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Where is an '84 fuel pump relay? by 5.7Fiero
Started on: 06-09-2014 10:00 AM
Replies: 13 (2034 views)
Last post by: RWDPLZ on 03-24-2019 09:00 PM
5.7Fiero
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Report this Post06-09-2014 10:00 AM Click Here to See the Profile for 5.7FieroSend a Private Message to 5.7FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
It's not the relay on the drivers side of the firewall like my manual says, so does anybody know where it is?

Thanks,
Chase
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Csjag
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Report this Post06-09-2014 10:07 AM Click Here to See the Profile for CsjagSend a Private Message to CsjagEdit/Delete MessageReply w/QuoteDirect Link to This Post
there should be two relays on the firewall one of which is the fuel pump
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Gall757
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Report this Post06-09-2014 10:43 AM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
As I recall, you purchased an 84 with the V8 in it, so who knows what the swapper did. You have a non-stock fuel pump, so I would be looking at those wires and tracing backwards.
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5.7Fiero
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Report this Post06-09-2014 12:14 PM Click Here to See the Profile for 5.7FieroSend a Private Message to 5.7FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
The two relays on the firewall are for the rear turn signals and are not for the fuel pump and a/c compressor like the manual states. The fuel pump is stock with stock wiring, I just dropped the tank yesterday. I have a one wire plug to power the pump and a two wire plug that has the ground and sender wires. Does anyone else have an '84, or just knows where it is?

Thanks,
Chase.

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Csjag
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Report this Post06-09-2014 12:42 PM Click Here to See the Profile for CsjagSend a Private Message to CsjagEdit/Delete MessageReply w/QuoteDirect Link to This Post
If its not on the firewall the car has been modified
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Bloozberry
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Report this Post06-09-2014 12:50 PM Click Here to See the Profile for BloozberrySend a Private Message to BloozberryEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Csjag:
If its not on the firewall the car has been modified


The '84's have completely different engine bay wiring than later models... that's why he asked where the fuel pump relay is specifically for an '84. The two relays you are thinking of are used for rear turn signals on the '84's as mentioned.
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2.5
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Report this Post06-09-2014 01:31 PM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
An 84 shop manual should have a schematic right? I dont have any 84 stuff.
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fierosound
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Report this Post06-09-2014 02:12 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
Must have been moved. On my Indy all 4 relays are clustered together.
The fuel pump and A/C relay are right above the signal lights relays just to the right of the decklid hinge.



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[This message has been edited by fierosound (edited 06-09-2014).]

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Rodrv6
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Report this Post06-09-2014 10:41 PM Click Here to See the Profile for Rodrv6Send a Private Message to Rodrv6Edit/Delete MessageReply w/QuoteDirect Link to This Post
Fierosound is correct. An 84 (with A/C) will have 4 relays all mounted next to each other on the firewall. One is the fuel pump, one is for the A/C compressor clutch. and two are for the rear turn signals/brake lights. If your 84 only has the two for the turn signals, than someone has modified it........

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tebailey
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Report this Post06-10-2014 05:03 PM Click Here to See the Profile for tebaileySend a Private Message to tebaileyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Oops wrong spot.
My 84 has the 4 relays, fuel, A/C clutch, and turn signals. The fuel pump relay is next to the A/C lines.

[This message has been edited by tebailey (edited 06-10-2014).]

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David Hambleton
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Report this Post06-10-2014 09:11 PM Click Here to See the Profile for David HambletonSend a Private Message to David HambletonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Here's a pic of a guaranteed unchanged (except for the recall foil wrap) factory relay setup from my '84 SE:

[This message has been edited by David Hambleton (edited 06-11-2014).]

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Csjag
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Report this Post06-11-2014 08:36 AM Click Here to See the Profile for CsjagSend a Private Message to CsjagEdit/Delete MessageReply w/QuoteDirect Link to This Post
Can you hear the relay clicking when you turn the key on? Maybe you can listen for where the click is coming from to find the relay. If you want to test the relay jump the aldl connector and see if the fuel pump runs.
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tshark
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Report this Post03-24-2019 11:43 AM Click Here to See the Profile for tsharkSend a Private Message to tsharkEdit/Delete MessageReply w/QuoteDirect Link to This Post
Are these 4 relays interchangeable?
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RWDPLZ
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Report this Post03-24-2019 09:00 PM Click Here to See the Profile for RWDPLZSend a Private Message to RWDPLZEdit/Delete MessageReply w/QuoteDirect Link to This Post
Older pic of my 84 engine bay, you can clearly see the A/C and fuel pump relays here on the left below the decklid. A/C has the blue wire, fuel pump has the orange wire

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