My fuel pump is gettingno power. I have checked the relay and I am not getting power to the relay in the fusebox
Your vehicle should have a fuel pump reset switch ..It is just a red button ..Owners manual will show you the exact location..The switch is for emergency crash ....
SOURCE: electric fuel pump inertia switch?
where is the fuel pump pressure switch located no 1992 z28 camaro. also there are 3 wires coming out to fuel pump at back of car pink grey brown what do they go to.
SOURCE: 92 Chevy Suburban Electrical Fuel System
I assume the fuel pump fuse is good?
The only time voltage will be sent to the fuel pump will be the first 2 to 3 seconds if the starter is not engaged. You will want to crank the engine over and check for voltage on the load side of the relay, circuit #30 at the relay.
Let me know after you check.
Regards,
SOURCE: 1996 chevy tahoe fuel system
i am having the same problem with my 96 pickup i am getting low voltage to my fuel pump i have traced the wires back to the front the purpel wire is the one with low voltage i replaced fuel pump also fuel relay and still have low voltage
SOURCE: 96 chev 1500 no power to fuel pump. changed the
Be sure that the fuse to the fuel pump is good, and the wiring to the connector at the fuel pump is not damaged and the ground wire is grounded well.
The fuel pump circuit on some applications is controlled by the OPSU (Oil Pressure Sending Unit) and it will shut down the fuel pump if there is not enough engine oil pressure to safely run the engine, and you can tell if the OPSU is controlling the fuel pump circuit in your vehicle because there will be more than just one wire going to the OPSU, and this type of system can prevent the fuel pump from running if the OPSU is faulty.
On all applications the ignition module located inside of the distributor is what generates the signal that is used by the ECM (Engine Control Module) to run the fuel pump, time and fire the fuel injectors, as well as the dwell signal to fire the ignition coil.
That does sound like a malfunction with the ignition module inside of the distributor, and you can remove the ignition module and have it tested for free at most auto part stores.
If you do purchase a new ignition module be sure that it does come with a silicone grease or a die-electric compound because it is a heat sink and the ignition module will burn up without it.
To install the new ignition module first clean out the mounting surface inside of the distributor. Then completely coat the metal contact surface under the ignition module with a thick coat the silicone grease or die-electric compound and do not leave any of the metal contact surface of the ignition module un-coated with the silicone grease or die-electric compound, and be very careful not to over-tighten the ignition module or it will be damaged.
SOURCE: fuel gauge bouncing on 2000 chevy tahoe where is fuel pump relay
I had previously replaced the failing fuel pump on my '98 K2500 when it went out entirely. I was ready to replace my 2000 K3500's fuel gauge as it was acting up.
When I started the engine, the gauge would bounce from the middle to way past full then back. It would also jump sporadically while driving on level ground.
I checked the electrical connections at the tank and made sure the frame ground strap located nearby was making good contact. Nothing changed until I removed the instrument panel and cleaned the connections on the back. The fuel gauge seems to be operating correctly now.
There are videos on YouTube that show how to remove the instrument cluster if in doubt. Mine dash has a pop-in plastic bezel followed by 4 screws to hold the cluster in place. It took about a half hour to inspect & clean the dash connection vs. $250 to replace the pump/sending unit combo. Hope this helps.
Engine Starts:
· Fuel Pump secondary circuit shorted to power
· Fuel pump relay contacts always closed
· Open in fuel pump monitor (FPM) circuit between ECU and connection to POWER TO PUMP circuit
· Heated Exhaust Gas Oxygen (HEGO) sensor shorted to power
· faulty ECU
Engine Does Not Start:
· Open inertia switch or inertia switch circuit
· Open in or between ECU and fuel pump (This includes open in fuel pump brushes/windings)
· faulty ground connection at fuel pump
The easiest way to check this circuit is to go to the fuel pump relay. If the relay clicks when the key is turned to the "RUN" position, then the inertia switch circuit is ok.
The Pink/Black wire starts from the fuel pump relay and goes two directions. One side goes back to the fuel pump. The other side is the fuel pump monitor circuit and goes to pin #8 at the ECU. This wire should only be hot for a second or two when the ignition is turned to the RUN position.
The fuel pump relay receives power on the Black/yellow wire. It comes from a fusible link at the power distribution center. This wire should be hot at all times.
If all the above is working as designed, them you probably have a bad fuel pump.
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