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running hot, not overheating
- Athos
- Member
- Posts: 62
- Joined: Thu Aug 11, 2016 10:06 pm
running hot, not overheating
Hello All,
i have been having a strange problem and I am looking for help.
My car has been running hot lately, not overheating but when caught in traffic, the needle will the the middle mark and begin to slowly rise upward but not overheat and then return down to the middle mark.
I replaced the water pump, and thermostat thinking that might have been the problem.I took the car on a long drive (6 hrs) and it ran perfectly all the way there. Then after driving for 40 minutes in traffic, I experienced the same symptoms.
I do not appear to have any leaks, and can find no water in the pan. I have also replaced the coolant sensor and several of the hoses.
All the fans appear to function correctly sooo do I just keep replacing parts i.e. the radiator and expansion tank ? Any other things to check?
Thanks in advance
2006 3.0SI Auto
i have been having a strange problem and I am looking for help.
My car has been running hot lately, not overheating but when caught in traffic, the needle will the the middle mark and begin to slowly rise upward but not overheat and then return down to the middle mark.
I replaced the water pump, and thermostat thinking that might have been the problem.I took the car on a long drive (6 hrs) and it ran perfectly all the way there. Then after driving for 40 minutes in traffic, I experienced the same symptoms.
I do not appear to have any leaks, and can find no water in the pan. I have also replaced the coolant sensor and several of the hoses.
All the fans appear to function correctly sooo do I just keep replacing parts i.e. the radiator and expansion tank ? Any other things to check?
Thanks in advance
2006 3.0SI Auto
- Chris_D
- Lifer
- Posts: 6615
- Joined: Thu Apr 21, 2016 11:41 pm
- Location: Mostly Holland. Sometimes UK.
running hot, not overheating
Try and bleed the coolant system, make sure you don't have pockets of air in the system.
I have the opposite problem; mine runs cold (75-85deg C) at motoway speeds, indicating sticking open stat.
I have the opposite problem; mine runs cold (75-85deg C) at motoway speeds, indicating sticking open stat.
E85 3.0i roadie (03) 'Benny'. E93 320d M-Sport Cabrio (11) 'Bob'.
'Always different, always the same.' John Peel on The Fall.
'Always different, always the same.' John Peel on The Fall.
- Athos
- Member
- Posts: 62
- Joined: Thu Aug 11, 2016 10:06 pm
running hot, not overheating
I will give that another shot. I have bled the system like 3 times!
Thanks
J
Thanks
J
- skelters
- Senior Member
- Posts: 2640
- Joined: Thu Jun 14, 2007 11:18 pm
- Location: Greenock, Scotland
running hot, not overheating
Have a read at this thread from last month.....
viewtopic.php?f=2&t=115474&p=1664198&hi ... g#p1664198
viewtopic.php?f=2&t=115474&p=1664198&hi ... g#p1664198
2007 Z4 3.0si Sport. Silver Grey Metallic, Brembo Brakes, HEL Braided Brake Hoses, Machine Monkey Exhaust Tips, Stubby, Piano Black trim, Black Leather, Bilstein B12-Pro-Kit, Michelin Pilot Sport 4 on MV2's. Roof Motor in the Boot!
- ph001
- Lifer
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- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
running hot, not overheating
What bleed procedure did you use? I’m guessing you are aware there is an automated electronic bleed process on the N52.
- Athos
- Member
- Posts: 62
- Joined: Thu Aug 11, 2016 10:06 pm
running hot, not overheating
I read that post and followed the bleeding procedure exactly. I an near certain that I have no air in the system but am having a hell of a time trying to figure out what is causing the problem. It only seems to happen in start stop traffic.
I am going to bleed the system again and try that. Then check for leaks again!
J
I am going to bleed the system again and try that. Then check for leaks again!
J
- skelters
- Senior Member
- Posts: 2640
- Joined: Thu Jun 14, 2007 11:18 pm
- Location: Greenock, Scotland
running hot, not overheating
Any error codes?
2007 Z4 3.0si Sport. Silver Grey Metallic, Brembo Brakes, HEL Braided Brake Hoses, Machine Monkey Exhaust Tips, Stubby, Piano Black trim, Black Leather, Bilstein B12-Pro-Kit, Michelin Pilot Sport 4 on MV2's. Roof Motor in the Boot!
-
- Member
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running hot, not overheating
Usually a sign of a leak or steaming. Run the car up to temp and look under the bonnet whilst running, see if you can smell coolant or see wisps of steam. Plastic reservoir is the common one, also could be that the cap is not sealing properly anymore.
- ph001
- Lifer
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- Location: N. Yorkshire.
running hot, not overheating
‘That post’ is not for an N52.
- Athos
- Member
- Posts: 62
- Joined: Thu Aug 11, 2016 10:06 pm
running hot, not overheating
Understood that it's a different motor, but is the bleeding procedure different for a n52??
I will check for steam leaks , and report back..
J
I will check for steam leaks , and report back..
J
- Ewazix
- Lifer
- Posts: 4721
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- Location: Somerset
running hot, not overheating
The M54 has a traditional mechanical water pump, the N52 facelift motor has an electric water pump that has to be activated with the ignition switched on, but engine OFF to self bleed properly.
Good how-to instructions with pictures can often be found on the Pelican parts site, in your case the e90 instructions which should be the same as your car as they are both N52.
https://www.pelicanparts.com/BMW/techar ... System.htm
2003 2.5 SE, low miles, Sterling Grey, 108's & Eagles, no stubby here! Unmolested.
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2018 Cooper S Countryman
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- ph001
- Lifer
- Posts: 3870
- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
running hot, not overheating
That’s right, with the ignition on you have to fully press the accelerator for 10 secs to start the automated bleed process just like ewazix link above describes.
- Athos
- Member
- Posts: 62
- Joined: Thu Aug 11, 2016 10:06 pm
running hot, not overheating
I followed the proper procedure for the n52, and bled the system 3 times...
The coolant level is fine, and I have yet to find leaks...but will keep checking..
Thanks all
Ps no error codes...!
The coolant level is fine, and I have yet to find leaks...but will keep checking..
Thanks all
Ps no error codes...!
- kis
- Lifer
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- Location: Surrey / West Sussex Boarder
running hot, not overheating
Same thing with mine, but that was coolant leak (so easy fix). Good luck sorting
My E85 Z4 3.0i SMG
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
- road warrior
- Senior Member
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running hot, not overheating
allows himself a little gloat that he has a " proper " water pump..
If you ever think I'm off my rocker.. Just put me back in it and walk away... It's the kindest thing
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.