - I have always preferred those straight ("flex"?) hoses with the spiral wire inside - tough to find anymore (I think??) - everything seems to be pre-molded - at least the ones with proper measurements for my app. - Thx again.
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`99 RANGER Stock - 'SuperCab', 4X4, 3.0 ("Vulcan" - ha), 4R/55E-Auto., 4.10-REAR, (T-O-R-Q-U-E!), 235x75/15XL=Uniroyal "Liberator" A/T's, Cold-Weather PKG. - MILEAGE: (160,000 - OCT `07) 165,000-FEB `08 (~*E85 "capable", but not currently suckin' on the corn supply *~)
Last edited by TOUGHLover : 12-07-2007 at 02:34 PM.
Most likely a bad radiator cap. It not only releases excess pressure but also has a valve that allows air to enter the cooling system when the engine cools off.
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(~*E85 "capable", but not currently suckin' on the corn supply *~)
