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Is there a fuel pump relay or sensor for the fuel pump

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Not sure what engine you have but on a 5.7 its on the right side of the firewall, on the relay block. If you need a Picture then let me know and I will send you one.

Posted on Aug 01, 2009

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I have 2008 GMC sierra 5.3 L with a new fuel pump. And no power to the pump. Any ideas where to look?


Fuel Pump Flow Control Module (FPCM) - LMF
The fuel pump flow control module (FPCM) is a serviceable GMLAN module. The FPCM receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The FPCM sends a 25 KHZ PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal. Maximum current supplied to the fuel pump is 15 amps. A liquid fuel pressure sensor provides fuel pressure feedback to the FPCM.
Electronic Returnless Fuel System (ERFS) - LMF
The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel from the tank to the fuel rails. It functions as an electronic replacement for a traditional, mechanical fuel pressure regulator. A pressure vent valve within the fuel tank provides an added measure of fuel pump flow control module (FPCM). Desired fuel pressure is commanded by the engine control module (ECM), and transmitted to the FPCM via a GMLAN serial data message. A liquid fuel pressure sensor provides the feedback the FPCM requires for Closed Loop fuel pressure control.

Fuel Pump Flow Control Module (Gas except LU3/LMG/LY6/LC9)
Mounted to the rear frame, near the spare tire mount
Wheels/Vehicle Underbody Component Views
Component Connector End Views
Fuel Pump Relay - Secondary (Gas with LY6)
On the fuse block - underhood bracket

DTC P0191: Fuel Rail Pressure (FRP) Sensor Performance
DTC P0192: Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage
DTC P0193: Fuel Rail Pressure (FRP) Sensor Circuit High Voltage
DTC P0230: Fuel Pump Relay Control Circuit
The engine control module (ECM) sends the fuel enable signal to the fuel pump control module (FPCM). The control module monitors the voltage on the fuel pump relay control circuit. If the control module detects an incorrect voltage on the fuel pump relay control circuit, a fuel pump relay control DTC sets.
The control module monitors the voltage on the fuel pump relay control circuit. If the control module detects an incorrect voltage on the fuel pump relay control circuit, a fuel pump relay control DTC sets.
DTC P0231: Fuel Pump Control Circuit Low Voltage
DTC P0232: Fuel Pump Control Circuit High Voltage
DTC P023F: Fuel Pump Control Circuit
DTC P025A: Fuel Pump Control Module Enable Circuit

Your best bet , take it to a qualified repair shop , dealer .

Mar 25, 2017 | GMC Cars & Trucks

2 Answers

I have a 2002 Pontiac Grand Am I started it put it in gear and it died now I have no power to the fuel pump relay or to the injectors if I jump the fuel pump relay I get 55 pounds of pressure


Does it have spark ? Crankshaft position sensor . If the PCM doesn't recive an input from the crankshaft position sensor it will not turn on the fuel pump relay ! GM Fuel Pump Relay Testing

Aug 11, 2016 | Pontiac Cars & Trucks

1 Answer

Where is the knock sensor on a Kia Sedona 2.9 diesel, 2004 LA


Hi,
Here is the location of the "Knock Sensor" you requested, I hope it helps you. It is Number 17. for future reference here is the list of the others
1 = Camshaft position sensor (CMP)
2 = Crankshaft position sensor (CKP)
3 = Engine Control relay (EC) -engine bay fusebox/relay plate 1
4 = Engine Coolant temperature sensor (ECT)
5 = Exhaust gas recirculation valve actuator (EGR)
6 = Fuel Filter
7 = Fuel Filter Heater - in fuel filter housing
8 = Fuel Flow control valve - on high pressure fuel pump
9 = Fuel Rail pressure sensor(FRP)
10 = Fuel Temperature sensor - on high pressure fuel pump
11 = Glow Plugs
12 = Glow Plug Relay 1 - engine bay fuse box/relay plate 2
13 = Glow Plug relay 2 - engine bay fuse box/relay plate 2
14 = High Pressure fuel pump
15 = Injectors
16 = Intake air temperature sensor (IAT) - in MAF sensor
17 = Knock Sensor (KS)
18 = Mass Air Flow sensor (MAF)

25399765-f5d0u4e2gjrctbiof2rrhyew-2-0.jpg

Feb 04, 2015 | 2004 Kia Sedona

1 Answer

1994 Ford Ranger 4.0 cranks runs about 1 to 1 1/2 minute and cuts off.


There are 2 relays in the relay box that could cause this problem the EEC relay and the FUEL pump relay the best test for EEC relay back probe the throttle position sensor for the 5 volts reference signal run engine and watch to see if you lose this voltage. and fuel pump relay install a fuel pressure gauge to fuel rail service port and check to see if pressure drops to zero.

Mar 22, 2014 | Cars & Trucks

1 Answer

1997 Toyota Avalon fuel pump won't turn on


check for power to the pump and check the earth connection for the pump. Check if you have a fuel pressure sensor in the fuel manifold and if you have check that it is operational and energising the relay from the ECM

Mar 02, 2014 | Toyota Avalon Cars & Trucks

1 Answer

Fuel pump relay diagrams


auto shutoff relay controls both fuel and fire..the parts store can tell you for sure..

Jan 05, 2014 | Cars & Trucks

2 Answers

1997 dodge ram won't start. My fuel pump does not run and coil won't spark. Iv'e checked fuses and relays and they look fine. Could a bad fuel pump cause the asd to kill power to the coil?


First check any ignition/fuel related fuses. Check to make sure you have 12 volts coming into the pump and coil. If nothing to the fuel pump replace the fuel pump relay - if you do have power to the fuel pump then replace the pump. If nothing is coming to the coil it is either an ignition relay or a wiring issue. If you have 12 volts to the coil but no spark then replace the coil.
Also the fuel pump/relay would not kill the coil.

Jan 21, 2010 | 1997 Dodge Ram 1500 Club Cab

1 Answer

Engine shuts down right after starting


Have you checked your fuel pump pressure since you changed your fuel pump? And I guess you changed your fuel pump relay since you said you changed every relay. What about your ASD relay (Auto shutdown Relay)? Your fuel pump pressure at idle no load should be 35-45 if it stays running that long. That is for a 5.9 engine, not sure what you have. Here are some of the suggestions:
STARTS BUT STALLS:
Check coolant temperature sensor
Check crankshaft position sensor
Check TPS and connector (if applicable)
Check ignition and sensor wires for proper connection
Check fuel injectors


Aug 04, 2009 | 1994 Dodge Ram

1 Answer

Looking for the fuel pump relay or sensor


The Fuel pump relay is part of the EFI main relay and can not be replaced separately. The EFI main relay is located behind the dash, left of the steering wheel.

gl G

May 10, 2009 | 1991 Honda Accord

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