My check coolant light came on and the coolant was low so I put some
in. A week later it came on again and before I could get to the next
exit it was over heated and the hose from the radiator blew off. I
took it to a local bmw mechanic and they were very nice and seemed
really competent. They replaced the thermastat and the radiator and of
course the hose. I picked the car up and it was fun for the 45 min
drive home. I parked, went to do some errors later and the dang light
is on again :( . 1/2 the reserve tank is full and it seems to be
running in the middle of the temp. :) The heater does not seem to be
working either. :( No leaks under the car at any time. :?
Could they have forgotten to reset the computer?
Could it be the sensor?
Thanks for the help.
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A radiator hose blew off?
That sounds like something more serious than a thermostat, especially since
you've been losing water regularly as well. If your temp is fine, I suggest
you check your radiator hoses again next time you stop and switch off the
engine after a drive. Your radiator hoses should be soft (don't burn
yourself), otherwise there is excessive pressure in your cooling system,
most probably caused by a blown cylinder head gasket.
If the pressure builds up like this, and your hoses are in good condition
and properly clamped on, water will seep out somewhere and could even damage
What year and model are we talking about?
Regardless of model, it sounds like it wasn't bled correctly. BMW's are
pretty particular about this. If after rebleeding you still are loosing
coolant, the year and model will be important as the different engines have
their own quirks that are prone to leakage.
I had a similar scary moment last night in my E38 730i V8. First time
I'd put the heater on in anger since buying the car last month. It went
about 3/4 of the way up the temp gauge and I was getting no heat from
the heater. Had to return home to bleed the system and top up the
coolant. She's been fine since.
It had a service not long before I bought it, as it was summer it's
possible the so called mechanic who did the coolant change didn't turn
the heater on when bleeding the system.
Who needs a life when you've got Unix? :-)
Email: email@example.com, John G.Burns B.Eng, Bonny Scotland
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