Question about 1991 Volvo 740

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Told needed a Main fuel Relay where is it located

What does the main relay look like

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  • Volvo Master
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RELAY LOOKS LIKE A FUSE BUT ITS A LITTLE BIGGER.RELAYS HAS FOR BLADE TERMINAL FUSE HAS TWO BLADE TERMINALS.

Posted on May 28, 2010

  • Jonah Oneal May 29, 2010

    FUSES AND RELAYS LOCATED ON LEFT SIDE OF DASH.

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  • Master
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Fuel relay located behind ashtray ,(ashtray has to be removed and panel with cigaret lighter too)and fuel pump relay I think is the tallest one.

Posted on May 28, 2010

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Posted on Jan 02, 2017

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SOURCE: Location of main relay.

HERE is a diagram Good luck. Its under the dash right under the steering column,...http://www.tegger.com/hondafaq/mainrelaylocation/7-main_relay_closeup.jpgits the brownish/orange box.

Posted on May 15, 2009

  • 137 Answers

SOURCE: 1990 Acura Legend, location of main relay for fuel pump

looked it up online, looks like its in the underhood fuse box but couldn't get a good diagram that shows which relay number it is. the website i use is sort of dependent on the manufacturer, apparently acura did not feel like sharing that info. hope that helps

Posted on Jun 17, 2009

BCAS1298
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SOURCE: Where is the fuel pump main relay located on a

It's going to be your main relay, located under the dash on the drives side, turn key on and off, you will he a clicking sound, that the main relay control your power to you computer also.

Posted on May 27, 2010

  • 1 Answer

SOURCE: where is fuel pump main relay

1999 honda accord blown acg fuse everytime i put a fuse in it blows

Posted on Aug 11, 2011

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I have a 1996 Acura 3.5 R.L. just put a new fuel pump in and it won't start. It turns over, but will not stay started.


Check your main fuel relay.



Fuel Supply System


PGM-FI Main Relay


Description


This PGM-FI main relay is located behind the dashboard


lower cover. The PGM-FI main relay actually contains


two individual relays. One relay is energized whenever


the ignition is on. It supplies battery voltage to the PCM,


power to the fuel injectors, and power for the second


relay. The second relay is energized for 2 seconds when


the ignition is switched on, and when the engine is running.


It supplies power to the fuel pump.


PGM-FI


MAIN RELAY



FUEL


PUMP


RELAY


Relay Testing


NOTE: If the engine starts and continues to run, the PGMFI


main relay is OK.


1. Remove the PGM-FI main relay.


2. Attach the battery positive terminal to the No. 3*


terminal and the battery negative terminal to the


No. 2* terminal of the PGM-FI main relay. Then


check for continuity between the No. 5* terminal and


No. 2 terminal of the PGM-FI main relay.


• If there is continuity, go on to step 3.


• If there is no continuity, replace the relay and


retest.



*: 8P CONNECTOR


To FUEL PUMP


3. Attach the battery positive terminal to the No. 4 terminal


and the battery negative terminal to the No.


7* terminal of the PGM-FI main relay. Then check


that there is continuity between the No. 3 terminal


and No. 1 terminal of the PGM-FI main relay.


• If there is continuity, go on to step 4.


• If there is no continuity, replace the relay and


retest.


4. Attach the battery positive terminal to the No. 1 terminal


and battery negative terminal to the No. 2*


terminal of the PGM-FI main relay. Then check that


there is continuity between the No. 5* terminal and


No. 2 terminal of the PGM-FI main relay.


• If there is continuity, the relay is OK;


If the fuel pump still does not work, go to Harness


Testing on the next page.


• If there is no continuity, replace the relay and


retest.



To PCM CONNECTOR


TERMINAL A4


To ST. SWITCH


To GROUND


To IGN. 1 To BAT


To PCM


CONNECTOR TERMINALS


A13 and B1


FUEL PUMP


RESISTOR


FUEL PUMP

Sep 18, 2013 | 1996 Acura TL Series

1 Answer

Fuel cut off relay location inershaldamper location


The fuel pump is relayed by the Main Relay, on your 92 Accord. It is located up under the dash, above the driver's left foot location. Search on this site for Accord main relay diagrams and posts.

Jan 09, 2013 | 1992 Honda Accord

1 Answer

Car will not start...its not the starter...but acts like its not getting fuel


Try replacing the fuel pump main relay. My 90 accord had the same problem when the main relay went bad, it would take almost 10 tries to start. The Fuel pump main relay is located under under the dashboard on the far left side. The main relay is held in by a 10 or 12 mm bolt. It is small, grey, and says mitsuba main relay on it. replacing this should fix your starting problem. Also check all fuses.
Hope this helps
Matt

Jun 13, 2011 | 1990 Honda Accord

1 Answer

Car cranks but dose not start, there is no power to distributator or fuel pump


I suspect the at this point, the main relay is defective. This relay controls power to fuel and spark circuits.

