Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

How to test fuel pump?

Thread Tools
 
Search this Thread
 
Old May 10, 2010 | 09:37 AM
  #1  
Charlie Moua's Avatar
Thread Starter
Honda-Tech Member
iTrader: (3)
 
Joined: Feb 2002
Posts: 12,561
Likes: 0
From: MN
Default How to test fuel pump?

civic that won't start.

I've check/done so far:
-battery good
- full tank of gas
- have spark
- all fuse are good
- main relay good (even have 2 other spares ones)
- ECU ground good (located on thermostat)



I went to junkyard and got 2 more EG fuel pumps. I've swapped both in, still won't start.
I don't hear it prime (5-8sec when key is on IGN II).


Questions:

1) Is there a way to test fuel pump to make sure it's working?
2) is there a way to find out of fuel pump is getting POWER?

Reply
Old May 10, 2010 | 09:41 AM
  #2  
Former User's Avatar
Honda-Tech Member
 
Joined: Feb 2008
Posts: 45,214
Likes: 59
Default Re: How to test fuel pump?

You need a multimeter. Check whether voltage is received by the fuel pump on the power wire and that the fuel pump ground wire is good.
Reply
Old May 10, 2010 | 09:43 AM
  #3  
clean92ex's Avatar
Honda-Tech Member
 
Joined: May 2009
Posts: 54
Likes: 0
Default Re: How to test fuel pump?

when you turn your key on you should hear the fuel pump run. its a quiet whiny noise coming from under your back seat. if you dont hear it, take out the seat and put a meter on your fuel pump (under metal cover) and see if you have power. i'm not sure which wire its supposed to be, it's been awhile since i've worked on a honda fuel pump
Reply
Old May 10, 2010 | 09:56 AM
  #4  
Linked's Avatar
Honda-Tech Member
 
Joined: Mar 2009
Posts: 1,561
Likes: 1
From: Chicago SPLURGE, Il
Default Re: How to test fuel pump?

ylw/green wire provides power i believe
Reply
Old May 10, 2010 | 02:05 PM
  #5  
Charlie Moua's Avatar
Thread Starter
Honda-Tech Member
iTrader: (3)
 
Joined: Feb 2002
Posts: 12,561
Likes: 0
From: MN
Default Re: How to test fuel pump?

Originally Posted by Linked
ylw/green wire provides power i believe

I took the plate cover.
Now I have 1 connector plug going into the fuel pump
It has yellow wire with silver spots & another black wire with silver spots.

I'm assuming yellow/silver is power
black/silver is ground.


With my multimeter i bought at autzone, do I:

a) keep the connector plugged up to the fuel pump,
then stick red probe from multimeter to the inside of the yellow/silver connector & the black probe from mulitmeter to the black/silver connector?

or

b) keep the connector plugged up to the fuel pump,
red probe into yellow/silver
black probe touching chassie/ground


Thanks guys.
Reply
Old May 10, 2010 | 03:20 PM
  #6  
Former User's Avatar
Honda-Tech Member
 
Joined: Feb 2008
Posts: 45,214
Likes: 59
Default Re: How to test fuel pump?

1) Unplug the connector and measure voltage between the two plug terminals while a buddy turns the key to ON(II). Battery voltage should appear for 2 seconds.

2) If no voltage is detected, then do a similar voltage test where you measure voltage between the Yel wire terminal and body ground.
Reply
Old May 13, 2010 | 10:29 AM
  #7  
Charlie Moua's Avatar
Thread Starter
Honda-Tech Member
iTrader: (3)
 
Joined: Feb 2002
Posts: 12,561
Likes: 0
From: MN
Default Re: How to test fuel pump?

never mind... I forgot the car had kill switch... I just had to reset it.. lol
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
d_boi_swag
Honda CRX / EF Civic (1988 - 1991)
1
May 4, 2013 07:01 PM
briansrc
Tech / Misc
16
Jul 13, 2010 09:01 AM
iamtwan
Honda Accord (1990 - 2002)
3
Aug 10, 2009 11:53 AM
Jamison
Forced Induction
20
Jul 11, 2002 12:07 PM
Farnsrocket
Forced Induction
2
Nov 28, 2001 04:31 PM




All times are GMT -8. The time now is 11:16 AM.