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This answer is applicable for many BMWs in addition to the one listed below.
Q
2001 525i
Cooling fan runs excessively. I installed new clutch, but still no difference. Suggestions?
A
The engine driven cooling fan is operated via a thermostatically controlled fluid clutch assembly. When the air coming through the radiator is below a given temperature (normal engine operating
Continue reading BMW Engine Fan, Clutch, Auxiliary Fan – Running All The Time?
Q
car year: 2000
car model: 740i
When the accelerator is pressed hard from a stopped position, it sounds like the radiator fan makes a louder sound than normal. Also, there is a banging noise as if the motor mount is broken. Then when sitting at an idle, there is a vibrating sound that is sort of loud.
A
Continue reading BMW E38 Loud Fan Noise And Vibration – 740i, 740il
Q
My BMW is running on the cool side, the temperature indicator just makes it out of the blue area on the dial, as I recall it used to run pretty much straight up, half way between the red and the blue. I am only worried about the engine running too cool and maybe loosing
Continue reading 1998 BMW 323i E36 M52 Thermostat – Low Engine Temperature
This answer is applicable for many BMWs in addition to the one listed below.
Q
318 TI
It appears I have a huge coolant leak, but can’t see up from bottom.
A
First, we must determine what general area the leak is coming from. Is the leak from the front of the engine, rear of the engine, radiator area,
Continue reading BMW M42 M44 Coolant Leak – 318i, 318is, 318ic, 318ti, Z3
Q
I have a 1984 633 csi. While trying to remove the thermostat housing to replace the thermostat, I broke the 1st bolt I tried. To make it easier to drill out, I thought it might be easier to remove the entire coolant housing from the engine and work on it on a workbench. My
Continue reading 1984 BMW 633csi Thermostat Removal E24 M30
Q
I recently replaced my water pump gasket and coolant tube seals. And found that I still have the same leak I originally started with around the large coolant tube seal. Could this be coming from a bad water pump or could it be a faulty installation. Please help.
A
I would say that there may
Continue reading BMW 1995 BMW 740i Cooling System Leak – V8 M60 M62 (E31 E32 E34 E38 E39 X5)
Q
I own a 2003 BMW 3.0 X5 with 80,000 miles. Recently it was at the BMW dealer for service and I mentioned hearing a noise that appeared to be coming from the area of the serpentine belt. The noise occurs mainly at idle and seems to go away after the engine warms up. The
Continue reading 2003 BMW 3.0 X5 Noisy Mechanical Belt Tensioner Pulley – M54
Q
How often we need to replace the water pump and power steering belts and should both belts replace in the same time.
A
We recommend replacement of the accessory drive belts, for your V8 engine, at 60,000 miles or 4-years. The alternator, water pump and power steering are all on the same belt. The A/C
Continue reading BMW V8 Preventative Maintenance – Water Pump & Belts – E31, E32, E34, E38, E39, X5
Q
Replaced a bunch of parts, one is the lower radiator hose when doing a belt replacenment. It is leaking at the sensor connector. Replaced the sensor and it is still leaking with new. Here is a reply from Mike at BMW CCA. Do you have some additional recommends? “The new style hoses have a
Continue reading BMW E46 Lower Radiator Hose Leak at Temperature Sensor – M54 – E39 X5 X3 Z4 Z3
Q
I have a 2002 BMW X5 30.i suffered a overheating episode.
So far I have replaced the Coolant expansion tank, the Thermostat, New Radiator, New upper hose, new lower hose. The problem I am having is in about 20 to 30 minutes driving the upper radiator hose pops off the coolant expansion tank and the radiator.
Continue reading BMW X5 Radiator Hose Popping Off
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