This is great information for the heater-hose thread, so I'll cross reference.
- How to locate all the cooling system hoses in the BMW E39 (
1)
I think, at this point in the E39 life, that all the rubber is likely due for replacement.
- What is the recommended parts list for a complete cooling system overhaul (
1)
What we need is a comprehensive list of all the hoses, if that doesn't already exist in the two combined threads above...
See also:
- What is the recommended parts list for a complete cooling system overhaul (
1) quickie telephone verbal instructions for unlocking the high instrument cluster on the E39 to test the koolant KTMP (
1) & how to tell whether you have the high or low on board computer cluster (
1) & a video showing how to unlock the low OBC (
1) or the high OBC cluster for diagnostics (
1) & how to change the OBC MID IHKA KTMP temperature from degrees Celcius to Fahrenheit (
1) & how to locate all the cooling system hoses in the BMW E39 (
1) & how to non-destructively remove the heater hoses (
1) or radiator nipple (
1) or expansion tank nipple (
1) or overflow hose Oetiker clamp (
1) & how not to misplace the thermostat wiring loom (
1) & how not to twist a plastic bleeder screw (
1) & the cn90 trick to get the fan clutch nut back on (
1) & bluebee tricks to get the radiator back on in the I6 automatic (
1) & the teklord69 trick to cutting the fan shroud so that the viscous van clutch nut can be removed easily (
1) & what is the proper coolant level bobber stick height (
1) & what to do when your expansion tank coolant level sensor float measuring stick is MIA missing in action (
1) & a mechanical fan clutch delete to switch to an electrical fan (
1) & where to find leaks when the CHECK COOLANT LEVEL is lit on the instrument cluster (
1) & a pictorial saga of all the ways the cooling system can fail (
1) & how to diagnose lack of HVAC/IHKA heater core heat with cooling system (auxiliary pump) at idle (
1) & where the coolant level sensor cable goes (
1) & what is the o-ring size for the coolant temperature aux fan thermoswitch (
1) & how the thermostat works, including what the normal temperature of the coolant is when the thermostat opens under normal conditions (
1) & how to remove just the expansion tank to repair a leak during your cooling system overhaul (
1) & how the expansion tank works (
1) & users' behr/hella cooling system autopsy photos (
1) & what to check on your new Behr/Hella expansion tanks to ensure it's not DOA (
1) & how to test the cooling system auxiliary electrical fan (
1) & a how to replace the aux fan (
1) & where is the auxiliary fan fuse F75 (
1) & where is the aux fan relay (
1) & how to make your own BMW special cooling & belt drive system counterhold tools (
1) & how to retrofit brass bleeder screws (
1) & how to modify the cooling system expansion tank 2 bar cap to 1.2 bar to vent at a lower pressure (
1) & how to modify the cooling system pressure with zero psi coolant (
1) & how to eliminate weak recycled plastic with Zionsville aluminum (
1) & how not to (JB Weld) fix a cracked radiator or other cooling system overhaul leaks (
1) & how to tell the age of your cooling system by its date date codes, stickers, and plastic molded markings
(1) & how to retrofit a coolant level sensor to an E39 that doesn't have it (
1) & how to test the cooling system auxiliary electrical fan (
1) (
2) & a DIY for how to replace the aux fan (
1) (
2) (
3) & where is the infamous auxilliary fan Fuse F75 (
1) & where is the auxiliary fan relay (
1) & summary advice to provide users who suspect a major engine repair due to overheating (
1) & how to test an overheated engine for a blown head gasket, cracked heads, a warped block, stripped head bolt threads, cam seizures, contaminated bearings, coolant hydrolock, or piston, ring, or valve damage (
1) & what are the major factors in deciding whether to rebuild the engine, replace the engine, or sell the car (
1) & a DIY for replacing the I6 M54 head gasket (
1) & a DIY for replacing the V8 M62TU head gasket (
1) & why these engines are so prone to heat-related damage in the first place (
1) & welding the crack between cylinder #3 and the water jacket on the exhaust side (
1) & what engine swaps are most recommended (
1) & where to obtain a new or rebuilt head (
1) or a replacement short block or long block (
1) & how to lift & remove the engine (
1) & how long can you drive your BMW E39 with the viscous fan clutch removed (
1) & what is the most often recommended coolant (
1) & tricks for efficient flushing (
1) draining (
1) bleeding (
1) and coolant refilling DIYs (
1)