C200 W203 HESITATION AND ENGINE SHAKE WHEN WARM
#1
C200 W203 HESITATION AND ENGINE SHAKE WHEN WARM
Hello, hope im in the right place. 2003 C200 AUTO. 113k on the clock. I have had for about 6 months, car was fine apart from electrical gauges freezing momentarily now n then. Recently i have had choppy acceleration like if there was a hole in the exhaust, and engine shake, but it only does this after about 20mins of driving when the temperature warms up, if i turn engine off and wait till it cools down then i start up again the car is back to normal again... Until it warms up again then i have the same issue. There is no engine management light or malfunction listed. I recently used all off wynnes cleaning products as the car was shaking and cutting out when i pressed the breaks or accelerated from stand still, i should have mentioned this first but since i used wynnes it no longer does that but it has this problem instead. Please let me know if im in the wrong place. Thanks
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benz-w203 (07-10-2022)
#2
Member
Hmmm, wonder if you have a crankshaft position sensor (CPS) issue.
A failing cps often only acts up when the car is warm. Often no codes either. There are quite a few threads on the site about cps issues—run a search and see if the diagnosis matches your problem.
5
A failing cps often only acts up when the car is warm. Often no codes either. There are quite a few threads on the site about cps issues—run a search and see if the diagnosis matches your problem.
5
#3
#4
Member
While it’s true that CPS problem can cause a quit/crank no start, it can also cause drivability problems. See: http://www.mercedesmedic.com/crank-s...sition-sensor/. CPS problems are also frequently temperature sensitive.
I have no idea what the Wynn “snake oil” did to your car. Did you do an oil system clean/flush? Fuel system treatment? Intake cleaner? Who knows...I Seafoamed the intake on a 1992 190e 2.6 once. It quit and then ran badly until I removed and cleaned the idle air control valve. Stayed away from junk in a can since then...
Key thing for me is that your problem only occurs after driving 20 minutes.
Good luck,
5
I have no idea what the Wynn “snake oil” did to your car. Did you do an oil system clean/flush? Fuel system treatment? Intake cleaner? Who knows...I Seafoamed the intake on a 1992 190e 2.6 once. It quit and then ran badly until I removed and cleaned the idle air control valve. Stayed away from junk in a can since then...
Key thing for me is that your problem only occurs after driving 20 minutes.
Good luck,
5
#5
While it’s true that CPS problem can cause a quit/crank no start, it can also cause drivability problems. See: http://www.mercedesmedic.com/crank-s...sition-sensor/. CPS problems are also frequently temperature sensitive.
I have no idea what the Wynn “snake oil” did to your car. Did you do an oil system clean/flush? Fuel system treatment? Intake cleaner? Who knows...I Seafoamed the intake on a 1992 190e 2.6 once. It quit and then ran badly until I removed and cleaned the idle air control valve. Stayed away from junk in a can since then...
Key thing for me is that your problem only occurs after driving 20 minutes.
Good luck,
5
I have no idea what the Wynn “snake oil” did to your car. Did you do an oil system clean/flush? Fuel system treatment? Intake cleaner? Who knows...I Seafoamed the intake on a 1992 190e 2.6 once. It quit and then ran badly until I removed and cleaned the idle air control valve. Stayed away from junk in a can since then...
Key thing for me is that your problem only occurs after driving 20 minutes.
Good luck,
5
#6
Same problem
[QUOTE=nosleep09 no;7848446]Hello, hope im in the right place. 2003 C200 AUTO. 113k on the clock. I have had for about 6 months, car was fine apart from electrical gauges freezing momentarily now n then. Recently i have had choppy acceleration like if there was a hole in the exhaust, and engine shake, but it only does this after about 20mins of driving when the temperature warms up, if i turn engine off and wait till it cools down then i start up again the car is back to normal again... Until it warms up again then i have the same issue. There is no engine management light or malfunction listed.
Hello friend, I have the same problem. Would you tell me how you solve the problem???
Hello friend, I have the same problem. Would you tell me how you solve the problem???