Whenever I come to a stop my car will rock at idle almost all the time, and occasionally while driving my car will stall when my car stalls if I turn it back on as soon as it happens everything is fine but now if I park it after it stalls when I return it will no longer start back up I have to disconnect the battery to get it to work again any thoughts?

 

Maybe a bad RCM ?
You need to give more information to help understand the problem.
Is it an auto or manual? Coupe or Roadster? Year? etc...
Can you explain what rocks at idle means? Does it run rough or does the whole car move back and forth?

https://www.crossfireforum.org/forum...s-repairs.html

 

It is a Roadster 2005 automatic. The whole vehicle moves back and forth at idle. The vehicle is little slow at responsiveness to the gas pedal as well if that helps any and I have Already soldered my bad RCM for my random stalls and not starting at times. That fix the stalls and not starting but did not fix and back and forth motion.

 

I'm not sure what that could be since I have a manual transmission. It sounds like some kind of sensor problem to me. Have you spilled anything on the shifter?
I have a suggestion that might get your post noticed by one of the senior members. Post this again in The Engine, Exhaust, Transmission and Differential section:
https://www.crossfireforum.org/forum/engine-exhaust-transmission-differential/
Hope fully someone who has an automatic or maybe has had the same trouble will see it. Remember to include the info about your car in the post.
Here are a couple of links to posts about auto-transmission troubles:
There's a lot of info on this one: https://www.crossfireforum.org/forum...r-shifter.html
Here's another: https://www.crossfireforum.org/forum...-problems.html
Sorry I couldn't be more help. Good luck!

 

With the hood open and an assistant in the car have them push the throttle peddle down. Does the engine noticeably rock? Your engine mounts could be bad.
If you have some sensor problems then you should be able to find a DTC Diagnostic Trouble Code that will get you going in the right direction. Depending on the scan tool, many of us find the Crossfire will scan as a Mercedes 2002~2004 year SLK 320 if you have a Limited or Base car and a SLK 32 if it is a SRT6.

 

There are no DTC showing at all the only one I had was a P0410 and that went away when I fixed my RCM. I guess my next step is to inspect my engine mounts and I’ll repost in the Engine, Exhaust, and transmission sections. As well to answer your question I do believe I have spill a drink on my shifter before.

 

I just jacked up my car and took a look at the engine mounts and they seem to be in pretty good shape I will get a picture posted of them.

 

I have not spilled anything and I have not had the problem the OP has mentioned but have a question ... could the spillage on the shifter he admits to cause his problem ?

 

Not sure a spillage on the shifter would cause this issue, but a spillage on the shifter can & will cause several issues. Too many electronic gizmos beneath the center console. That's why I don't allow any drinks in my car when driving. On any long trips, wife & I typically have water bottles to drink from with screw-on lids. And she handles the water bottles while I'm driving. If I need a drink, she hands me the water bottle to drink from & then I give it back to her to put the lid back on. Crossfire electronics are quirky enough without me adding to and/or creating any issues.

It will be interesting to see if anybody can help this OP with the source of his problem & solve this issue. Truly a '1st time' failure mode we've haven't discovered on this Forum.

 

dedwards0323, thank you for the explanation ... I learned more today ... this is a great site