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Guest Message by DevFuse
 

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Loyale EJ swap: fuel pump relay splice


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8 replies to this topic

#1 Carl B.

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Posted 14 December 2013 - 03:40 PM

Guys Im having trouble getting my EJ swap to start.  Im not sure if I spliced the EJ harness fuel pump relay into the correct point.  I found the blue relay plug above the Loyale ECU, which I believe is the ea82 fuel pump relay, and I spliced into pin 3.  The color codes don't match what my manual says but from my searches I think that is the correct relay.  Also I can hear the pump run for a second as soon as the car is turned on but nothing when cranking.

 

Please help!  Thank you, I really want to get this thing running.



#2 Carl B.

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Posted 14 December 2013 - 04:04 PM

Also this is an automatic seatbelt model.  I just discovered that it grounds the fuel pump through a different circuit.  Could that be part of my problem?



#3 Prwa101

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Posted 14 December 2013 - 04:42 PM

Your using the ea fuel pump relay?

If you can hear the pump turn on fuel pump relay is working and you have it right.

Check you starter silly wire, it's the black clip on the back of the starter on the pig tail.

Picture would help to see what you got going on.

Edited by Prwa101, 14 December 2013 - 04:50 PM.


#4 Carl B.

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Posted 14 December 2013 - 05:13 PM

No I'm not using the EA fuel pump relay (FPR).  The black/red wire from the EJ FPR (pin 3) goes to the fuel pump.  I am splicing it into the existing fuel pump wiring under the dash at the EA FPR.  

 

lbck.jpg

 

My EA wiring diagram shows: pin 1 blk/wht, pin 2 blk/wht, pin 3 blu/blk, pin 4 blu/wht.  

from the pic you can see the wires are colored differently

 

Just trying to figure out which wire to splice. 


Edited by Carl B., 14 December 2013 - 08:37 PM.


#5 Carl B.

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Posted 14 December 2013 - 05:23 PM

I know the starter wire you're referring to.  Should I be using the EA or EJ starter wire?  Car turns over with EA starter wire but not with EJ one.



#6 Gloyale

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Posted 14 December 2013 - 08:03 PM

Year and engine of Loyale?

 

Just checked.  Auto belt or not does not affect ground.

 

Auto belt models there is a "rev sensor" similar to old carbie F.P. units that cuts power to the relay if no TACH. signal.

 

This would only affect the trigger side of the relay....not the actual F.P. power.

 

Since your are tapping directly into the BLack/Red wire out of the EJ relay directyl to the Blue/Black wire at the EA plug you should be good.  The Ground side of the fuel pump is directly to body.

 

This is all for SPFI......see below for other.

 

 

 

 

****MPFI models F.P. grounds though the ECU...not the body....so a ground must be added for pump..otherwise the same for EJ swap  MPFI only *****


Edited by Gloyale, 14 December 2013 - 08:12 PM.


#7 Carl B.

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Posted 14 December 2013 - 08:05 PM

1991 spfi.  swapped in a 2000 2.5



#8 Carl B.

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Posted 15 December 2013 - 12:27 PM

What about the starter wire Prwa101?  The way I interpreted Numbchux write up was that its not essential to hook up, its only for different fuel mapping on cold starts.

 

 

It Starts!  I feel pretty darn ridiculous but I spliced into the wrong blue relay.  I found the the correct one and she fired right up!

 

Thank you all


Edited by Carl B., 15 December 2013 - 12:43 PM.


#9 Prwa101

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Posted 15 December 2013 - 04:15 PM

Haha nice job! If its starts it shouldn't matter I guess.

Always refute to the wiring diagrams, from what I've seen there always right. Haha.




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