Yo Duff,
Yw!.
Now she is a better-half for sure!
Check Engine Light (CEL) comes on when the electronic engine control system is not working properly. The check engine warning indicator comes on briefly when the ignition switch lock cylinder is turned to ON, and should turn off when the engine starts. If the check engine warning indicator does not come on when the ignition switch lock cylinder is turned to ON or if it comes on while the vehicle is moving, the system is malfunctioning.
If the CEL does not light up at all when starting it; then suspect that bulb is burnt-out or loose, socket was damaged by PO or shop, etc. or someone removed it.
Ask her if when idling, is it rough? Any black , Blue/Gray, or White/Gray Smoke exhaust smoke?
With a tachometer, what does it read in rpm and does needle flutter?
Does letting engine warm up to normal operating temperature (between o and r on the gauge) help smooth idle or keep it running when shifting to first?
Later...