patra_is_here Posted January 3, 2008 Report Share Posted January 3, 2008 86 esir i'm looking in the service manual right now, but, in case i can't find it, someone where might know. Link to comment Share on other sites More sharing options...
UlrichWolf Posted January 3, 2008 Report Share Posted January 3, 2008 Technically, there isn't one. However, I believe what might point you in the correct direction, is the "main relay" located above the ECU. Tim Link to comment Share on other sites More sharing options...
patra_is_here Posted January 3, 2008 Author Report Share Posted January 3, 2008 well, looking at the wiring diagram, there's definitely some sort of relay in line with the fuel pump. is the main relay a large relay, with say, maybe 8 wires? Link to comment Share on other sites More sharing options...
UlrichWolf Posted January 3, 2008 Report Share Posted January 3, 2008 Yeah, it's got a lot of connections on it. Tim Link to comment Share on other sites More sharing options...
patra_is_here Posted January 3, 2008 Author Report Share Posted January 3, 2008 thanks homie! Link to comment Share on other sites More sharing options...
Truth Posted January 3, 2008 Report Share Posted January 3, 2008 i thought the fuel pump relay was the two-wired relay near the 5 a/c relays on the bracket above the coil? Link to comment Share on other sites More sharing options...
Dad Posted January 3, 2008 Report Share Posted January 3, 2008 Just above the ECU If I'm right do I get a prize? Dad Link to comment Share on other sites More sharing options...
JAinsworth Posted January 3, 2008 Report Share Posted January 3, 2008 Just above the ECU If I'm right do I get a prize? Dad Not from me But I will agree with your answer.....but...are you smarter than a 5th grader :shock: Jimmy Link to comment Share on other sites More sharing options...
indy_85stariones Posted January 3, 2008 Report Share Posted January 3, 2008 Technically, there isn't one. However, I believe what might point you in the correct direction, is the "main relay" located above the ECU. Tim The "main relay" has two circuits...1) one to provide power for injectors2) the other, to provide power to fuel pump(note - unlike most japanese 80's cars, our "relay" doesn't provide power to the fuel pump when key is in "ON" position. It waits until key is in "START" position before providing power to fuel pump. Usually our cars won't start on the first cranking attempt, because it takes some time for our fuel pressure to build up.) Link to comment Share on other sites More sharing options...
randomguy Posted January 3, 2008 Report Share Posted January 3, 2008 orly on my FIP i hooked it up to the golden thing behind/under the glove compartment (what i thought was the fuel pump relay lol) it worked lol Link to comment Share on other sites More sharing options...
Indiana Posted January 3, 2008 Report Share Posted January 3, 2008 the fuel pump relay is half of the control relay http://www.b2600turbo.com/images/IM000985.JPG http://www.b2600turbo.com/images/IM000993.JPG http://www.b2600turbo.com/images/IM000933.JPG BW-black/white stripe 01 / (+) output / turns on the Fuel Pump when starter is cranking or engine is running WR-white/red stripe 02 / (-) input / signal from ECU to activate fuel pump relay after ign. switch moves from "start" position and engine is running BR-black/red stripe 03 / (+) output / when ignition "on", this sends power to the injectors B -black 04 / (-) grounded to body BY-black/yellow stripe 06 / (+) input / from ign. switch "start" position this activates a relay that turns on the fuel pump R -red 05 / (+) output / when ignition "on", this powers the ECU L -blue 08 / (+) input / from ign. switch "on" position this activates a relay that powers the ECU and the injectors B -black 07 / (+) input / fuse link back to Battery positive terminal Link to comment Share on other sites More sharing options...
patra_is_here Posted January 3, 2008 Author Report Share Posted January 3, 2008 thanks indiana! my wiring diagram had different colored wires listed, so, that pic really helped clarify. Link to comment Share on other sites More sharing options...
chasm2530 Posted January 3, 2008 Report Share Posted January 3, 2008 Just above the ECU If I'm right do I get a prize? Dad Not from me But I will agree with your answer.....but...are you smarter than a 5th grader :shock: JimmyI won a million dollars on the "Are You Smarter Than a 5th Grader" home version...where's my check? Link to comment Share on other sites More sharing options...
DJpowerHaus Posted January 3, 2008 Report Share Posted January 3, 2008 Nice post! I always wanted to know what was inside of that Main Relay. Link to comment Share on other sites More sharing options...
Force_Feed1988 Posted January 3, 2008 Report Share Posted January 3, 2008 That relay right there caused about 2 days of heart ace for me. I unplugged it when changing the ECU, and the relay got pushed under the seat. For 2 Days I tried to get my car to run. I was getting no Spark or Fuel! After switching between ECU's dozens of times I realized There was something missing. After I found it, I Plugged that bad boy in and it started right up. Link to comment Share on other sites More sharing options...
dj_justice Posted April 18, 2008 Report Share Posted April 18, 2008 That relay right there caused about 2 days of heart ace for me. I unplugged it when changing the ECU, and the relay got pushed under the seat. For 2 Days I tried to get my car to run. I was getting no Spark or Fuel! After switching between ECU's dozens of times I realized There was something missing. After I found it, I Plugged that bad boy in and it started right up. Im having a problem with my new fuel pump cutting out then coming back on then cutting out again. Could the relay be the culprit? Link to comment Share on other sites More sharing options...
Recommended Posts