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The Vault - Fallout Wiki
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Solve the Gecko powerplant problem.
Fo2 Reactor Core quest img.png
Quest data
LocationVault City/Gecko
Given ByJoanne Lynette/Harold
Reward4000 XP
Vault City citizenship
Related quests
leads to:
Repair the powerplant.
Optimize the powerplant.

Solve the Gecko powerplant problem is a side quest in Fallout 2.


The nuclear reactor in Gecko is the source of much friction between that community and Vault City. The reactor is damaged, and is putting out a considerable spill of radioactive coolant into the groundwater in the region. People in Vault City are becoming ill due to this.

Both communities want the pollution stopped, but for different reasons. Lynette, First Citizen of Vault City, wants the pollution stopped because it's sickening her citizens. Harold, in Gecko, wants the pollution stopped because he knows, if it continues, it's only a matter of time before Vault City launches a military strike and kills off the ghoul population of Gecko.



You can blow up the reactor either by shutting off the coolant yourself, or conning one of the reactor's tenders to do it for you. The Coolant Report in Harold's desk is enough to get them to shut down the coolant system for you. The reactor melts down, and the problem is solved. The downside is now you are vilified in Gecko, and you've essentially destroyed the lives of dozens of peaceful ghouls, and now Lynette will not let you back into Vault City. She belives that the destruction of the plant will cause mass contamination and has the guards throw you out.


This approach takes a little more effort, but earns you both gratitude and more experience points than frying the reactor. After asking Harold what his job is, he tells you that the reactor has a broken part. The Hydroelectric Magnetosphere Regulator failed, and that's why the plant is pumping out radioactive coolant. The part needs to be replaced, but there's only one source: Vault City.

You may think that, with a solution in hand, Lynette would be happy to hand over the part and put the whole matter behind her. You would be wrong. Lynette will do absolutely nothing to help Gecko, even if it means helping her city in the process. Bringing up the idea can very easily get you banned from Vault City for good.

Instead, talk to Senior Councilmember McClure, in the large conference room nearby. He'll see the wisdom in repairing the plant, and send word to Randall, the Chief Amenities Officer in, as expected, the Amenities Office, to have the part ready. Fetch the part from Randall and return to Gecko.

Once inside the reactor control room, you have two options. You can make the run through the reactor pit room yourself, taking some damage and gaining some radiation, or you can reprogram the maintenance robot, an aging and cantankerous Mister Handy, to do the job. The problem with the robot is that its logic circuits have long since gone to that big computer in the sky. You need to map out its path, using machines as waypoints, before you can get it to install the replacement part. With the installation of a functioning Hydroelectric Magnetosphere Regulator, the plant runs clean again, and the radiation threat is over.

In order to fix or fry the plant with the use of the robot you must put in the following commands, in the reactor terminal, for the robot to work. (Incidentally, the order of commands is the same as the reverse order of the last 5 planets in the Solar System, before Pluto was declassified as a planet.)

1. Amplify Plutonium-Gamma Shield

2. Deharmonize Neptunium Impeller

3. Calibrate Uranium-Rod Driver

4. Set Voltage on Saturn-Class Capacitor

5. Test Jupiter Wave Complier

6. Install Hydroelectric Magnetosphere Regulator to save the plant or Turn Cooling Valve Off

It may sound very complicated, but if you place the commands in the correct order and hit Execute Commands you can just sit back and watch the robot do all the work—or if you choose to demolish the plant, RUN!

Repairing the plant eases the tension between Gecko and Vault City, and unlocks another quest: to Optimize the powerplant.


Whichever way you dealt with the problem, Gecko's reactor is no longer a threat.

If you blew up the reactor, you get 2,500 experience points (with a 550-point bonus if you braved the reactor pit and closed the coolant valve yourself, or if you convinced Hank to do it for you). However, talking to ghouls in Gecko will cause them to attack you, and the entire community will despise you.

However, if you repaired the reactor, you earn a handsome experience point reward. Doing the repair yourself earns you 4,000 experience points, having Festus do the job earns you 4,250 points, and using the robot to do the repair earns you 4,500 experience points.