The PGM-FI Main Relay is actually comprised of two individual internal relays. When the ignition switch is initially turned ON , the Powertrain Control Module (PCM) supplies ground to the PGM-FI Main Relay. This ground triggers one of the PGM-FI internal relays that sends battery voltage to the fuel pump for two seconds to pressurize the fuel system.
When the engine is running the PCM supplies a continuous ground to the PGM-FI Main Relay. The supplied ground keeps the relay in the "closed" position providing electrical current to the fuel pump, keeping the fuel loop pressurized while the engine runs.
If the engine is not running with the ignition on, the PCM cuts the ground to the PGM-FI Main Relay, causing the relay to "open" and stop the electric current flow to the fuel pump. As mentioned previously, if the engine is not running, the PCM will only supply ground to the PGM-FI Main Relay for two seconds when the ignition switch is initially switched to the ON position.
The PGM-FI Main Relay also supplies electrical power to the Idle Air Control (IAC) Valve and to the fuel injectors.

TESTING


If the engine starts and continues to run, the PGM-FI Main Relay is working and does not need to be replaced.
  1. Locate and remove the relay.

On some models of the Civic and Civic del Sol it is located to the left of the steering column under the dash. Many later models position it either near the passenger right side kick panel under the dash or by the driver left side kick panel up under the dash.
  1. Attach the battery positive terminal to the No. 2 terminal.
  2. And the battery negative terminal to the No. 1 terminal.
  3. Check for continuity between terminal No. 5 and 4.
  4. If there is no continuity, replace the relay and retest

Aug 05, 2010 | Honda Civic Cars & Trucks

2 Answers

Where is fuel pump main relay


Grab a Haynes manual #42014 and on page 4-4 it explains how to test the main relay. The main relay is located up under the instrument panel, attached to a bracket on the left side of the steering column. Also, check the number 1 fuse or the ACG S fuse found in the engine compartment. Both of these fuses are 15 amp.

Jul 12, 2010 | 1999 Honda Accord

1 Answer

Where is the fuel pump main relay located on a


It's going to be your main relay, located under the dash on the drives side, turn key on and off, you will he a clicking sound, that the main relay control your power to you computer also.

May 27, 2010 | 1990 Honda Accord

1 Answer

Where is the fuel pump relay located?


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.

G

Jun 27, 2009 | 1992 Honda Accord

2 Answers

Buzzing fuel pump


sounds like the fuel pump relay is stuck on. find the relay and replace it. hope this helps mike

Jun 16, 2009 | Acura TL Cars & Trucks

2 Answers

Main relay location


The main relay is located behind left side of the dash and above and behind the fusebox and above the hood release.

rate this solution fixya.

Diagram below:-

Acura Main Relay location and removal procedures.
mainrelaylocationacura.gifrz-0063.jpgIntegra EFI Main Relay for:
  • Honda Civic/CRX/del Sol 1984-1995
  • 1986-89 INTEGRA
  • 1990-93 INTEGRA #39400-SH3-003 RELAY (RZ-0063)
  • 1986-90 LEGEND #39400-SH3-003 RELAY (RZ-0063) (RZ-0046)
  • 1991-93 LEGEND (rz-0105)
  • VIGOR (behind the left front kick panel)
The main relay is located behind left side of the dash and above and behind the fusebox and above the hood release. The First generation Legend main relay location is between the steering column and the fuse box. It's deep in there. There was a little difficulty drawing the relay so it's actually very deep in there. There is a device (a relay) blocking the main relay. You will need to remove it to get a view of the main relay. The removal procedure is the about the same as the Accord's procedure.

mitsubalegend.jpg
Legend, 96-98 Acura TL main relay
Acura Integra 98-01 main relay location:
integra98-01mainrelay.gif
Locating the main relay using your ears and fingers:
Steps:

1. Turn the ignition to ON. You should hear two clicks (a thousand of a second apart) under the left or right side of the dash board. One click is for the ECU/Injectors the other is for the fuel pump. At this moment the check engine light should come on.
2. Listen carefully at the moment the clicks engage (usually somewhere underneath the dashboard.) Reach in and touch the main relay.
3. 2 seconds later you should feel a click if the main relay is at least working or wait until it works. At this moment the check engine light should go out.
4. Turn the ignition to start and you should feel a click, turn engine off you should feel another click.
5. Most main relays should have seven terminals. Please check if the location is already listed below.

How do I get the main relay out?
Steps: See four ways below so you can get it out. First you have to reach high up in there and do all this with one hand and a flashlight.
efiremoveinstall.gif A. Unbolt the bolt using a 10mm socket (picture A) or
Ab. Unclip the clip from the steel tab and slide it apart (picture A) or
B. Separate the steel tab from the plastic case (picture B) with a large flat screw driver jam and twist between the plastic case and the tab or
C. Disconnect the negative battery terminal. Unclip two clips I pointed with two arrows (picture C, or below) with a small flat head screw driver or with a strong thumb and then yank it out (D.) This is the preferred choice by many. Mechanics prefer choice A and maybe B. See detailed relay circuit photo.
clip.gif

mainrelaydiagram.th.gif

May 24, 2009 | 1995 Acura Integra Coupe

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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