Where can I get a diagram of the 1990 BMW 525i water pump

fuse box diagrams

BMW 5-Series (E39; 1996 - 2003) - fuse box diagram ...

https://www.autogenius.info > bmw-5-series-e39-1996-...
Aug 26, 2018 - BMW 5-Series (E39; 1996 - 2003) - fuse box diagram. Year of production: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 ...
Missing: 740il ‎' Must include: 740il

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  BMW 3 Series E36 and E35/5 (1990 - 2000) - fuse box ...

  https://www.autogenius.info > bmw-3-series-e36-and-e...
  May 28, 2018 - BMW 3 Series E36 and E35/5 (1990 - 2000) - fuse box diagram · Front power distribution box · Relay carrier under LH side of dash · Connector strip ...
  

Picture & amperage & description of every single fuse ...

https://www.bimmerfest.com > ... > E39 (1997 - 2003)
Mar 1, 2013 - There are SIX fuse box locations in my 2002 BMW 525i E39 (here is a 1997 540i fuse location chart):. EF1 to EF5 <= at the back of the ebox ...

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STOP what you are doing before you damage something!! Whatever you are trying to remove is not the water pump. Neither the sparkplugs nor the "timing belt" cover needs to come off. Remove the fan belt. Remove the fan (the nut is LH thread- means it turns left to tighten and right to loosen). You will need a large wrench (32mm) availible at sears.The water pump is directly behind the fan and is held in by 4 10mm bolts.

There's trapped air in the cooling system.

• You need to remove the bleeder screw on top of the radiator when adding water to the expansion tank.
• With the engine running, pour water into the expansion tank till you see air go out through the bleeder screw's hole.
• Just keep adding water until no more air bubbles come out then just put the screw back in place.
• Then fill the expansion tank to it's normal level/line.

Have you found the fuse box, under the bonnet on LHS of vehicle?
In the lid of the fuse box it will outline which fuse controls the function.

Try replacing the thermostat. It is supposed to open when the water temp reaches a certain point usually around 180 degrees. It might be stuck in the closed position.

Fuel Pump and fuel filter change sounds to be what the Dr ordered also change the fuel pressure regulator all at the same time. You will be 100%

Troy,
Thank you for asking me to help you with your problem. However, this is either not within my area of expertise or the question is unclear or there is not enough information and I cannot help you at ths time.

Typically, you will find the fuel pump for a BMW 525 located under an access panel in the trunk. Remove the contents of the trunk, remove the floor/spare tire cover and a metal access panel will be visible on the floor being held in by several small bolts. The panel is about 4"x6" in size. Remove the bolts, carefully pry up the panel (it has some sticky sealing material) and the fuel pump mounted on top of the gas tank will be visible with fuel lines entering/exiting it. This is where it was for my 1990 525i.

No such pump! Make sure you have anti-freeze in the radiator. It circulates better than just water, because water boils and turns to steam (goes UP) proper antifreeze helps it not have pockets of steam/air.

An image of a serpentine belt, hope this will help you,
Eitan.