1989 Mazda RX7 Fuel pump relay

RS.ESCORT

MEMBER
1989 MAZDA RX7
4 CYL
2WD
MANUAL
240,000 MILES

Hi Folks. I have an 88 or 89 Mazda RX7 and have no power to the fuel pump, and the fuel guage does not work. The car has been sitting for about 10 years, but all other electrical items work.

I understand there is a relay somewhere for the fuel electrical, but I can't find it. ( It does not appear or at least is not marked as a fuel fuse or relay in either the under hood or drivers side kick panel fuse boxes.

Can you tell me where the relay should be, and if that is the only fuse/relay in the system?

7 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check fuse no. 7 if okay test the circuit opening relay located behind instrument panel and fuel pump relay at behind right headlight

See below

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Saturday, August 29th, 2009 AT 7:56 PM

RS.ESCORT

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3 POSTS

Thanks, I wouldn't have looked there for the relays. I pulled them out but really have no way to test, and jumping the connector terminals for the under hood relay just made for some warm wires ( between two of the four, between another two I got a clicking sound coming from the area of the intake plenum )

I will cruise down to Mazda and pick up new relays. One less thing that could be wrong then.

Oh and my fuses are not numbered on the panel or the cover. Are you talking about the 15 amp engine fuse?

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Saturday, August 29th, 2009 AT 8:33 PM

RASMATAZ

MECHANIC
75,992 POSTS

Oh and my fuses are not numbered on the panel or the cover. Are you talking about the 15 amp engine fuse?

Yes Sir-also give me your email addy and I'll send you the road map on the fuse block and the computer controlled circuitry.

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Saturday, August 29th, 2009 AT 8:40 PM

RS.ESCORT

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Excellent. It's thegoodlife4us@telus. Net

I very much appreciate your help.

Mark Collet

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Saturday, August 29th, 2009 AT 9:01 PM

ROBERTBLAS

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1 POST

Gentlemen, This is a shot in the dark but I am having the exact same problem.1989 RX7 fuel gauge doesn't work and the fuel pump doesn't work. Would like to check and see if it is the same problem you had before replacing the pump.

Can either of you send me the diagram of the fuse panel so I know where #7 is and Mark, could you let me know if this was in fact the problem?

Thanks,

RB