The majority of side quests in The Outer Worlds are simple. Speak with an NPC, follow the objectives, done. Make sure when you are attempting a specific quest, that it is selected in your journal. You can only track one quest at a time, so you want to ensure you’re chasing the correct markers.
Happiness Is A Warm Spaceship Quest Guide
For this quest you will have to get new parts for the Radiator Array which helps the groundbreaker cool down. You will have to go to the back bays and get old machinery from there because Junlei wants you to. If you resolved things peacefully with MacRedd then you can get the parts and go back to Junlei.
You will have to ask Junlie about the purpose of the parts you found upon which she will ask you to enter the maintenance shaft and install the new parts in there with her. She also warns you to keep your wapons.
After that you will go back to her and tell her that the radiators are fixed and get your reward which is 18,000 xp, 3,000 Bit Cartridge, Welder’s Goggles and increase in Groundbreaker reputation.