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Old 08-10-2011, 07:31 AM   #1
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Icon3 Car Occasionally Won't Start, no check engine light.

Intro:I have a 1993 Honda Del Sol with a 1997 Acura Integra GS-R swapped in. My problem with getting my car to turn on began on 08/08/11. The car has not had any problems and was running amazingly. There is no engine light going on. This car was sitting for about Six months without any real driving. But I recently did a engine and transmission oil and change. New spark plugs, and I will be changing the spark plug wires, distributor cap and rotor, and fuel filter soon.

Diagnosis: I turned the key and listen for the fuel pump to prime. If it doesn't prime the car cranks but wont turn on. If I wait about 30 minutes or so and I try again the car sometimes obeys and comes to life. After trying the first time and the car doesn't start any attempts after just cause the engine to turn over more but it still doesn't start.

Questions:1) Is this a sign my fuel pump is going out?
2) If my fuel pump is going out can I replace it with a walbro 255 and be good to go with a stock fuel filter, fuel rail, and injectors?
3) Would a fuel filter cause my car to not start?
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Old 08-10-2011, 07:38 AM   #2
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Default Re: Car Occasionally Won't Start, no check engine light.

http://techauto.awardspace.com/mainrelay.html
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Old 08-10-2011, 07:45 AM   #3
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Default Re: Car Occasionally Won't Start, no check engine light.

I been wondering about that myself. Are those relays much to replace if somethin gets fawked up soldering it?
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Old 08-10-2011, 07:47 AM   #4
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Default Re: Car Occasionally Won't Start, no check engine light.

Wow sounds like you just solved my problem Thank you, Would I be able to just replace the main relay? I don't trust my soldering lol. I'm now looking on rockauto.com, does the main relay go by another term?

Last edited by Benito89; 08-10-2011 at 08:08 AM.
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Old 08-10-2011, 08:36 AM   #5
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Default Re: Car Occasionally Won't Start, no check engine light.

You can buy new main relay, if you wish. I always post the resoldering fix as it's the cheapest road to solve the issue.
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Old 08-10-2011, 11:17 AM   #6
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Default Re: Car Occasionally Won't Start, no check engine light.

The main relay costs anywhere from $40-$60. I just pulled mine out today and re-soldered the posts. It is really super easy man! Even if you suck at soldering.
http://www.marklamond.co.uk/tech-hon...main-relay.htm
This link tells you the EXACT posts that go wrong too.
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Old 08-10-2011, 02:00 PM   #7
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Default Re: Car Occasionally Won't Start, no check engine light.

definitley main relay had same problem get it new from dealer its about $80 no spark no fuel just doesnt turn over definitly main relay
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Old 08-10-2011, 03:43 PM   #8
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Default Re: Car Occasionally Won't Start, no check engine light.

Quote:
Originally Posted by kingjames0509 View Post
definitley main relay had same problem get it new from dealer its about $80 no spark no fuel just doesnt turn over definitly main relay
Sweet, do you know where else I can pick up a main relay? I found one a site that was 60 bucks but lost the link.
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Old 08-10-2011, 03:45 PM   #9
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Default Re: Car Occasionally Won't Start, no check engine light.

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You can buy new main relay, if you wish. I always post the resoldering fix as it's the cheapest road to solve the issue.
the following link is the website i found that has a few relays im kinda confused over the whole 7 pin mitsuba rz-0132 and the RX-0159... last bit of help please and thank you?
http://www.overnightautoparts.com/st...t=main%20relay

Last edited by Benito89; 08-10-2011 at 09:39 PM.
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Old 08-11-2011, 07:40 AM   #10
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Default Re: Car Occasionally Won't Start, no check engine light.

as far as the main relay, what all does it control? just efi function? start? fuel pump?
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Old 08-11-2011, 07:55 AM   #11
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Default Re: Car Occasionally Won't Start, no check engine light.

^All of the above.

As far as buying one, most local parts stores carry them.
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Old 08-11-2011, 07:31 PM   #12
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Default Re: Car Occasionally Won't Start, no check engine light.

starter has no relation to this main relay.
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Old 08-12-2011, 06:14 AM   #13
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Default Re: Car Occasionally Won't Start, no check engine light.

Huh. I thought it did. My bad.
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