Part 1 BMW Cooling System Overview with Common Failures for e36, e46, e34, e39

[zer0luink]

I don't see how its the same as a e39 my e39 has the thermostat alot different than this one. :(

[1976scoop]

Some people still cling on to the myth that these cars are reliable, high quality machines. Once maybe.

[sinblesser]

So much plastic. O.o

[silverduan]

suggestions on where to buy these engine improvements?

[chinnosequeira]

WHAT A WONDERFUL... HELPFUL VIDEO.....!!! Thanks a lot

[Jetubeb]

One question, I have a e46 , I wanna replace the water pump, but it has a O ring, where exactly does it go?

[skillz1855]

@Jetubeb it goes around the water pump itself to seal it where the pump meets the block, if its a quality pump it should already be on the pump, use a lil bit of silicone so that it goes in smoothly

[ir0nmanx]

I replaced my waterpump on my e46 every year for 2 years due to the plastic impellers failing. So glad I traded it in for a Honda.

[dieudonneMC]

I hate when they use the plastic! GARBAGE!!!!!

[silvermediastudio]

E46 3-series thermostats often fail wide open, and the engine runs cold as a result, lowering MPGs as the computer dumps fuel to compensate. It gets worse on the highway with increased air flow. What internally causes this problem? Any way to repair a thermostat like that, or do they just have to be replaced?

[stepulevicius]

great video, thanks 

[MrGlysantin]

Just a information...cooling generally never dry up with white stainings. If the right coolant is used in the right concentration this cannot happen

[scant6681]

there is a electronic connection on that black thermo housing, so how would the aluminum housing work in place???

[528im52]

@scant6681 The e36, e34, e39's have housings that do not have the electronics (some of the e39's do), they are just a housing that holds the thermostat. For the later e39 and e46's they do have the electronics and would not be able to use the aluminum housing.

[hector1130]

i know my e-36 is all plastic =[

[mexican01010]

lmao at 7:10 he said nipples

[BimmerM5e39]

Why didnt bmw just use electric cooling fans, all this plastic junk just makes me angry. 2 electric cooling fans if 1 fails its still 50% more reliable than a broken impeller.

The 94 impala ss/ caprice 9c1 has electric cooling fans and so do 98 and up crown victorias which police still use.

[whatthehallbetch]

@BimmerM5e39 my e46 has both electric and engine driven fans

[Oozingmachismo24]

lol..germans exposed

[foot2wood]

I'VE HAD 4 E39's AND HAD TROUBLE WITH THE COOLING SYSTEM ON 3 OF THE 4... ONE OF THEM 3 TIMES... IM SO DONE WITH THESE.

[deluxedookie]

pay all that money and you get plastic

[TigerOscar78]

Does anybody know where to find plastic replacement Pulleys for metal ones?

[528im52]

@TigerOscar78 We have them at bmpdesigndotcom

[scant6681]

@528im52 Quick question, would this aluminum thermostat housing connect the same way as the orignal plastic end connection?

[528im52]

@scant6681 It does for the hose-clamp style hoses, if your vehicle has the quick-disconnect hoses this housing will not work.

[onabreeze]

Plastic against hot metal that cant be good. Where can i get aluminium parts and metal parts?? to replace plastic parts, good video thanks for shareing.

[JDBEDORE]

@onabreeze azautohaus has the best prices (if you live in the US, anyway, i don't know about their international shipping)

[sphinxtk]

Quick question:

How common is it for the thermostat housings to crack when fitting? I found, even with a new item, the bottom lug would crack before it was able to compress the O-ring and profile gasket.

[thefloorjacker]

Must say great video's all of them,just what iv been looking for a ong time.thanks for that.

Is it possible to one on the rear trailing arm bushings of the e46 coupe? and also how to pressure test the cabin heater matrix and the cooling system itself

[flubbernuget]

Very good video.  Very informative. Please post more of these types of videos.

[dan87951]

Plastic pulleys and housing.. LOL what a POS. Wheres the quality??

[LittleModig]

I'm almost sure all this car are the new late model from 90's two about 2010?people asked me why I love my older model bmw from the 80's.well they use to build them much much better quality.i think.....

[ALLANVC1980]

@LittleModig True, I have the M10 motor --bullet proof!

[LittleModig]

@ALLANVC1980 hey my cars that I have are 1987 325es BMW,a 325 1987 also,and a 1985 318i BMW.I"m going this weekend to check for a 2002 model from 1974 0r 76.

[ALLANVC1980]

@LittleModig hey did you check the 2002?

[LittleModig]

@ALLANVC1980 yeah I did,It was a bit over my budget ,I personally dint think it was the right price for its value.also it had the squared rear lights and personally I preferred the Round tail lights. so I'm still hunting for one hahaha Ciao

[TXcodeDesigner]

Great video and information!

[TheJ631]

i recently replaced my water pump with the metal impellar and thermostat housing on my e36 but could not for the life of me find anywhere that sold the aluminum housing so had to get a new plastic one:(

[YouStubid]

Plastic plastic plastic... What kind of moron decides to use plastic in such critical components?

[merajj]

It was probably just cost cutting sadly.

[evanellakb]

@YouStubid - it was probably Polish Day at BMW

[yamarydr]

@evanellakb - more likely BMW has a Jewish day. So you have to constantly come in for service and spend money on components.

[kfl21]

@YouStubid the same moron that buys the car but seriously its cheaper to use strog plastic rather than use metal components

[picazo57]

where can i buy these parts? tnx

[jsjassem]

very nice thanks to you

[doldei]

five stars guys ,all good advices ...

[DimitriNakos]

the plastic thermostat housing part where the hose connects over broke where the circle clamp goes around it and broke the plastic piece right off... ima get a aluminum one tomorrow thx. you can add that mess up to the things that go wrong with those parts.

[Fulano2000]

WOW, thank you soo much, great vid. can you send me something on pulley tensioners.(Hydraulic)

how to replace. and what do i need.

[ikirika]

what type of coolant would you recommend to top up a 325 i

[supagog]

interesting

[l3000c]

first!!!

Great vid :) thanks!!