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Injectors not getting fire

Tiny
KIMBERLYFARLEY
  • MEMBER
  • 1998 KIA SPORTAGE
  • 64,000 MILES
I have a 98 kia sportage with a 2.0 4x4. Recently parked it thinking the fuel pump was going out on it, replaced fuel pump and it wouldnt start. Found out that there wasnt any power going to the fuel pump or to the injectors. Have checked all the fuses they are all fine. I can get it to start only by taking the air intake off and spraying starter fluid in but the minute I quit it dies so I know its not an ignition problem. I ran the fuel pump direct just to see if it would come on and it did but of course still wont start. I have checked all the wires coming out of the ecu with a test light all of them are fine. I am loosing power somewhere between there and the injectors. Does anyone have any ideas? Please help
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Monday, September 3rd, 2012 AT 4:07 AM

20 Replies

Tiny
KHLOW2008
  • MECHANIC
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WAs the Check Engine Light showing prior to this?
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Monday, September 3rd, 2012 AT 1:55 PM
Tiny
KIMBERLYFARLEY
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  • 6 POSTS
The check engine light has stayed on in this since it had 23000 miles on it and it didn't throw any codes then so I'm not sure if it did before it quit running or not. The ground on the injectors is fine its the other wire that is not getting power on any of the injectors.
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Thursday, September 6th, 2012 AT 11:11 PM
Tiny
SATURNTECH9
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One side should have a plusing ground while cranking the other side of the connector should have power with the key in the run position.
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Thursday, September 6th, 2012 AT 11:34 PM
Tiny
KIMBERLYFARLEY
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  • 6 POSTS
That's the problem the ground is working like it's suppose to but the other wire has no power with the key on or while it's cranking on any of the injectors and I have no idea why.
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Friday, September 7th, 2012 AT 12:15 AM
Tiny
SATURNTECH9
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Have you made sure you have power to both sides of the injector fuse with the key in the run position?
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Friday, September 7th, 2012 AT 12:27 AM
Tiny
KIMBERLYFARLEY
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Yes and it does have power there I guess it's loosing power somewhere between the fuse box and the injectors
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Friday, September 7th, 2012 AT 1:04 AM
Tiny
KHLOW2008
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If the MIL is indicating without any trouble codes, you need to be checking why. It can mean a bad PCM or its grounding circuit. It could be the cause of the injectors not working.

The other thing is I believe you are doing the testings wrongly.

The injectors have two wires each, one green on all inkectors and the other would be either Green/Black, White/Green, White/Blue or BlackGreen, depending on cylinder.

Are you using a testlight or DVOM?
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Friday, September 7th, 2012 AT 2:20 AM
Tiny
SATURNTECH9
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I already tried to explain this one to them if there is no power to injectors that's not the ecm. That would be a wiring issue.
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Friday, September 7th, 2012 AT 2:23 AM
Tiny
KHLOW2008
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Saturntech9, my inkling is that between power supply and ground, there is a mix-up. Lol
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Friday, September 7th, 2012 AT 2:28 AM
Tiny
SATURNTECH9
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That is possible lol check the power feed wire to the injectors key in the run position with the black wire on the meter to the battery ground and the red wire from the meter to the battery feed to the injectors.
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Friday, September 7th, 2012 AT 2:39 AM
Tiny
KIMBERLYFARLEY
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  • 6 POSTS
I have used a noid light a test light and an oms meter and I tested it the same wad as you said and the response is the same everytime nothing. The ecu does have ground for the injectors. The injectors do pulse just no power
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Friday, September 7th, 2012 AT 3:06 AM
Tiny
SATURNTECH9
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Then see if you have power coming right out of the fuse box going to the injectors.
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Friday, September 7th, 2012 AT 3:31 AM
Tiny
KIMBERLYFARLEY
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I do have power coming from the fuse box to the injectors
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Friday, September 7th, 2012 AT 3:36 AM
Tiny
KHLOW2008
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The EFI main relay supplies power to the fuel pump, injectors, camsensors and a host of other components.

At the EFI main relay, test for battery voltage at terminal #5 (green wire) for battery voltage while cranking. If battery voltage is not available, probe terminal # 2 with positive probe of DVOM set to ohmns and ground the other terminal. Crank engine, if continuity exist, replace the relay. If ground does not exist, check for continuity between terminal to PCM terminal # 27, main relay control. If contuinity exist, replace PCM.
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Friday, September 7th, 2012 AT 3:42 AM
Tiny
KHLOW2008
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Refer to diagram.
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Friday, September 7th, 2012 AT 3:43 AM
Tiny
SATURNTECH9
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Wrong diagram vechile my friend.
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Friday, September 7th, 2012 AT 4:36 AM
Tiny
KHLOW2008
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Lol
Thanks for pointing that out.
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Friday, September 7th, 2012 AT 4:40 AM
Tiny
SATURNTECH9
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Your welcome anytime someone has to keep you in line lol.
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Friday, September 7th, 2012 AT 4:43 AM
Tiny
KHLOW2008
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Am I running off the leash? Seems we are the ones answering ourselves, lol
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Friday, September 7th, 2012 AT 4:49 AM
Tiny
SATURNTECH9
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That does happen sometimes lol.
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Friday, September 7th, 2012 AT 3:59 PM

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