Rough starting when cold high. High idle between shifts 2 to 3 Grand using at least twice as much gas than it used to replace the idle air control replace the throttle body sensor replace the thermostat sensor could two different cans of cleaner to check for leaks in my lines replace the catalytic converters replace the O2 sensors front and back Banks still have the problem getting worse as everyday goes by anything please would help have to pass smog and will not pass got to check engine light on
