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General E46 Forum
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Old 12-08-2011, 05:41 AM   #1
zooyorkE46
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325CI overheating please help

Workin on a E46 325Ci thats been overheating i replaced the thermostat replaced the water pump checked the heater core valve i guess you kno the valve tht gives u warm air for your heater but anyway it functioned jus fine and when i fill the tank up with water it gets full but the water dont seem to go any where unless i take the bleed screw out all the way ive tried bleeding the system multiple times. Can anyone give me any suggestions?
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Old 12-08-2011, 07:34 AM   #2
Sansho
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Describe the steps you take to bleed the system ....
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Old 12-08-2011, 08:07 AM   #3
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1. put key in ignition and turn to position II.

2. set fan to lowest speed, and set temp to max (91 degrees).

3. remove bleeder screw. also remove reservoir tank cap.

4. with ignition still in position II, pour coolant/water through reservoir tank until coolant/water spills out of bleeder hole without any bubbles.

5. reinstall bleeder screw and reservoir tank cap.

6. start engine and drive car around till engine reaches operating temp.

7. let engine cool and check coolant level. top off coolant to proper level if necessary.

Last edited by EDawg; 12-08-2011 at 08:10 AM.
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Old 12-08-2011, 08:26 AM   #4
lsteg
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Quote:
Originally Posted by EDawg View Post
1. put key in ignition and turn to position II.

2. set fan to lowest speed, and set temp to max (91 degrees).

3. remove bleeder screw. also remove reservoir tank cap.

4. with ignition still in position II, pour coolant/water through reservoir tank until coolant/water spills out of bleeder hole without any bubbles.

5. reinstall bleeder screw and reservoir tank cap.

6. start engine and drive car around till engine reaches operating temp.

7. let engine cool and check coolant level. top off coolant to proper level if necessary.
if your steps don't match this exactly then you're doing something wrong.
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Old 12-08-2011, 09:27 AM   #5
EDawg
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Originally Posted by BMW-North View Post
Why do you need to drive the car "around"?

I've successfully bled 50+ times and never moved the car from the garage?

Raising the front end and revving the engine has sufficed?

I think most of the probs I read about on here with bleeding coolant is due to folk not waiting till the thermostat is open to ensure the circulation is occuring and then topping off.
driving the car "around" just facilitates the warming up process to get the thermostat to open up. if you want to rev the engine up in your garage/driveway, then by all means, go for it. i just don't like to subject my neighbors to excessive noise, nor do i want to subject the people around me, including myself, to breathing in excessive exhaust fumes.
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Old 12-08-2011, 09:32 AM   #6
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Originally Posted by EDawg View Post
driving the car "around" just facilitates the warming up process to get the thermostat to open up. if you want to rev the engine up in your garage/driveway, then by all means, go for it. i just don't like to subject my neighbors to excessive noise, nor do i want to subject the people around me, including myself, to breathing in excessive exhaust fumes.
rev the car - drive the car around

6 of one, half dozen of the other

...the bottom line is to get the thermostat open.
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Old 12-08-2011, 09:02 AM   #7
zooyorkE46
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What do i do after those steps? and if my radiator dont warm up does that mean its blocked up?
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Old 12-08-2011, 08:20 AM   #8
jasonbimmer
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when your engine over heats, does the radiator appear warm?
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Old 12-08-2011, 08:59 AM   #9
zooyorkE46
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I have my thermostat rigged to b open constantly also
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Old 12-08-2011, 09:09 AM   #10
zooyorkE46
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It seems to take a minute to start heating up it takes like 10-20 mins to get completely hot depending on how the weather is outside
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Old 12-08-2011, 09:25 AM   #11
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Originally Posted by zooyorkE46 View Post
It seems to take a minute to start heating up it takes like 10-20 mins to get completely hot depending on how the weather is outside
I am thinking your thermostat is still stuck shut if the radiator is not getting warm.
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