Thanks for the advice!

Can I rule out the throttle actuator and wiring harness since the problems almost always go away after the engine is thoroughly warmed up?

I just figure it wouldn't be one of those problems since the symptoms aren't always present. Wouldn't a faulty throttle actuator or wiring harness manifest symptoms 100% of the time?

Thanks again!

__________________

Current:
2014 VW Tiguan SEL 4Motion 43,000 miles.

2016 Hyundai Santa Fe Sport (wife's).

Past:
2006 Jetta TDI 135,970 miles. Sold Nov. '13.
1995 E-320 Special Edition. 220,200 miles. Sold Sept. '07.
1987 190-E 16 valve. 153,000 miles. Sold Feb. '06.
1980 300-D 225,000 miles. Donated to the National Kidney Foundation.
1980 240-D manual, 297,500 miles. Totaled by inattentive driver.