Gl320 stalling in very cold weather only


First of all I have replaced the air filters , fuel filter around 15000 miles ago..
This is the problem:
When the outside temperature is real cold around -20c the car will sometimes just cut as we are comming to a stop or at idle but fires right up .No mater how hot the engine is It happend LAst week when we were low on fuel . I refilled and the problem was still there.
There are no codes . From my research on the board can this be egr related?
Any leads would be great.
Thanks for your help
Erick
First of all I have replaced the air filters , fuel filter around 15000 miles ago..
This is the problem:
When the outside temperature is real cold around -20c the car will sometimes just cut as we are comming to a stop or at idle but fires right up .No mater how hot the engine is It happend LAst week when we were low on fuel . I refilled and the problem was still there.
There are no codes . From my research on the board can this be egr related?
Any leads would be great.
Thanks for your help
Erick

search the forum - there were a few folks like you with problems in cold weather.
I would also try to rev the motor to redline when under load. If you have a dirty filter often you will find that you can't reach redline I the taller gears (4th and higher)
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cleared the codes last week.
the car just stalled on my wife on her way to work she want to sell the car
I scaned it tonight and this is what I got
BTW I ordered a new filter today dut did not install it
Thanks for your help
The Best of Mercedes & AMG
IMO it is time for a new ecu. I do not know if on the gl a new one needs to be coded to the vehicle. If it does- this needs to be done at the dealer.
This also might happen of you battery is on its way out. I would swap the battery before swapping the cdi control unit. Given yours is a cdi 320 the battery if still the factory one is due anyway.
Last edited by alx; Feb 5, 2013 at 10:39 PM.


Since all this only happens when cold
Can the ecu fault come from
1-dirty egr
2-bad seal at turbo inlet ( found oil there did not change the part yet since it is to cold out)
3-intercooler piping seals?
4-low battery when cold
Thanks for your help
A dirty egr will not throw those codes. At least I have never seen it.
Intercooler seals are irrelevant and will not result in those codes either.
My bet is a battery going bad and if not that- a cdi control unit.


My plan if action will be
1- change filter
2- do a load test on the battery when cold with seat Heater / heater high radio etc..
Erick marciano


This morning was real cold . Before I started the car voltage was 11.7 v
As it cranked it went down to 9-10 till started than 13.3
As I was driving around 13.3-13.7
Than when I came to a light if was dropping all the way to 12v than it stalled
Re started and went back up to 13.3
As I rev it goes up to 13.3-13-7
Got to work after a15 min highway trip and as I was existing the volts were going down to 12 and the car almost staled.
When I turned off the car and put the key on engine off and Batt was reading 12.1 v
What do you think
Thanks again
Erick




With computer controlled systems a bad battery can show up as all sorts of weird issues.
Have the battery tested, and replaced if needed then chase the other gremlins.




The battery also acts as a filter for the electrical system and if it is bad you will have more spikes and dips which can cause glitches in computers.


Changed battery ,fuel and air filter ( air filter was so dirty i changed it 12000 mi ago), reset filter with star. Have to wait form a real cold night to see if it made a difference.
Bty where is the egr ? Got the gasket and oring tonclean it.
Thanks
Erick







