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Is there an injector relay or fuse? - 1990 Ford Bronco

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There should be a fuse labeled something like "EFI" in the fuse panel or power distribution box in the engine bay.

Posted on Mar 22, 2011

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2 Answers

Fuel injectors not spraying


Bad fuel pump or relay to fuel pump or blown fuse to Main Relay or bad relay, could cause no spray from injectors.
Hope this helps.

Apr 02, 2015 | 2012 Mazda 6 i Sport Sedan 2.5L 4-cyl....

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My 2000s10 keep blowing the ecm b fuse when i trun the key on


That fuse ECM B also power's the fuel pump an fuel injectors ! It the under hood fuse / relay box ,pull out the fuel pump relay then put fuse ECM B back in an see if it still blows , You could have a shorted injector or fuel pump or the relay !

Mar 14, 2015 | 2000 Chevrolet S-10

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Car is turning over but not getting fuel ideas anyone thanks


There is not much information for a good answer.
  1. Fuel filter clogged
  2. fuel pump not working [fuse,bad pump,broken wire etc]
  3. computer not telling the pump or injectors to work [should set a code]
  4. dirty injectors

Feb 09, 2015 | Cars & Trucks

1 Answer

Where is the fuel injector relay fuse on a 98 ford expedition


In the Power Distribution Box-the fuse relay block under hood- it's on the driver's side.

it is fuse # 24, a 30 amp green fuse. This fuse is only hot in run or start, so with key on, the fuse sends power to the PCM Power Relay (also in the power distrib. box), turning the relay on so power goes to the fuel injectors, among other things..

May 25, 2014 | 1998 Ford Expedition

1 Answer

Were is the injector fuse on 06 Sebring sedan


Well, the injectors get power from the automatic shutdown relay which gets power from a 30amp fuse number 14.
The relay and fuse should be listed in your owners manual.

Jan 17, 2014 | Cars & Trucks

2 Answers

88 chevy 350 with no fuel pump and no injector pulse


The fuel pump circuit and injector circuits are fed by two different fuses.
The fuel pump relay and injectors are controlled by the computer. Have you checked both ECM fuses for power ?

Apr 10, 2013 | 1988 Chevrolet K1500

1 Answer

1997 GMC Sierra, I keep blowing the ECM 1 fuse, I replaced Fuel Pump relay and Fuel Filter. Does the ECM 1 Fuse Pump the Fuel Pump, also disconnected the Fiter turned on the key and no fuel.


ecm1 is injectors not fuel pump ecm-b is fuel pump its more likely to be a faulty relay for the injectors, it would be a similiar design to this
12900_oil_sending_unit_and_fuel_pump_circuit_80-yoo05im5qhid2i2poe1uh03c-5-0.gif this is for the fuel system, relay for the injector is nearly the same.

Nov 03, 2012 | 1995 GMC Sierra C1500

1 Answer

Asd relay not operating


The ASD is what powers the fuel pump relay you need to check the engine fuse box junction for open fuse especially the fuel pump fuse and the ignition fuse. Get the ASD power corrected and the fuel pump injectors coil and reference will be back in action,check the fuse especially fuse No.23

Mar 26, 2012 | 2002 Jeep Wrangler

1 Answer

Is there an injector relay on a 1994 nissan maxima computer


Computers do not use relays. Computers use large transistors (A.K.A. "drivers") to control things like relays, solenoids and injectors.

That being said, your Nissan is equipped with "sequential multiport fuel injection". There are 6 injectors, all of which are supplied power from a 15 Amp fuse in the underhood fuse and fusible link center. The white wires at each of the injectors is hot (Battery Positive voltage) at all times, even with the ignition switch OFF. The drivers in the computer (or ECM)toggle the other wires on each injector (each injector having its own wire color) to ground (Battery Negative) in order to complete the injector circuit and cause the individual injectors to fire at the proper time. This is what is known as "injector pulse".


To sum-up, there are no relays involved in the actual injector circuits on your Maxima. The only relay that is remotely related to the injectors is the ECM Power Relay which supplies power to the ECM. Since the ECM will not function if this relay is defective, neither will the injectors work if this relay is faulty.

I hope this helps you to understand whatever it is you are trying to figure out.

Mar 17, 2012 | 1994 Nissan Maxima

1 Answer

Injector not working why put new injector new computer new fuel pump does it have injector relay 1987 celebrity


Check fuel pressure. Have you replaced the fuel filter on schedule? Verify that the fuel pump is getting power. Power goes through an in-line fuse, then the fuel pump relay or the oil pressure sensor. (The relay bypasses the oil pressure sensor while the engine starts, but fuel pump power goes through the sensor during normal run operation. If you lose oil pressure, the fuel pump is shut off to protect the engine.) On four-cylinder models, the fuse is in the fuse block (E PUMP 10)
The fuel injectors are connected to the ECM fuse on one side and straight to the engine computer on the other side. Check the connectors and wiring, especially at the injector.

Aug 26, 2011 | 1987 Chevrolet Celebrity

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