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95 civic wont start. No injector pulse

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Old 01-07-2012, 07:42 PM
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Default 95 civic wont start. No injector pulse

Ive got a 95 civic cx with a b18 swap. I am having a no start issue. It has good spark, and will start with starting fluid. I checked the timing and it is good. My ecu is good. Pump will prime and everything but the injectors wont spray fuel. I heard there were ground for the injectors. Where are they? Can they be cleaned. Thanks.
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Old 01-07-2012, 07:45 PM
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Default Re: 95 civic wont start. No injector pulse

Test for continuity to body ground at A24, A23, A26, and B2 in the ECU connectors.

Do all 4 injector clips have battery voltage with the key in ON(II)?

Last edited by Former User; 01-12-2012 at 12:19 PM.
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Old 01-07-2012, 07:45 PM
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Default Re: 95 civic wont start. No injector pulse

Oh yeah, forgot to mention, all four injectors have solid 12v on the yellow/black wire. Just no grounding is occuring to make them open.
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Old 01-07-2012, 07:46 PM
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Default Re: 95 civic wont start. No injector pulse

how would i test them?
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Old 01-07-2012, 07:49 PM
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Default Re: 95 civic wont start. No injector pulse

Unplug ECU connectors A and B. Use a multimeter set either to test for continuity or to measure Ohms on the lowest scale.
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Old 01-07-2012, 07:52 PM
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Default Re: 95 civic wont start. No injector pulse

Ok, ill grab one at work tomorrow. If there is no continuity what would i have to do?
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Old 01-07-2012, 07:55 PM
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Default Re: 95 civic wont start. No injector pulse

Originally Posted by civic89si666
Ok, ill grab one at work tomorrow. If there is no continuity what would i have to do?
There's a broken wire that must be fixed.
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Old 01-12-2012, 10:42 AM
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Default Re: 95 civic wont start. No injector pulse

Where should I test the other side of these wires? I have a continuity tester, I just don't know where the other end of the wires are to test them.
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Old 01-12-2012, 10:51 AM
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Default Re: 95 civic wont start. No injector pulse

Originally Posted by civic89si666
Where should I test the other side of these wires? I have a continuity tester, I just don't know where the other end of the wires are to test them.
Test for continuity to body ground at A24, A23, A26, and B2 in the ECU connectors.
http://www.phearable.net/tech/wiring...schematics.gif

.

Last edited by Former User; 01-12-2012 at 01:07 PM.
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Old 01-12-2012, 10:57 AM
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Default Re: 95 civic wont start. No injector pulse

Also check whether the 4 injectors wires are properly pinned to the ECU:

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Old 01-12-2012, 11:19 AM
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Default Re: 95 civic wont start. No injector pulse

Ok, ill check them now.
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Old 01-12-2012, 11:59 AM
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Default Re: 95 civic wont start. No injector pulse

injector wires are good in the ecu. You said check for continuity to the body ground? Which ground? Anywhere on the body?
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Old 01-12-2012, 12:01 PM
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Default Re: 95 civic wont start. No injector pulse

Originally Posted by civic89si666
You said check for continuity to the body ground?...Anywhere metal on the body?
Yes
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Old 01-12-2012, 12:13 PM
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Default Re: 95 civic wont start. No injector pulse

Continuity is good. The one for te icm was a little dim but everything had the tester light up
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Old 01-12-2012, 12:17 PM
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Default Re: 95 civic wont start. No injector pulse

Originally Posted by civic89si666
The one for te icm was a little dim but everything had the tester light up
My mistake -- I should have written A24 not A22 (corrected). Test A24.

Last edited by Former User; 01-12-2012 at 01:08 PM.
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Old 01-12-2012, 12:25 PM
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Default Re: 95 civic wont start. No injector pulse

24 is good as well
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Old 01-12-2012, 12:29 PM
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Default Re: 95 civic wont start. No injector pulse

I also see that the injectors get their power from c125 which is that plug with the yellow and black wires all coming out of it right? Could I have possible messed them up while re-pinning my harness? Would that cause this issue?
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Old 01-12-2012, 12:30 PM
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Default Re: 95 civic wont start. No injector pulse

What makes you believe your ECU is fine?

Unplug ECU connector A and remove the 15A hood ECU fuse. With the key in ON(II), ground one of your injector ground wires. Does the injector make a click sound?
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Old 01-12-2012, 12:31 PM
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Default Re: 95 civic wont start. No injector pulse

Originally Posted by civic89si666
I also see that the injectors get their power from c125 which is that plug with the yellow and black wires all coming out of it right? Could I have possible messed them up while re-pinning my harness? Would that cause this issue?
You said earlier that your injector clips have battery voltage, right?

Is there continuity on the 4 injector ground wires between the injector clip and ECU connector A?
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Old 01-12-2012, 12:35 PM
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Default Re: 95 civic wont start. No injector pulse

I put in a friends ecu, it was a chipped p14 but he said it should have at least started the car. Ill do the test on the injectors in a minute. Just ground the wire that goes into the connector right?
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Old 01-12-2012, 12:39 PM
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Default Re: 95 civic wont start. No injector pulse

Originally Posted by civic89si666
Ill do the test on the injectors in a minute. Just ground the wire that goes into the connector right?
Do not unplug the injector from the connector. Just ground the injector ground wire.
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Old 01-12-2012, 02:27 PM
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Default Re: 95 civic wont start. No injector pulse

I figured it out. The plug with the four Injector wires was all messed up. It's all good and running. Thanks a ton man
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Old 01-12-2012, 03:16 PM
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Default Re: 95 civic wont start. No injector pulse

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Old 12-18-2012, 02:08 PM
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Default Re: 95 civic wont start. No injector pulse

hey mate i'm having the same problem with my 98 ek civic, ive tried everything and was wondering where the plug with the four Injector wires is located pleaxe help thanks
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Old 12-03-2015, 04:11 PM
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Default Re: 95 civic wont start. No injector pulse

Originally Posted by RonJ
Test for continuity to body ground at A24, A23, A26, and B2 in the ECU connectors.

Do all 4 injector clips have battery voltage with the key in ON(II)?
Was wondering if you could help trouble shoot this I have 12 volts to my injectors but my ecu is not putting out any signals from a1,a2,a3 or at I've checked and got ground and power to ecu yet no signal for ground to injectors
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