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

fuel pump doesn't always prime

Thread Tools
 
Search this Thread
 
Old 04-03-2014, 03:18 PM
  #1  
Honda-Tech Member
Thread Starter
 
_MMR_'s Avatar
 
Join Date: Jan 2014
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Default fuel pump doesn't always prime

Hey guys, I have a 94 si, z6, no mods under the hood. I went to drop off my daughter this morning at her mom's and when I went to turn my car back on it would crank but not turn over. I tried starting it a few time's and realized I wasn't hearing the fuel pump prime. I kept turning the key off and half on about 10 times and still couldn't hear it prime. I waited a few minutes tried again, I could hear it prime, the car started, and no troubles for the rest of the day.

This has happened a couple times before, maybe 3 times in the last 4-5 months. I haven't been able to really look at anything in my car yet but I was hoping someone might have some insight into what the problem might be.

Thanks for any and all help
Old 04-04-2014, 12:45 AM
  #2  
Honda-Tech Member
Thread Starter
 
_MMR_'s Avatar
 
Join Date: Jan 2014
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Default Re: fuel pump doesn't always prime

Up
Old 04-04-2014, 01:55 AM
  #3  
Honda-Tech Member
 
carlos8's Avatar
 
Join Date: Jun 2009
Location: Puerto Rico
Posts: 1,127
Likes: 0
Received 1 Like on 1 Post
Default Re: fuel pump doesn't always prime

If you not hear the pump priming and the click when turn the switch to ONII. Sound like the main relay is given up. Remove it and check for cracked or to little solder at pins, or try a friend one or buy one from a junk yard.

You can resold the pins:

http://techauto.awardspace.com/mainrelay.html
Old 04-04-2014, 05:29 AM
  #4  
Honda-Tech Member
 
egsleepercivic's Avatar
 
Join Date: Nov 2003
Location: The South
Posts: 3,419
Received 22 Likes on 20 Posts
Default Re: fuel pump doesn't always prime

this sounds like a classic main relay issue for these cars, get the relay re soldered or get a new relay

if you want to be sure pull the rear seat next time it doesn't start and check for 12v at the pump
Old 04-04-2014, 10:05 AM
  #5  
Honda-Tech Member
 
harley4jcs's Avatar
 
Join Date: Sep 2007
Location: New Braunfels, Tx, USA
Posts: 63
Likes: 0
Received 1 Like on 1 Post
Default Re: fuel pump doesn't always prime

Originally Posted by carlos8
If you not hear the pump priming and the click when turn the switch to ONII. Sound like the main relay is given up. Remove it and check for cracked or to little solder at pins, or try a friend one or buy one from a junk yard.

You can resold the pins:

http://techauto.awardspace.com/mainrelay.html
I'm dealing with the exact issue: See my post "95 DelSol NO START" I now own 3 Main relays, All act the same at the same time. I'm on a different ECU with no change !! NOW Looking for help running down the wiring system from the Ing Key to the M/R thru ECU
Old 04-04-2014, 10:21 AM
  #6  
Honda-Tech Member
 
95Sedan's Avatar
 
Join Date: Jun 2013
Posts: 247
Likes: 0
Received 0 Likes on 0 Posts
Default Re: fuel pump doesn't always prime

get a fuel pump relay... they internally fail...

sometimes work and don't if you can wait get it offline if not you'll be paying 60$ from advanced or some BS
Old 04-04-2014, 10:50 AM
  #7  
Technical Hero
 
HondaPartsHero's Avatar
 
Join Date: May 2002
Location: Charlotte, NC, 28227
Posts: 9,876
Likes: 0
Received 28 Likes on 20 Posts
Default Re: fuel pump doesn't always prime

also check, clean and tighten your thermostat ground
Old 04-05-2014, 11:00 AM
  #8  
Honda-Tech Member
 
harley4jcs's Avatar
 
Join Date: Sep 2007
Location: New Braunfels, Tx, USA
Posts: 63
Likes: 0
Received 1 Like on 1 Post
Default Re: fuel pump doesn't always prime

If you will read thru my post mentioned earlier you should gain some insight. Tom Cat just posted a complete check list for me.
Old 04-05-2014, 11:14 AM
  #9  
Hysterically Calm
 
TomCat39's Avatar
 
Join Date: Jan 2013
Posts: 10,382
Received 562 Likes on 481 Posts
Default Re: fuel pump doesn't always prime

These are the No Start diagnostics posts from the FSM that Harley is talking about. Some of it may be helpful for you to isolate your no prime situation.

This post.
This post.
This post.
This post.
This post.
This post.

In your case, I would probably start with the main relay page first to rule that out, after that start at the beginning. Honda has a thorough routine to find the exact issue.

Good luck
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Nicholas Harvey
Honda Accord (1990 - 2002)
2
07-16-2013 01:55 AM
2000-em1
Honda Civic / Del Sol (1992 - 2000)
4
06-06-2012 07:08 PM
CivicHP
Honda Civic / Del Sol (1992 - 2000)
9
07-15-2007 11:46 PM
spettinger
Honda Civic / Del Sol (1992 - 2000)
3
05-25-2005 11:46 AM
XzzYzzX
Honda Civic / Del Sol (1992 - 2000)
5
07-31-2004 08:13 AM



Quick Reply: fuel pump doesn't always prime



All times are GMT -8. The time now is 07:47 PM.