Is the security light lit on the instrument cluster ? Anti-theft system problem ?
DTC P0131
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the vehicle is first started the powertrain control module (PCM) operates in an Open Loop mode, ignoring the HO2S signal voltage when calculating the air-to-fuel ratio. The PCM supplies the HO2S with a reference, or bias, voltage of about 450 mV. The HO2S generates a voltage within a range of 0- 1,000 mV that fluctuates above and below bias voltage once in Closed Loop. A high HO2S voltage output indicates a rich fuel mixture. A low HO2S voltage output indicates a lean mixture. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature, and to provide an accurate voltage signal. This DTC will set if the HO2S 1 voltage remains below a calibrated amount for an excessive amount of time.
Each HO2S 1 has the following circuits:
• HO2S 1 high signal
• HO2S 1 low reference
• HO2S 1 heater ignition voltage
• HO2S 1 heater low control
• Low reference loop
SOURCE: 2002 Pontiac Grand Prix Thermostat
as you face the engine the thermostat bell is on the right (drivers side) Follow the radiatoe hose. Remove the two bolts and raise the bell still attatched to the hose. the thermostat is there with the rubber seal. You can gently pry the thermostat out with a screwdriver or something similar. Put in new thermostat be sure it is the same as the old one, and then replace or change the seal (be sure it is the smae size and thickness as the old one as I got the wrong size from Napa) Then replace the bell, and tighten, but not over tighten. I hope this helps!
SOURCE: starts and runs 3-5 seconds and shuts down
Sounds like your security system is shutting the car down. You should be able to leave the key on for 15 minutes and it will reset itself. Make sure you are using factory keys, and they are in good condition.
SOURCE: fuel pump location 2001 pontiac grand am
The fuel pump is in the fuel tank.Sit in the car.....turn on the ignition switch to run.....listen very closely to the rear of the car...or have someone kneel down by the back wheel.....you should hear a "prime cycle"......the pump running for 2 or 3 seconds if the key was off for 15 seconds before trying this.If you hear silence you most likely need a fuel pump.Before pulling the tank down....check for power on the gray wire at the fuel tank connector just ahead of the rear axle under the car.Check for power with a test light that will last for 2 to 3 seconds as you turn on the key to run.Power means you really most likely need a pump.No power means you may need a fuse or a fuel pump relay.
SOURCE: Need to know how to replace fuel pump on 2002
You don't need to drop the tank to replace the fuel pump.
Under the carpet in the trunk there is a access cover that you can take off to access the pump. You need a good snap ring pliers to get the snap ring off to release the pump from the tank.
I wish people would have first hand knowledge of the process before they start clicking post and cost a person a lot of money and time for something that isn't needed to be done to complete the job.
SOURCE: 97' Pontiac Gran Prix Won't Stay running
Known GTP problem.
You most likely have a bad fuel pump resistor, which controls 2 speeds of the fuel pump.
To check to see if this is the problem, there is a trick you can do and its very easy to do. Go to the attached link, and bend the tab my finger is pointing at and then plug it back in. If your car starts and runs fine, well we just solved the problem.
Link ->> http://www.boredandstupid.com/relay.jpg
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