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Fuel injector fuse location - 2004 Toyota Sequoia

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Under the hood has a fuse panel

Posted on Oct 29, 2012

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1 Answer

Where is the fuel injector switch located


There no switch.
The pink wire at fuel injector is voltage. The other wire is ground, controlled by computer. There is a fuel injector fuse, not only check the fuse, check the fuse circuit for voltage. Use a test lite to check for voltage.
Engine cranking, do you have spark at the spark plugs? Use a gage and check proper fuel pressure.
Any applicable trouble codes?

Apr 16, 2016 | 2005 Hyundai Sonata 2.4

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Does an 87 Thunderbird have a fuel injector fuse


Here is a wiring diagram that should work for the Injectors. !988 is the same as 87. Enlarge the diagram by copying the diagram to the picture file of your system and then using the viewer to enlarge it.

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Jul 12, 2012 | Ford Cars & Trucks

1 Answer

Fuse blows for fuel injectors '99 Saturn SC2


Locate the "ground" side of the fuse connector (the side that goes to the injectors and DOES NOT go to the battery).
Connect an ohm meter between the ground side of the fuse connector and the battery NEGATIVE post. The short will show a resistance of less than 5 ohms.

With the meter connected as above, start unplugging all of the connectors that are involved in that circuit one at a time to isolate the short. (you will know you found it when the resistance reading goes way up).

Fortunately, this is an easy one. That fuse feeds the injectors, and NOTHING else. (see partial Power Distribution diagram below) You most likely have a shorted injector. If unplugging the injectors one at a time does not find the problem child, then you need to check the wiring harness between the injectors and the fuse block to see if it is rubbed through or pinched.


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May 13, 2012 | 1999 Saturn SC

1 Answer

How to replace injectors on 305 1997 Chevy pickup vortech?


disconnect battery, disconnect fuse pump fuse, locate fuel rail where the fuel injectors are connected to, then unmount the fuel rail, then disconnect wire to injector, then wiggle it out of the rail, then do the same for the other injectors. to install simply follow reverse order.

Jun 16, 2011 | Chevrolet 1500 Cars & Trucks

1 Answer

Shorted out one of the fuel injector wires,and now my fuel pump isn't working,checked the fuses,none are blown,any ideas,other fuses or fuse link?thanks,


The fuel injectors receive their power from the Powertrain Control Module (PCM) Power Relay which is located in the Engine Compartment Fuse Box. This circuit is protected by Fuse "I" (20 Amp), also located in the Engine Compartment Fuse Box. If you blew a fuse, this would be the one.
The fuel pump, however, is a totally different circuit. (although it is controlled by the PCM which will not work if the fuse above is blown) The fuel pump gets its power from the fuel pump relay which is protected by Fuse "O" (20 Amp) in the Engine Compartment Relay Box.

Jan 30, 2011 | 1994 Ford Bronco

1 Answer

Car not starting, no fuel getting into engine


Start with checking your fuel pump and injector mini relay. Fuel pump relay is #18 and injectors is #48 and is located in the fuse box under the engine hood.
Also inspect your ECM fuse, the fuel pump get's it power from the ECM fuse and at wost. It's your fuel pump that has gone bad and that is located in the gas tank, but make sure your fuel filter is not to dirty causing fuel restriction and replacing that will address that issue.
Thank you for using fixya and keep us posted.

Aug 26, 2010 | 2002 Pontiac Grand Am

1 Answer

Where is the fuel pump reset button the van will turn but acting like no fuel


There is not an fuel pump reset button. There is however an Automatic Shutdown Relay that acts as a fuel pump shutdown. On the 1998 Model: It should be located in the Junction Box located under the leftside of the dashboard There should be a cover over the top of the Junction Box. On the backside of that cover is the identification and location of the Relays and Fuses. If there is no cover, your Owner's Manual should have a schematic identifying the location, position, and type of Relay and Fuses. There should be additional Fuses involving the Fuel Pump. Make sure you not only check the Relay and Fuses to see if they are good, also check with a Voltmeter to check for voltage, with the Key in the "ON" (not start) Position; it should read approximately 12v,

