Car runs very jerky when cold - 2005 Mercedes-Benz C-Class

What kind of car? Without much detail it's really hard to diagnose this. Make, Model, Year, and a description of when it's jerky would help (braking, accelerating, coasting, etc.) Are there any other symptoms/sounds related to the jerkyness? Could be anything from a bad spark plug to a bad transmission to a out of balance tire.

HOT/WARM START ISSUE

Its a hot start issue.

Can be related to low fuel pressure or problem with crank sensor.

Also it can be weak battery or starter.

But possibilities are to be inspected to confirm what exactly it is.------

To troubleshoot and confirm the issue,i suggest you refer few solved help links with similar types of problem like yours:------

Click the link below:------

1991 Toyota Trecel: Engine Starts fine but dies when gets Warm?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

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1994 Toyota Pickup: Starts fine but dies in few seconds?

http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

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1995 Lexus LS400: Running Hot?

http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html

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2002 Toyota Camry: Puff of Blue or White Smoke while Starting?

http://whatisbyme.blogspot.in/2012/05/2002-toyota-camry-puff-of-blue-or-white.html

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Multiple problems on car: Car runs hot, A/C blows hot and car starts surging?

http://schematicsdiagram.blogspot.in/2012/04/multiple-problems-on-car-car-runs-hotac.html

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Delay starting on Toyota Prius?

http://schematicsdiagram.blogspot.in/2012/02/delay-starting-on-toyota-prius.html

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Honda car will not start intermittently?

http://technoanswers.blogspot.in/2012/02/honda-car-will-not-start-intermittently.html

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Vehicle Starts, Runs and Loses Power

http://whoisbyme.blogspot.in/2012/07/vehicle-startsruns-and-loses-power.html

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Intermittent starting issues on Volvo 760?

http://schematicsdiagram.blogspot.in/2012/02/intermittent-starting-issues-on-volvo.html

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Car starts and cuts off immediately?

http://repairhelpcenter.blogspot.com/2012/01/car-starts-and-cuts-off-immediately.html

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Car won't start when cold?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-when-cold.html

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These details will help.

Thanks.

all power steering fluid is the same actually us can use transmission fluid if u want
now being as you had to add fluid i would assume u have a leak some where in the system
you may be low on fluid also there probably air in system (when u have a leak it also allows air into system especially when you run low on fluid)
also if anyone ever put stop leak in system stop leak is a lot thicker oil and will take longer to heat up and thin out in cold weather to allow easy turning
first check for leaks repair if needed
if no leaks are found drain system add fresh power steering fluid
if that doesn't fix problem you have a bad power steering pump replace pump

Well for one, make sure you speed up slowly, dont HIT the accelerator. It may also be problems with your fuel filter. After you are stoped fuel stops running through the fuel pump/filter and then when you start going its starts to run through again and it cant keep up so it gets bubbles in it and doesnt move throught the filter easily hence the jerky accelerating. Good Luck

I would try replacing the fuel filter

car may need some spark plugs wirs

fuel air or spark.. dead miss one one or 2wo cylinders indicated ..check plugs /wires / injectors timing and vacuum leaks ...good luck

you need to replace the coolant temperature sensor. It tells the computer that your car needs a high idle. As far as your running, you got some water displaced in your system. Change out the fuel filter, and pour a can of "Seafoam" in the tank. It will take a few miles, but that should fix your problem.

Same problem for me. The car would idle at about 2500 when started from cold and about 3 miles on would not idle at all, resulting in the revs dropping off when changing gear or stopping. Also rather jerky in top gear unless thrashed - numerous trips to the garage for air idle valve, injectors etc. but still a problem! Have just found out that GVs are a bit prone to carbon build up in the throttle body - mine was almost blocked - it now feels like a different car.

This is a classic fuel distribution distributor issue, clean the throttle plate, you may also have to adjust the fuel trim.