Arroyo · Broken Hills · Den
ArroyoFinish Temple of Trials · Kill the evil plants that infest Hakunin's garden. · Obtain flint to have Mynoc sharpen your spear. · Fix the well for Feargus · Rescue Nagor's dog, Smoke, from the wilds. · Retrieve the GECK for Arroyo. · Find Vic the Trader. · Stop the Enclave
Broken HillsFix the mine's air purifier. · Find the missing people for Marcus. · Beat Francis at armwrestling. · Break Manson and Franc out of prison.Blow up the mine's air purifier. · Divert more electrical power to Eric's home.
DenSabotage Becky's still. · Get car part for Smitty. · Return Anna's locket. · Get book from Derek.Collect money from Fred. ·Deliver a meal to Smitty for Mom. · Lara wants to know what is being guarded in the church.Get permission from Metzger for gang war.Find weakness in Tyler's gang guarding the church.Help Lara attack Tyler's gang. · Listen to Stacy's kitty story
Gecko · Klamath · Modoc · Navarro
GeckoSolve the Gecko powerplant problem.Optimize the powerplant. · Get super repair kit for Skeeter. · Get 3-step plasma transformer for Skeeter. · Find Woody the ghoul for Percy. Try the Den.
KlamathRefuel the still. · Rescue Smiley the Trapper. · Guard the brahmin. · Rustle the brahmin. · Kill the rat god. · Rescue Torr.
ModocSomething strange is happening at the farm northeast of Modoc. Investigate and report back to Jo.Deliver Slag message to Jo in Modoc.Jo is suspecious of the Slags. Find out about the dead bodies at the Ghost Farm and find out what happened to Karl.Go to the Den and tell Karl it's alright to come back home. · Cornelius has lost his gold pocket watch. Find it and return it to him. · Farrel wants you to find Cornelius's gold pocket watch. Find it and return it to Farrel. · Jonny is missing. Find him and bring him home to Balthas.Jonny's in the Slag caves. Find a way to get Jonny back home to Balthas. · Farrel has a rodent problem in his garden. Remove the infestation.
NavarroDeal with the deathclaw. · Fix K9. · Retrieve the FOB from the base Commander.
New California Republic · New Reno · Redding
NCRRetrive Parts/Gain Access to Vault 15. · "Take care of Officer Jack" for Mira./Stop officer Jack from blowing up the power plant · Complete brahmin drive. · Kill Hubologist in NCR for Merk.Retrive papers from Dr Henry. · Test mutagenic serum on a super-mutant. Try Broken Hills. · Eliminate Mr. Bishop. · Deliver Westin's holodisk to Lynette in Vault City. · Get the map from the NCR Rangers, for Vortis the slaver. · Free the slaves in the slave pen, for the Rangers. · Deliver Hubologist's field report to AHS-9 in San Francisco. · Stop brahmin raids
New RenoRecover your stolen car. · Find some endorphin blockers to make a cure for Jet. · Bust up Wright's still beneath the train station. · Deliver ten Cat's Paw magazines to Miss Kitty. · Deliver a laser pistol to Eldridge.
Made Man quests:
Bishops: Assassinate Westin in NCR without making it look like a murder.Murder Carlson in NCR.
Mordinos: Deliver Big Jesus's package to Ramirez at the Stables.Collect tribute from the Corsican Brothers.Assassinate Boss Salvatore for Big Jesus Mordino.
Salvatores: Track down Pretty Boy Lloyd, recover the stolen money, and make an… example of him.Go visit Renesco the Rocketman and collect Mr. Salvatore's tribute of $1000.Help guard a secret transaction taking place in the desert.
Wrights: Find out who was responsible for Richard Wright's overdose. (Suspect: Jagged Jimmy J, Suspect: Jules, Suspect: Lil' Jesus Mordino, Suspect: Renesco) → Find a way into the Sierra Army Base.
ReddingEvict the widowFind out who cut the whore.Break up the bar brawl.Kill Frog Morton. · Find the excavator chip · Clear Wanamingo Mine · Golden Trail
San Francisco · Vault 13 · Vault 15 · Vault City
San FranciscoThe tanker needs fuel. · The navigation computer needs the NavComp part to work. · You need to use a FOB to access the navigation computer. · Kill the Shi Emperor. · The Hubologists need plans for a vertibird from Navarro. · Steal the vertibird plans from the Shi. · The Hubologists need fuel for their spaceship. · Kill Badger so the tanker vagrants will embrace the Hub. · Kill the AHS-9. · The Shi need plans for a vertibird from Navarro. · Steal the vertibird plans from the Hubologists. · Find Badger's girlfriend in the hold below the ship. · The Dragon wants you to take out Lo Pan - hand to hand. · Lo Pan wants you to take out the Dragon - hand to hand, if possible. · Get Chip's spleen. · Get some hardened power armor from Crockett. · Get the vertibird plans for the Brotherhood of Steel.
Vault 13Fix the Vault 13 computer. · Talk to Goris.
Vault 15Rescue ChrissyKill DarionComplete Deal with NCR. · Give Spy Holodisk to authority in NCR.
Vault CityGet a plow for Mr. Smith. · Deliver Moore's briefcase to Mr. Bishop in New Reno. · Deliver a sample of jet to Dr. Troy. · Solve the Gecko powerplant problem. · Deliver Lynette's holodisk to Westin in NCR. · Rescue Amanda's husband, Joshua. · Deliver beer and booze (10 each) to Lydia. · Deliver pliers (tools) and a wrench to Valerie. · Scout the eight sectors around Gecko and return to Stark.Enter NCR and return to Stark. · Find Mr. Nixon · Gain combat implants
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