Over heating

Asked by Jun 14, 2018 at 02:04 AM about the 2001 Subaru Forester

Question type: Maintenance & Repair

So I was driving for maybe 30 minutes and
my large radiator hose blew off while I was
driving, obviously the car began to over
heating so I pulled over got some 5050 and
poured that in (about 1 gallon) after the car
cooled off and reattching the hose. The car
is still overhesting within  2-5 min of idling.
Does anyone have any idea why the hose
would have blown off to begin with? It
seemed like there was a lot of pressure build
up to blow it off as it appeared the that the
screw clamp was pretty tight still. Also any
suggestions as to what to try next to stop
the car from over heating even though the
coolant is replaced and the hose is fixed.
There is no apparent leak. Thank you!

1 Answer

105

When it blew..sounds like maybe just a weak hose clamp. But when it did blow..it was obviously running, your system has most likely got a ton of air in it, you need to burp that air out. Ill give you a quick rundown and a simple test you can do to confirm it. Basically let your car start...warm up. turn on your heat full blast..if that heat don't feel up to par with you then you have a bubble. Let it cool down, remove your radiator cap. Now find a jug that will fit snuggly over the radiator cap hole and basically fashion a bucket type thing that will catch fluid when that thermostat opens. When you get that set, attach it to your radiator and turn on the vehicle. Let it run for say...a good 20 minutes or so. Let that thermostat open and close multiple times. You will know because the fluid level on that jug will raise and lower while removing air bubbles along with it. You might have to do it a time or two. If it don't seem like that helped..or fluid don't raise and lower while doing this then your thermostat is stuck shut or open

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