B18b1 Crx Wont Start..

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Old Mar 2, 2012 | 06:28 PM
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Post B18b1 Crx Wont Start..

Is there a way I can test my main relay.?. Did my swap and ground wires all connected but don't seem to get power to the ecu and fuel pump is not turning on.
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Old Mar 2, 2012 | 08:12 PM
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From: joplin, mo, us
Default Re: B18b1 Crx Wont Start..

take the main relay out and open it out, if you dont have good eye sight i'd get a magnifying glass look at the soldering points and sometimes if they have even the slightest crack or hairline crack it could be bad.. if you are any good at soldering just heat up the solder points and add some solder and it will work just fine.. thats if the main relay is even bad. there are ways to check it with a volt/ohm meter tho
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Old Mar 3, 2012 | 02:06 PM
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Default Re: B18b1 Crx Wont Start..

Originally Posted by 88_hatch_ls
take the main relay out and open it out, if you dont have good eye sight i'd get a magnifying glass look at the soldering points and sometimes if they have even the slightest crack or hairline crack it could be bad.. if you are any good at soldering just heat up the solder points and add some solder and it will work just fine.. thats if the main relay is even bad. there are ways to check it with a volt/ohm meter tho
Thanks for the info well I tried a new realay and that wasnt the problem...i rechecked my grounds and they where good but still no power to the ecu or fuel pump...
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Old Mar 3, 2012 | 02:11 PM
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From: joplin, mo, us
Default Re: B18b1 Crx Wont Start..

I know it sounds stupid and redundant but I would check and double check ALL fuses inside and out
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Old Mar 3, 2012 | 02:50 PM
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Default Re: B18b1 Crx Wont Start..

1st fuse I'd check is the 15A ECU fuse in the engine bay.
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Old Mar 3, 2012 | 03:05 PM
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From: Clarksville, TN, USA
Default Re: B18b1 Crx Wont Start..

I know this is a little late but it may be helpful for someone

How to test the main relay:
https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/checking-main-relay-pics-2535047/
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Old Mar 3, 2012 | 05:47 PM
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Default Re: B18b1 Crx Wont Start..

Originally Posted by 88_hatch_ls
I know it sounds stupid and redundant but I would check and double check ALL fuses inside and out
Yea I'm gonna do that hopefully its a blown fuse
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Old Mar 3, 2012 | 05:48 PM
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Default Re: B18b1 Crx Wont Start..

Originally Posted by crvtectim
1st fuse I'd check is the 15A ECU fuse in the engine bay.
15 looks fine not blown at all
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Old Mar 3, 2012 | 05:48 PM
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Default Re: B18b1 Crx Wont Start..

Originally Posted by Justin91CRXSi
I know this is a little late but it may be helpful for someone

How to test the main relay:
https://honda-tech.com/forums/showthread.php?t=2535047
Thanks for the info gonna go check it rite now
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