Thread: What is the purpose of the ECM relay?

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2014-05-29 02:59:04

#21

Storm88000 Online/offline status of Storm88000 is unknown

Oh well....

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Are you guys talking about this?
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The green controls the fuel pump at least on mine, but mine was custom Marsh'ed so who knows.

Last edited by Storm88000 on 2014-05-29 at 03-01-13.

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Jordan
‘20 Mazda MX-5, ‘20 Toyota Prime, ‘19 Subaru WRX
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2014-05-29 12:49:22

#22

squirlz

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If wired correctly the car should not run without that relay. Look in the FSM and you will know why.

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92 Infiniti G21 - 242 WHP & 182 Ft-LBs (Mustang Dyno) - NA 88mm 12.5:1 VE, N1 cams, Xcessive Intake, Q45 TB, Mazworx Header, 3" Exhaust, Nismotronic ECU on MAP and IAT.
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2014-05-29 13:00:24

#23

Storm88000 Online/offline status of Storm88000 is unknown

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My fuel pump won't prime if I remove mine

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Jordan
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2014-05-29 19:49:44

#24

squirlz

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Originally Posted by klassickrican

Back from the dead..
I have a 94 se-r the issue is with the ecm relay plugged in the car starts but seems to be sputtering and runs lean then when I shut the car off the relay starts Buzzing. ..When I unplug the relay the car starts right up with no issue...I tried changing the relay check all the wiring for feed back and switched ecu's..Stumped..

As you can see in the wiring diagram above the ECU controls the relay through the White/Green wire, then the output, Orange/Blue provides power to the Coil, other sensors, and the fuel pump (not shown in that diagram). If your car runs without this relay you have a short somewhere that is providing power the the Orange/Blue. Not sure what is causing the buzzing of the relay, but something is not wired correctly.

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92 Infiniti G21 - 242 WHP & 182 Ft-LBs (Mustang Dyno) - NA 88mm 12.5:1 VE, N1 cams, Xcessive Intake, Q45 TB, Mazworx Header, 3" Exhaust, Nismotronic ECU on MAP and IAT.
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2014-06-06 16:52:49

#25

klassickrican Online/offline status of klassickrican is unknown

THINK POSITIVE!

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Thanks bro

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Dominic
91 b13= Drag car

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