Garyfox78 Posted March 11, 2015 Report Share Posted March 11, 2015 Hi, newbie here. Would anybody be up for sharing their knowledge on a chrysler 300c 5.7 hemi that runs rough when warming up but fine when first started and fine when engine is Warm at speeds over 40mph. Just changed out all sparkplugs. no change.Thanks Quote Link to comment Share on other sites More sharing options...
Udtrev Posted April 5, 2015 Report Share Posted April 5, 2015 Hi and welcome Have you changed the leads as well as the plugs ? Secondly have you been able to read the codes from the OBD system ? Regards Trev Quote Link to comment Share on other sites More sharing options...
Garyfox78 Posted April 8, 2015 Author Report Share Posted April 8, 2015 Hey, thanks for the reply. No not changed the wires just the plugs. Without getting a code I'm a little wary about just throwing money and parts and still not curing the problem. Been looking around the forums and torque converter rumbles seem to be a common problem with similar symptoms. Are the sparkplug wires the same thing as coil packs? They can be ohm tested to see if faulty, correct? Thanks Gary Quote Link to comment Share on other sites More sharing options...
Garyfox78 Posted April 8, 2015 Author Report Share Posted April 8, 2015 its been plugged into two different computers. No codes. May have a slight transmission fluid leak. Could this be linked?????? Quote Link to comment Share on other sites More sharing options...
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