91 CRX SI Wiring issue???

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Old Apr 3, 2013 | 06:46 PM
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FloMotion's Avatar
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Icon6 91 CRX SI Wiring issue???

OK so my previous problems i had with the ecu were codes 6, 10, and 20.... i seemed to have fixed those with new sensors and a new battery! now my final problems:

Fuel Gauge always reading empty
Fuel pump not wanting to prime consistantly! (in fact it seems it doesnt wanna prime most of the time but i do get lucky with a prime here and there)
I replaced the fuel sending unit today but still no success! Im thinking its possibly a wiring issue? Please help!
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Old Apr 3, 2013 | 07:06 PM
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Default Re: 91 CRX SI Wiring issue???

I don't know the history of your project. Is it a car that you have owned previously?

If you know that the fuel gauge was working before _______ modification, then I would check the wiring troubleshooting in the FSM at xxxxxxxxxxxx.

If you do NOT know for sure that the gauge was working before you started ______ modification, then start with the gauge itself. Usually, you can test a gauge by applying 12v or ground. Directly applying the right signal usually makes the needle go to FULL. This will confirm that the gauge DOES work before you spend alot of time searching for a wiring problem.

Last edited by jdm_rb20; Apr 7, 2013 at 04:33 PM.
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Old Apr 3, 2013 | 09:14 PM
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Default Re: 91 CRX SI Wiring issue???

Fuel pump wanting to prime, not priming or works intermittently is usually the cause of the Main relay going bad. For your fuel gauge you should check the wiring to make sure its hooked up and not cut or crimped somewhere. You might have a bad cluster.
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Old Apr 4, 2013 | 11:45 PM
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FloMotion's Avatar
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Default Re: 91 CRX SI Wiring issue???

i talked to a fellow employee i work with at lordco and he told me the same thing about it being a relay! im gonna check it out as soon as i can. unfortunately its very wet weather out and i have to keep my car under tarp
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Old Apr 5, 2013 | 06:05 AM
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Default Re: 91 CRX SI Wiring issue???

The gauge could be a few things. Cluster itself, wiring, or sending unit. Just have to try to work at one end and work down the line. The main relay sounds like it will eleviate your other issue
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Old Apr 7, 2013 | 04:18 PM
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Default Re: 91 CRX SI Wiring issue???

*UPDATE*
Okay so i just installed a new AIT sensor, Coolant temp sensor, the fuel sending unit, and i resauderd all the cracked saudering joints!

SOLVED: My Fuel pump is now priming everytime!!! im very happy about this!

New/same problems: Now i seem to be getting codes 6, 10, and 20!
The car wont start still.... it primes and cranks but doesnt wanna fire up..

I had gone to the pick e part and took a coil from an integra and put it in the DOHC ZC distributer and so maybe this is whats giving me the code? the coil seemed to fit fine all the wires and connectors were the same?

and yes im running a PM7 ECU...

Last edited by FloMotion; Apr 8, 2013 at 07:00 PM.
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Old Apr 8, 2013 | 06:59 PM
  #7  
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Default Re: 91 CRX SI Wiring issue???

bump
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Old Apr 8, 2013 | 07:41 PM
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From: Texarkana, AR, USA
Default Re: 91 CRX SI Wiring issue???

Originally Posted by jdm_rb20
I don't know the history of your project. Is it a car that you have owned previously?

If you know that the fuel gauge was working before _______ modification, then I would check the wiring troubleshooting in the FSM at xxxxxxxxxxxx.

If you do NOT know for sure that the gauge was working before you started ______ modification, then start with the gauge itself. Usually, you can test a gauge by applying 12v or ground. Directly applying the right signal usually makes the needle go to FULL. This will confirm that the gauge DOES work before you spend alot of time searching for a wiring problem.
I still don't know the history of your project? Did you buy it as-is? Did it suddenly throw all these codes?? I would start by searching for "Honda ECU codes" on Google. There is even a free Android app called Honda database...
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Old Apr 8, 2013 | 07:50 PM
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From: West Palm Beach, FL
Default Re: 91 CRX SI Wiring issue???

Originally Posted by jdm_rb20
I don't know the history of your project. Is it a car that you have owned previously?

If you know that the fuel gauge was working before _______ modification, then I would check the wiring troubleshooting in the FSM at xxxxxxxxxxxx.

If you do NOT know for sure that the gauge was working before you started ______ modification, then start with the gauge itself. Usually, you can test a gauge by applying 12v or ground. Directly applying the right signal usually makes the needle go to FULL. This will confirm that the gauge DOES work before you spend alot of time searching for a wiring problem.
This. Apply a 12v or Ground and make sure your fuel gauge works.
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