With approx 12v present at the Relay and Fuses, one quick way to determine if there is Voltage to the Fuel Pump:
1) With a Partner behind the wheel. Take the Gas Cap off and place your ear up close to the opening of the Gas Filler Tube. Have your Partner turn the Key to the "ON" (not Start) Position. You should be listening for a humming sound (for 2-3 seconds)meaning the Fuel Pump is getting power (volts).
2) If there is no "humming" or you are not sure, get underneath the Van next to the Gas Tank and have your Partner do it again. Listen for a humming.
3) If there is definitely no humming present with good fuses, relays and voltage, then most likely the Fuel Pump is bad.
4) However, a lot of Fuel Pumps have been replaced only to find out the Pump was good, but the electrical wiring harness was bad and the real culprit.
5) You will have to slightly lower the Fuel Tank to gain access to this electrical connection.
6) After you disconnect the electrical connection, using the Voltmeter check for approximately 12v coming from the Wiring Harness/Connector.
7) Inspect the Wiring Harness/Cnnections for any signs of burns, melting, or shorting. Repair this wiring harness before deciding to replace the fuel pump needlessly.
8) After repairing the Wiring Harness/Connection: Replug it back in and recheck the Fuel Pump one last time.
9) If still no "humming" the Fuel Pump needs to be replaced.

If there is humming from the Fuel Pump, then there are four possible problems.
a) Fuel Filter (when was the last time it was replaced?) It could be clogged, prohobiting fuel flow.
b) Fuel Regulator. Located on the Fuel Rail where the Fuel Injectors are. If there is a presence of Gas in the Vacuum line (the only rubber line on the Fuel Regulator) attached to the Regulator, then the Diaphram of the Fuel Regulator is broke and Gas is not reaching the Fuel Injectors. Instead it is being dumped into the Intake. Replace the Regulator.
c) Fuel Injector Circuitry problem. Using an Auto Stethoscope: Place the Stethoscope end in each individual Fuel Injector. Have your Partner attempt to start the Van. If there is no evident and rythmic "clicking" (fuel injector's gate opening and closing) then the Fuel Injector is faulty or the electrical connection is faulty. To check to find out which is faulty, switch Fuel Injectors (one clicking with one not clicking) and recheck for the clicking.
d) Clogged Fuel Injectors. With the Fuel Rail (with the Fuel Injectors) removed out of the engine. Place clear Plastic tubing over the nozzle ends of all exposed Injectors. With a Partner Starting the Engine, look for
(1) Fuel Flow (presence).
(2) Fuel Spray (pressure).

Let me know if this helped, or if you have any additional information or questions. Feel free to contact me at FixYa.com!

Feb 13, 2010 | 1998 Plymouth Grand Voyager

1 Answer

No power to fuel injectors


Determin if the injector operating:
  1. disconnect the injector electrical connector and measure the resistance of each injector with an ohmmeter. Compare the measurement with the resistance value Specifications are 11 to 18 ohms.
  2. Replace any injector whose resistance value does not fall within the specifications.
If the injector was not operating but the resistance reading was within specifications, the PCM Powertrain Control Module (PCM) or the circuit to the injector may be faulty.

Check the ignition fuse located in the engine compartment fuse center. Also. check the fuel pump relay.
Note: The fuel pump relay is located behind the radio in the center of the instrument panel.

If the relays are good and the fuel pump does not operate. check the fuel pump circuit. If the wiring and the connectors are
good, replace the fuel pump.

Nov 19, 2009 | 1999 Ford F250 Regular Cab

1 Answer

1991 Honda Civic DX Location of Fuel relay switch


in the fuse box up by the firewall on the drivers side .... fuse 13 fuel injector relay is the only fuel related fuse/relay that i could locate.fuse 9 in the passenger compartment fuse box as well.... what size motor is in your car ?

Apr 19, 2009 | 1991 Honda Civic

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