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Injectors are not grounding.. where in the pcm do they ground from?

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Old 03-03-2008, 07:00 PM
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computer will be shipped back to you in the morning, at least you can rule out vats and i tested it on another ls1 swap vehicle and it fired right up so you know the pcm is good.
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Old 03-04-2008, 12:12 PM
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Excellent! Thanks Jay.
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Old 03-06-2008, 11:28 AM
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Hey Jay I got the pcm. Thanks again man! Still doesnt work. I am gonna go get a noid light today and check that and if all is good then I know it is my injectors
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Old 03-06-2008, 12:11 PM
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that is the next step, you should be able to get a noid light set from any local parts store like autozone
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Old 03-06-2008, 01:13 PM
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Yea I will head by there tonight. I hope the noid light shows pulse so that way I know it is my injectors
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Old 03-07-2008, 01:58 PM
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what did ya find?
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Old 03-08-2008, 05:44 PM
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Ok got a noid light and they work great. So i am guessing either bad injectors or clogged injectors. Who can clean them or test them?
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Old 03-08-2008, 07:57 PM
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http://www.rceng.com/Fuel-Injector-Cleaning-P43C0.aspx
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Old 03-08-2008, 09:26 PM
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Wow thats expensive. Thanks though man
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Old 03-08-2008, 10:02 PM
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This may be a dumb question but have you checked fuel pressure to make sure the pump is running? The injectors may be firing but is any fuel even getting to them?
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Old 03-09-2008, 11:33 AM
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Fuel is to the rails with correct pressure yes
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Old 03-09-2008, 11:52 AM
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Originally Posted by 95GreenZ28
Wow thats expensive. Thanks though man

It's a little expensive but still a lot cheaper than new, or even most used, injectors and you know they are right when they come back.
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Old 03-09-2008, 12:10 PM
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Thats true but I cant spend that much on stock injectors. I can get a good set of 30#s for that. I just ordered a stock set fresh out of a running ls1 so hopefully they will work
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Old 03-09-2008, 07:51 PM
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Originally Posted by 95GreenZ28
Ok got a noid light and they work great. So i am guessing either bad injectors or clogged injectors. Who can clean them or test them?
I thought you said you had them cleaned? Tap on them with a brass punch and hammer.
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Old 03-09-2008, 07:51 PM
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I had two sets and I accidentally sold my cleaned set and kept these
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Old 03-09-2008, 07:52 PM
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tap on them where?
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Old 03-09-2008, 07:53 PM
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Originally Posted by 95GreenZ28
Does anyone know? i did a ls1 swap into my 95 and everything works great except I cant get the injectors to open up. They were cleaned when I bought them as well. I though it might be the vats but it wasnt. What wire from the pcm grounds the injectors? Anyone know? Thanks in advance
Originally Posted by edcmat-l1
I would check with a "noid" light. I have seen many times, after cleaning injectors, them not opening. I think its from the pintle and seat being so clean they kind of jam together. I seen it many times. If this is the case, the easiest thing to do is to buzz the injectors with a buzz box and tap on them with a brass punch and hammer.
First thing you have to determine though is if indeed you do or do not have an injector "pulse".
Just in case you need a refresher..................
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Old 03-09-2008, 07:55 PM
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Right on the side of them, as someone is cranking it. They need to be activated while you're tapping on them.
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Old 03-09-2008, 10:07 PM
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I knew i said that. I accidentally sold the wrong set so these have not been cleaned
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Old 03-12-2008, 09:19 AM
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to the top. replacing the injectors today so we will see what happens
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