Thorough guide on hardwiring 92' fuel pump?
#1
Thorough guide on hardwiring 92' fuel pump?
Hello HT, just wanted to know if any of you guys know a properly written guide on how to hardwire a 92-95 Civic Fuel pump.
I know it consists of wiring a wire from battery to fuel pump with an inline fuse and relay in the middle some where. But I'm not to 100% comfortable with doing it yet. A guide would ease some worry because I know its a delicate process and if something goes wrong you can risk alot.
Thanks. Any input/tips would be awesome.
I know it consists of wiring a wire from battery to fuel pump with an inline fuse and relay in the middle some where. But I'm not to 100% comfortable with doing it yet. A guide would ease some worry because I know its a delicate process and if something goes wrong you can risk alot.
Thanks. Any input/tips would be awesome.
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#8
#9
Re: Thorough guide on hardwiring 92' fuel pump?
Have you voltage tested fuses 31 and 24? Are they blown?
Did you clean and tighten the G101 ground on the thermostat housing?
#10
Re: Thorough guide on hardwiring 92' fuel pump?
When I turn the key to on the CEL goes on then off after 2 seconds , as you mentioned. I brushed G101 with a metal brush to be 100% sure its not the caused and tightened it back on accordingly. Fuse 24 is 15a for the PGMFI Relay correct ? And which fuse is 31?
#11
Re: Thorough guide on hardwiring 92' fuel pump?
This^ tells you that fuses 24 and 31, the main relay, and ECU are fine. It should be straightforward to pinpoint the problem and fix it. How exactly did you determine that the fuel pump does not receive voltage?
#13
Re: Thorough guide on hardwiring 92' fuel pump?
When you turn the key from off to ON(II), the fuel pump connector will receive battery voltage (~12V) for only 2 seconds and then you will measure 0V. Did you just miss the 2 second period?
What did you use as ground in your voltage test?
#14
Re: Thorough guide on hardwiring 92' fuel pump?
When I turn my key from off to ON (II) I receive no 12v readings despite the main relay clicking as it should and CEL turning off as it should. For my ground I used a unpaint part of the frame .
#15
Re: Thorough guide on hardwiring 92' fuel pump?
If you are taking the voltage reading as soon as the key is turned from off to ON(II), then most likely the Yel/Grn wire that runs from the main relay to the fuel pump connector is broken. There is one connector (C415/C551) between those two points - check voltage there first.
#16
Re: Thorough guide on hardwiring 92' fuel pump?
I just checked the voltage going to the yel/grn wire by the main relay when the Key is turn to On (II) and it reads 11.98 for about 2 seconds corresponding with cel. Pretty much 12v's so that's working as it should right?
#17
Re: Thorough guide on hardwiring 92' fuel pump?
Now do the same voltage test at the Yel/Grn wire pin of C415.
#18
Re: Thorough guide on hardwiring 92' fuel pump?
Which plug is C551? it's kind of a mess down there. I see a yellow/green wire in this one plug but it doesn't plug up anywhere.
#19
Re: Thorough guide on hardwiring 92' fuel pump?
Post clear picture from different angles. C415 is a 14 pin connector. It is on the main harness side and connects to C551, which is on the floor harness side.
#21
Re: Thorough guide on hardwiring 92' fuel pump?
That^ doesn't behave like the correct wire and connector. Post pictures.
Trace the Yel/Grn wire from the main relay to the next plug, which is probably somewhere below the main relay.
You are looking for a 14 pin connector, which can accomodate as many as 14 wires.
The fuel pump wire is at pin 4 of C415.
Trace the Yel/Grn wire from the main relay to the next plug, which is probably somewhere below the main relay.
You are looking for a 14 pin connector, which can accomodate as many as 14 wires.
The fuel pump wire is at pin 4 of C415.
#22
Re: Thorough guide on hardwiring 92' fuel pump?
Alrighty, I'm going to trace that wire down right now and post pictures. I should be getting a 2 second 12v reading I'm assuming? Also Ron, would it help if you knew that i succesfully got the fuel pump to prime a while back ( Month and 1/2 ago) for a week or sso and stopped out of nowhere. The car sits alot as it is a project.
#23
Re: Thorough guide on hardwiring 92' fuel pump?
I posted a diagram for C415. This should help you recognize it.
Also Ron, would it help if you knew that i succesfully got the fuel pump to prime a while back ( Month and 1/2 ago) for a week or sso and stopped out of nowhere. The car sits alot as it is a project.
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93FlatBlackHatch
Honda Civic / Del Sol (1992 - 2000)
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12-30-2006 03:22 PM