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

94 civic fuel pump sometimes won't prime

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Old Jun 12, 2012 | 02:23 PM
  #1  
GregB's Avatar
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Icon2 94 civic fuel pump sometimes won't prime

We just got my daughter a 94 Civic 2 door hatch....replaced the coil and ICM...now it runs great ...... but when we start it cold (Houston TX cold) it just turns over.... We have been turning the key on and off with the clutch out until we hear the fuel pump kick in....then it starts .... but it doesn't do it on the first few tries...The old owners said the fuel pump is new...any ideas....Thanks Greg
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Old Jun 13, 2012 | 05:49 AM
  #2  
virgineg6's Avatar
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From: Fallbrook,Ca
Default Re: 94 civic fuel pump problems

Main relay may be going bad.
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Old Jun 13, 2012 | 08:11 AM
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Default Re: 94 civic fuel pump problems

Fuel pump failure is relatively uncommon.

Originally Posted by virgineg6
Main relay may be going bad.
This^

The main relay can be resoldered:

http://techauto.awardspace.com/mainrelay.html

Also thoroughly clean (wire brush and steel wool) and tighten the G101 ground connection on the thermostat housing.

If these^ don't help, then you may need to replace the ECU.
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Old Jun 13, 2012 | 09:15 AM
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alston3ptswish's Avatar
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Default Re: 94 civic fuel pump sometimes won't prime

Main Relay as every1 else said. Will only get worse over time, so either buy a new one for 40-50 bucks or resolder it.
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Old Jun 14, 2012 | 02:35 PM
  #5  
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Default Re: 94 civic fuel pump sometimes won't prime

I talked to a Honda repair shop today .... he said I should take it to a Honda dealer and have them run a check on the main computer ... He said they are the only ones that have that diagnostic tool they don't let private shops have use them....Has any one heard of this before? ... Thanks Greg
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Old Jun 14, 2012 | 02:48 PM
  #6  
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From: Charlotte, NC, 28227
Default Re: 94 civic fuel pump sometimes won't prime

No its the main relay almost guaranteed, click the link in ron's post and diagnose it yourself.
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