My 245 has just developed a weird symptom. When I start it cold it runs but struggles. The exhaust smells like crap and the the engine just doesn't idle up on its own. If I gas it, it hesitates but eventually reaches normal operating idle but then as I drive it will seem to be fine until I pull into the drive and put her in park. Then the idle bumps up higher than normal. The computer is not pulling up any codes. The only issues, which I believe are not related, is that the speedometer will bounce once in awhile when I hit the brake but only when parked or stopped at a light. The car also zaps me when I get out. I know this is probably a ground but anyways these things have been there for a long time and did not affect the way the car ran. Any ideas? I need my baby to not brake down in the next two weeks because she is my work wagon. Any help is sincerely appreciated.