1993 300e 2.8L with 82k and in great shape: I've had installed new wiring harness, ovp relay, plugs, and injectors. Car will not start in minor cold weather unless I press on gas first. Sometimes takes 3-4 cranks. Changing gas from premium to midrange didn't work. I'm sick of giving dealer my business: could it be the "cold start solenoid" or simply having a tech change fuel/air mix work???