|
|
|
11-26-2012, 04:37 PM | #1 |
New Member
3
Rep 17
Posts |
intermittent overheat
anyone had intermittent overheating problems
my car sometimes overheats only on freeway driving. I watch the temp gauge (through hidden menus) drop to around 80degrees before it climbs quickly and yellow warning appears on idrive screen, I can then turn engine off then back on while coasting and temp returns to normal. This can happen a couple of times on long drives then not happen for a week. At first i thought it was temp sender so i replaced (didnt fix) after speaking to bmw they suggested electronic thermostat so i replaced it and it still overheating. Now i know these water pumps are notorious for failing but when they fail they normally fail for good. Any input would be appreciated as this problem is quiet annoying |
11-26-2012, 07:57 PM | #3 |
Just one more taste...
566
Rep 2,011
Posts |
How often does this happen? Do you see your oil temp rise at all?
__________________
My Build Thread: Jet Black 6MT 128i with MSport
|
Appreciate
0
|
11-26-2012, 07:58 PM | #4 |
Colonel
57
Rep 2,251
Posts |
water pump going out?
__________________
-------------------------------------
BMW 135i/6 Speed/Montego Blue/Formula One Ceramic Tint/JB4 G4/AA Sport Intercooler/19 inch Iconz 880Z(19X8.5 & 19X10)/PSS 225/35 & 265/30/E93 M3 front sway bar/TRW front and rear Control Arms/BMS Drop In Filter/Dinan Exhaust/BlackLines/Upgraded \\\M RSFB |
Appreciate
0
|
11-26-2012, 08:19 PM | #5 |
European Editor
10532
Rep 22,992
Posts |
Could be your water pump. But when you replaced the thermostat... did you bleed the cooling system properly? I think you can turn on the ignition(don't start the engine) put your foot to the floor on the gas pedal for ten secs... you should then hear the water pump start to cycle on and off. You might have some air in the system - so a "burp" might be in order!
The way you described the car over heating on the highway... it almost sounds like how the old e36/e46's would have the same issue when the water pump impeller would spin freely on the shaft. BMW has had a habit of using composite impellers that are simply not as reliable as a metal impeller. Btw... Turner Motorsports has good deals on electric water pumps. So does Tischer and United for OE BMW parts. G.L. Dackel
__________________
|
Appreciate
0
|
11-27-2012, 02:34 AM | #6 |
New Member
3
Rep 17
Posts |
Car is 08 and has 72000kms has BMW coolant and oil and pretty sure I bled system completely oil temp doesn't go above 120degrees car gets driven everyday
And only happened twice since I changed thermostat two weeks ago think I going to have to bite the bullet And do waterpump and just pray it fixes it Last edited by help me; 11-27-2012 at 02:58 PM.. |
Appreciate
0
|
11-27-2012, 03:14 AM | #7 |
Lieutenant
28
Rep 439
Posts
Drives: 2009 BMW 135i
Join Date: Sep 2010
Location: Spangdahlem, Germany
|
Does your temp ever go into the red?
Does your radiator fan kick on? (You should be able to hear it if it overheats) My waterpump just went out and the first sign I got was that the radiator fan turned on 30 seconds after I started the car. That was about 3 minutes before it comletely failed though. Since the water pump is electric, I think it just goes out quick, not slowly. I could be wrong though.
__________________
2009 BSM 135i 6MT
|
Appreciate
0
|
11-27-2012, 03:58 AM | #8 |
Colonel
85
Rep 2,438
Posts |
That is crazy BMW at least could give us water temp gauge.
Like in older e46 there is no overheating bulb/indicator you can not pay attention when temp goes to the top. Its just looks a little scary when I see those posts |
Appreciate
0
|
11-27-2012, 04:02 AM | #9 |
Lieutenant
28
Rep 439
Posts
Drives: 2009 BMW 135i
Join Date: Sep 2010
Location: Spangdahlem, Germany
|
Yup. There is no real warning. Car feels a tad bit weird and then 5 seconds later, yellow temp indicator, a few seconds later, red temp indicator. Its pretty fast since out turbo cars generate more heat.
__________________
2009 BSM 135i 6MT
|
Appreciate
0
|
11-27-2012, 04:10 AM | #10 |
Colonel
85
Rep 2,438
Posts |
I wonder how quick it can damage the engine or burn the head gasket
|
Appreciate
0
|
11-27-2012, 06:20 AM | #11 | |
Lieutenant
28
Rep 439
Posts
Drives: 2009 BMW 135i
Join Date: Sep 2010
Location: Spangdahlem, Germany
|
Quote:
The waterpump is now replaced and I have no codes and nothing is out of the ordinary so hopefully I did not damage anything.
__________________
2009 BSM 135i 6MT
|
|
Appreciate
0
|
11-27-2012, 03:06 PM | #12 |
New Member
3
Rep 17
Posts |
temp will go into red if you dont turn car off and on quick enough
i think were pretty lucky these engines are supposed to be hard to damage if you dont turn off and try to keep going you might be able to hurt something but that would be an effort in itself as the car wont let you drive anyway. Im going to check electrical signals to the water pump and thermostat over the next week just to make sure there is no problem with the computer side of things and i might even remove jb4 as well |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|