Need a new one. Honda Main Fuel Relay 86-93 Mitsuba RZ-0063

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

If two relays on the same car have two different part numbers on them, there is usually a reason why.

The dealer is mistaken! Your problem is probably the PGMFI relay that is way up under the dash on the driver's side. It has "mitsuba" written on the side of it. They are a very common problem, so are the distributors. Replace the relay first before doing anything else. They are cheap and always fail so even if I'm wrong, you're going to need it soon anyway. The computers rarely fail.

Replace the "main relay" write down your VIN call the dealer, or very good parts store, and order the Main Relay. There is a good chance the dealer has it in stock. It is located under the dash behind the change drawer. Its a black or grey relay and has a # on it like RZ-0064  This is a very common intermittent problem.

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.
Integra 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.


Legend, 96-98 Acura TL main relay Acura Integra 98-01 main relay location:

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.
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.

It is under the left side of the dash, next to the fuse box, bolted to the body of the car. The relay says "Mitsuba" under that
"relay assy. main". It may be difficult to get to, sometimes you can unplug the relay, leave the old one there, and plug the new one in and tape it to the harness. Good luck, Honda Al

You need to replace the PGMFI relay up under the drivers side dash. It is sometimes called the main relay or the fuel injection relay. It is 1"x1"x2" and will have "mitsuba" written on the side. If you get it out, I can tell you how to fix it for free if you know how to solder, or you can by a new one at any auto parts store for about 50 bucks.

the relay cover slides off very easily so you can expose the circuit board take your pgmfi relay apart and you will see two small relays on the board look at the contacts for the relays to see if theyre burnt then turn the board over and look at the sauder joints at least one of these will probably be burnt or not enough sauder will be ther to make a good connection.Look real carefully at these i use a magnifying glass my self because i have seen numerous times where the sauder will have a small crack (like a ring or circle) around it causing a poor connection these are the most common problem with these relays (almost the only problems) i have seen in the past six years that i have worked at my local honda dealer

its located undernite the steering colum on the left side. it should asy Mitsuba japan relay main.

Hi...
The Relay RZ - 0105.
Is the Main relay...
Thsi relay is used to : Powered the FUEL PUMP, INJECTORS, IGNITION COIL and the more important The ECM " Engine control module"

Mitsuba is the Brand...

Ok. I hope this help on your question.

Thank you for use fixya..