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I have no power to the fuel pump 96 1.5 efi charade is there an in line fuse or relay

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First understand that the fuel pump is only powered during engine cranking, not just by leaving the key on, The fuel pump has a relay under the hood.

Posted on Apr 21, 2017

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I have a 95 lexus that wont start now but i checked for fuelpump relay and there is not one were it shows should be i can start with starting fluid so my fuel pump is not coming on


Number 3 pin @relay sends power to the fuel pump
(green wire), pin 2 (green/red gets grounded by the fuel injection power train computer, pins 1 AND 4 GET POWER THROUGH THE CIRCUIT OPENING relay, and EFI relay. Fuses in the circuit are, 10 amp fuse marked IGN and 20 amp fuse marked EFI. God-Bless ! this is for a 95 lexus LS400,

Oct 31, 2016 | Lexus Cars & Trucks

1 Answer

1996 Lexus 400 where fuel reset


To answer your question specifically it would be no. There
is no inertia switch that feeds the fuel pump that can be turned off or reset . The engine control computer turns on a series of two different relays to control power to the fuel pump. When in the start position the circuit opening relay and the fuel pump relay or both energize causing the fuel pump to run at full pressure or fast speed. From there the engine control computer determines which demand is on the fuel pump and either turns off the fuel pump relay and leaves
the circuit opening relay on to supply power through a resistor to slow the pump down for less demand. The EFI main relay is the main supply relay to both of these sub relays. The fuel pump is powered up ultimately by the 20 amp EFI number one fuse. All of these components are located in the fuse box under the hood. If the circuit opening relay is not working it's powered up by the 10 amp
ignition fuse inside the vehicle. It's unlikely it is the 10 amp ignition fuse because that powers up a lot of other things also.

May 16, 2015 | 1996 Lexus LS 400

2 Answers

96 corolla not getting fuel, have spark, new fuel pump, fuses and efi relay good, have discoved that direct power to FP at the dlc will start and run but dies when disconnected, does that mean the circuit...


it should have power always if circuit opens I would think it would shut off like turning the key off to stop running good luck hope this helps

Mar 03, 2015 | Cars & Trucks

1 Answer

Have fuel delivery problems on 96 rav 4, originally thought it was fuel pump untill i manualy actuated fuel pump relay that is located under dash and heard the fuel pump engage. pump still does not come on...


Check the 7.5A IGN FUSE in the fuse block. The circuit opening relay (RB#5) and the EFI main relay (RB#6) have to close to activate the fuel pump.

Jan 11, 2014 | Cars & Trucks

1 Answer

96 Avalon Fuel Pump Relay


There is a "circuit opening relay" which may be what you are looking for. Trace the BLU/BLK wire from the fuel pump to find it. The relay also has a BLK/ORG and GRN wires attached

Jun 14, 2013 | Toyota Avalon Cars & Trucks

1 Answer

Where is the in line fuse on fuel pump for 1994 toyota camry


There is not one on the 4-cyl just for the fuel pump. It is supplied by the EFI 15A fuse thru the EFI main relay and the circuit opening relay. See here p 177

http://www.turboninjas.com/camry/eg1.pdf

On the V6 it is similar, see p 575

http://www.turboninjas.com/camry/eg2.pdf

Mar 11, 2012 | 1994 Toyota Camry

1 Answer

Fuel pump won't run unless engine is cranking, but won't start


Are you sure it's running when cranking? It should have come on when key turned on.
This is for camrys up to year '91. It may apply in your '95, also. Check the 7.5 amp ignition fuse and the 15 amp EFI fuse and the EFI main relay, all located in the fuse box next to your battery. There is also the circuit opening relay tied in to fuel pump operation. It is usually found under center of dash. It is usually not the problem, but it is part of the checks for fuel pump operation.
If your car has a " check connector" or "service connector" (also called a fuel pump check connector) under hood on driver's side near the firewall (a little 1 inch cube with a cap on it), then bridge terminals +B and Fp with a jumper wire. Turn key to on (don't start car). The pump should come on. Listen for fuel return noise from the fuel pressure regulator, and verify pressure in hose from the fuel filter. If nothing, check those fuses above. Here is how power runs to pump: Battery to 40 amp main fusible link-to 15 amp EFI fuse-to EFI main relay-to circuit opening relay-to fuel pump-to ground. Ignition switch and the computer (ECU) work the relays to pass power to pump. Hope this helps some, Randy. Good luck.

Nov 10, 2011 | 1995 Toyota Camry

1 Answer

My 1991 toyota 4runner keeps blowing the efi fuse and my engine floods gas. what could be the problem?


Check the EFI main relay, the circuit opening relay, and the fuel pump relay. Inside the fuel pump relay there is a switch controlled by a coil. During start, the fuel pump gets full power for a couple of seconds to build up pressure. Once pressure is good, the fuel pump relay is supposed to switch (via the coil) the fuel pump to reduced power. If the coil in the relay is bad, the reduced power setting is not available and the fuel pump will run at full power all the time. At this heavy current draw, it won't be long until the EFI fuse blows. This would also give more pressure than is necessary to the cold start fuel injector which runs on a timer. This extra pressure during the time that the cold start injector is operating may be the reason the engine is flooding with fuel.

Jan 29, 2011 | 1991 Toyota 4Runner

1 Answer

Where is the fuse for the fuel pump


There's a relay and a fuse both but if the fuse is blown the pump might be bad as if the fuse is'nt bad the fuel pump probly is. The circuit opening relay is behind the glove box it's powered by the EFI relay in the underhood fuse box and the fuse is the EFI fuse in the underhood fuse relay box

Dec 15, 2010 | 1995 Toyota T100 Xtracab

1 Answer

No power to the fuel pump. looking for a wiring diagram.


The 15a efi fuse pwoers the computer fuel system components including the pump. If you NEVER have pump power, I would check the FP terminal in the underhood diag connector...this is the FUEL PUMP POWER wire tap. If it never gets off zero at any key position (Run or crank) your problem is either wiring, the circuit opening/Fuel pump relay, or the efi main relay, or the fuse itself. If it has power in 1 position but not the other, suspect wiring, or possibly the airflow meter. fuel pump switch power is run thru the airflow meter, if its not hooked up, the fuel pump relay cannot be closed in the run position, or if its open internally or the contacts are bad.

Sep 17, 2009 | 1991 Toyota Pickup

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