190e 1986 Engine Miss
 

Hi All, I have developed a intermitent engine miss on my beloved 1986 190e 2.3 8v The miss is most pronounced at idle in drive whether the engine is hot or cold at highway speeds it is either non-existent or hidden by the higher rpms. Last year I replaced the distributor cap and rotor and plugs. Any ideas ?
How can I test the plug wires I think one might be going bad and causing the problem ?
Would the miss cause my cruise control to cut out for a second when going over bridge expansion joints or is that a separate issue ?