BMW Tech Tips, How-tos and News - Bavarian Autosport Blog » Cooling System

1984 BMW 633csi Thermostat Removal E24 M30

Peter — Fri, 23 Jul 2010 17:13:04 +0000

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

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BMW 1995 BMW 740i Cooling System Leak – V8 M60 M62 (E31 E32 E34 E38 E39 X5)

Peter — Fri, 16 Jul 2010 18:08:29 +0000

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

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2003 BMW 3.0 X5 Noisy Mechanical Belt Tensioner Pulley – M54

Peter — Wed, 07 Jul 2010 20:33:39 +0000

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

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BMW V8 Preventative Maintenance – Water Pump & Belts – E31, E32, E34, E38, E39, X5

Peter — Wed, 07 Jul 2010 20:29:56 +0000

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

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BMW E46 Lower Radiator Hose Leak at Temperature Sensor – M54 – E39 X5 X3 Z4 Z3

Peter — Wed, 07 Jul 2010 19:30:14 +0000

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

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BMW X5 Radiator Hose Popping Off

Otto — Wed, 07 Jul 2010 19:03:12 +0000

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.

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1998 BMW 323i Low Temperature Gauge – Thermostat

Peter — Fri, 25 Jun 2010 19:26:47 +0000

This answer is applicable for many BMWs in addition to the one listed below.

Q I have a dumb question. (“No sense being stupid if you don’t show it”…. My DAD) 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

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BMW E21 323i Overheating

Otto — Fri, 18 Jun 2010 21:24:31 +0000

Q car year: 1979 car model: 323i I just bought a 1979 European 323i that is overheating. it has just a push fan on the radiator and I need to find out if it needs or is missing an engine fan. I brought up the question with the previous owner and this is what he said. “the early

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BMW E30 Overheating & Bleeding

Otto — Fri, 18 Jun 2010 20:54:23 +0000

Q car year: 1989 car model: 325i This one seems to overheat to a boil, even after a decent bleed. There doesn’t seem to be water flow through the radiator. The water pump has been replaced and the radiator seems to be relatively clean (did a thorough vinegar soak). Also, a small tapered shaft “appeared” left over after

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BMW V8 M60 / M62 – Water Pump – 740i, 540i, 840i

Otto — Tue, 25 May 2010 14:42:31 +0000

This answer is applicable for many BMWs in addition to the one listed below.

Q car year: 2000 car model: 740iL Are there any sites which to possibly view a water pump replacement on the V8 application in detail?

A We have not done a V8 water pump DIY article. However, the Bentley repair manual will cover the procedure and

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