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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 05-29-2009, 11:12 AM   #1
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Question help taking off lower radiator hose

how do we take off the lower radiator hose? mine has a small leak and i need to replace it i bought a new lower radiator hose and temp sensor thnx in advance
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Old 05-29-2009, 02:56 PM   #2
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yeah, it's a b!tch to work on. It's pretty straight forward except the hose is stuck and the tight space to work on.

The hard part for me are:
1. Trying to disconnect the hose from the radiator.
2. Putting back the hose to the thermostat.

If I would do it again, I would remove fan shroud to remove the thermostat housing to get to disconnect hose.

Then have patient to remove the lower part. I used screwdrivers wedge it out(I don't know if it's easier to try to cut the connect without damaging the radiator part).

Connect the new hose with the thermostat, put back the thermostat then the connect the radiator part. Finally, put back the shroud, sensor, wiring etc...

Maybe others have a better method then mine...
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Old 05-29-2009, 04:21 PM   #3
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Put some WD40 around the hose connectors; it helps during the remove.
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Old 05-31-2009, 12:45 AM   #4
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anyone else ?
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Old 06-01-2009, 11:40 AM   #5
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Old 06-02-2009, 11:37 PM   #6
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I recently replaced my thermostat and hoses and the lower hose definitely gave me the most problems. After a few hours of struggling to no avail i finally broke out the Dremel tool and very very carefully ground away at the hose coupling until I removed enough material so that I could insert a big blade screwdriver in the slot. I then twisted it and was able to crack the hose coupling away from the radiator. Not something i would recommend doing but i was kinda outta ideas outside of removing the radiator.
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Old 06-03-2009, 02:07 AM   #7
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WD-40 makes wonders. just let it soak for a while before removing
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Old 06-03-2009, 02:11 AM   #8
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Radiator hoses are a *****.
TWIST the hose first. Don't just try to pull it off.
You twist it to break the "bond" or "seal". Once its broken loose it is much easier to pull back and off.
Twist from side to side (shimmy) while pulling back to get it off after.
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