Overheating issue
Thread Starter
Senior Member
Joined: Oct 2004
Posts: 308
Likes: 0
From: Honolulu, Hawaii
2001 E55, 2002 ML55, 2002 SL500, 2003 CLK55
Overheating issue
This is happening to my V8 SL500 but thought I'd have more responses here and a buddy of mine is having a similar issue with his E430.
In stop and go traffic, both our cars will start to overheat exceeding the 100' point.
Both our cars have had the following changed:
1. Thermostat
2. Fan clutch
3. Coolant
4. Coolant cap
And both of our electric fans do come on.
Any ideas?
Thanks!
In stop and go traffic, both our cars will start to overheat exceeding the 100' point.
Both our cars have had the following changed:
1. Thermostat
2. Fan clutch
3. Coolant
4. Coolant cap
And both of our electric fans do come on.
Any ideas?
Thanks!
Thread Starter
Senior Member
Joined: Oct 2004
Posts: 308
Likes: 0
From: Honolulu, Hawaii
2001 E55, 2002 ML55, 2002 SL500, 2003 CLK55
We're old men!
I haven't flushed system out but correct coolant has been used and less than a few years old.
Senior Member
Joined: Apr 2006
Posts: 463
Likes: 8
From: Long Island, NY
01 E320
I had the same problem in a 1999 Jeep Grand Cherokee that a I used to own and it turned out to be a bad electric fan. The fan would come on and it appeared to work ok but it turned out that the fan speed was degraded. You could barely feel the air moving and it wasn't effective moving the heat from the radiator. Driving at normal speed, the wind blowing through the radiator moved the heat out but in traffic I would overheat. When I replaced the fan the difference was obvious. You can hear and feel the new fan was way more powerful. Had the car 4 more years and it never ran hot.
Are you actually overheating or just moving slightly over 100?
Are you actually overheating or just moving slightly over 100?
Last edited by 01BlackE320; Dec 12, 2016 at 10:07 PM.
Thread Starter
Senior Member
Joined: Oct 2004
Posts: 308
Likes: 0
From: Honolulu, Hawaii
2001 E55, 2002 ML55, 2002 SL500, 2003 CLK55
I had the same problem in a 1999 Jeep Grand Cherokee that a I used to own and it turned out to be a bad electric fan. The fan would come on and it appeared to work ok but it turned out that the fan speed was degraded. You could barely feel the air moving and it wasn't effective moving the heat from the radiator. Driving at normal speed, the wind blowing through the radiator moved the heat out but in traffic I would overheat. When I replaced the fan the difference was obvious. You can hear and feel the new fan was way more powerful. Had the car 4 more years and it never ran hot.
Are you actually overheating or just moving slightly over 100?
Are you actually overheating or just moving slightly over 100?
Thanks for the advice. I'll check the fans.
