1997 E36 328i bleeding coolant system(FIXED)

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  1. 1997 E36 328i bleeding coolant system(FIXED) 
    #1
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    bowster12000's Car Details
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    hey guys i have now discovered the fault and fixed it, trouble im having now is bleeding the system is there anyone who can give me good advice on how to do this so i can get it back on road, temp stays dead on half, just have no heaters so must have huge air block. i have jacked it up drivers side as apparently this helped and left it running with blled screw out, topping it iup every time it is letting air out still no heaters any info much appreciated
     
     

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    xXxStKxXx's Car Details
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    How to bleed the cooling system.
    1.Jack the front of the vehicle up onto stands as high as possible,
    2.Turn the ignition on,engine off,heater on fan setting 1 and temperature fully hot,
    3.Remove the rad cap/expansion cap,remove the bleed screw from the radiator and IF you have them the bleed screw(s) from the thermostat housing/top hose, return pipe or EGR thermostat.
    4.Fill the radiator up and keep pouring till there are no more air bubbles coming out from the bleeds, using a funnel that fits tight in the radiator neck and filling it full of water will help push any troublesome air out, when good you can then install the bleeds and tighten down(don't snap them),ensure the rubber O-rings/seals are still on the screws/on the bleed holes.
    5.Suck some water out so it's not full to the brim, replace the cap and then start the car. Run her up and check for heat from the vents when warm and check if over heating still persists. You may have to bleed troublesome cars twice(but rare).
    6.If all is good then check the water level again in the morning when cool.
     
     

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    thanks i tried this anyone else have any advice this motor a ******* i swear lol
     
     

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    mmm from your first post it said you only jacked up the drivers side-You need to jack the whole of the front of the car up as high as you can get it on stands.......I've seen this done where they had a tow truck that lifted the front end way high just so they could clear the airlock
     
     

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    Quote Originally Posted by bowster12000 View Post
    thanks i tried this anyone else have any advice this motor a ******* i swear lol
    Cant remember but...

    dont these things have a heater valve??

    check the 2 heater pipes that go into the bulk head or both hot?

    one hot?

    non at all?

    if one is hot and the other is cool...........then you may well have a blocked matrix.

    if both are cool and the car is at runing temp...............trace the hoses back, one my have a heater valve. check the pipe before the valve, if its hot then the valve is shot.
     
     

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    the hose split going into the heater matrix, heaters worked fine before, it defo air block. will jack the car as high as it goes tomorrow is there anymore beed screws only one i can find is on the rad
     
     

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    Quote Originally Posted by Big Donk View Post
    Cant remember but...

    dont these things have a heater valve??

    check the 2 heater pipes that go into the bulk head or both hot?

    one hot?

    non at all?

    if one is hot and the other is cool...........then you may well have a blocked matrix.

    if both are cool and the car is at runing temp...............trace the hoses back, one my have a heater valve. check the pipe before the valve, if its hot then the valve is shot.
    Yes they do have a heater valve N/S bulkhead
    Climate control has a dual valve.
     
     

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    Procedure for bleeding the cooling system on all cars with header tank on the side of the rad...
    1. Remove bleed screw from top of rad
    2. remove rad cap
    3. heater to full hot, ignition on, engine off
    4. fill rad until coolent flows out of bleed hole with no bubbles
    5. refit bleed screw
    6. top up and refit rad cap

    Job done
    Try to do it on level ground and it won't be necessary to jack the car up
    If it doesn't bleed fully, then either a hose has collapsed or the heater valve is stuck shut or the heater is connected the wrong way round (ie inlet to outlet pipe, etc)
    1996 E36 328i SE manual, 4dr Montreal Blau
    1987 E30 M3 Henna Rot (Euro, was 195bhp CAT, now no CAT and more BHP)
     
     

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    Quote Originally Posted by fushion julz View Post
    Procedure for bleeding the cooling system on all cars with header tank on the side of the rad...
    1. Remove bleed screw from top of rad
    2. remove rad cap
    3. heater to full hot, ignition on, engine off
    4. fill rad until coolent flows out of bleed hole with no bubbles
    5. refit bleed screw
    6. top up and refit rad cap

    Job done
    Try to do it on level ground and it won't be necessary to jack the car up
    If it doesn't bleed fully, then either a hose has collapsed or the heater valve is stuck shut or the heater is connected the wrong way round (ie inlet to outlet pipe, etc)
    It is necessary to jack the car up because air gets trapped in the matrix-hence airlock and you not going to get it out of there if you don't jack the car up.The Bimmerforums preferred method of bleeding has been posted up as its the most reliable one that works
     
     

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    cheers guys motor now bleeded and heaters red hot, jacked front end up and it worked a treat thanks for your help
     
     

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    xXxStKxXx (02-12-2009)

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