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5.3 truck cutting out and wot issues

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Old Jun 1, 2011 | 04:21 PM
  #21  
BlackZLS1
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It does show, but im not sure if it was indicating any kr or not. Ill have to go check it again and see.
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Old Jun 1, 2011 | 04:21 PM
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Originally Posted by BlackZLS1
On the reman ecu's, could I still be able to use a handheld to adjust parameters as needed? Or any other tuned ecu for that matter? Like id like to get one tuned for what I got now (shorter tires and stuff) but id like to be able to still change it down the road with a predator tuner or somethin. I've got a predator for my ls1, and I like it.
All they do is open them, clean them, verify all circuits work correctly and then flash them with the correct factory calibrations to your vehical. So yes, You can still use a power programmer. There not locked if thats what your asking.
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Old Jun 1, 2011 | 04:23 PM
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Originally Posted by BlackZLS1
It does show, but im not sure if it was indicating any kr or not. Ill have to go check it again and see.
Some of these trucks had a phantom knock issue that would POP up and pull timing. No one really knows why. Hence the phantom term....
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Old Jun 1, 2011 | 04:26 PM
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Im thinkin about swapping the ecu and seeing what happens. Im gonna see if the local salvage has one, if not I found one on ebay for 69 bucks. Is there any year range to look for, for a 99? Or certain model numbers to look for?
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Old Jun 1, 2011 | 04:27 PM
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And yes that is the valve I was talking about early, but no its not responsible for your issue.
I'm on a smart phone so some how things got all jumbled around...
Last edited by 1FastBrick; Jun 1, 2011 at 10:15 PM.
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Old Jun 1, 2011 | 04:31 PM
  #26  
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Haha so am I! Its ok though, im pickin up everything your puttin down. And I really do appreciate your help with this. We'll get it ironed out eventually.
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Old Jun 1, 2011 | 04:33 PM
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have you ruled out a knock sensor??? mine went bad on my truck and it pulled timing and fuel...didnt run rough but was really weak..maybe being a older model truck might make it react differently...ive herd that the trucks are notorious for it. usually the rear one
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Old Jun 1, 2011 | 04:35 PM
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Originally Posted by BlackZLS1
Im thinkin about swapping the ecu and seeing what happens. Im gonna see if the local salvage has one, if not I found one on ebay for 69 bucks. Is there any year range to look for, for a 99? Or certain model numbers to look for?
Yes, un hook the ecu and flip it over. There should be a service tag with a number on it. Will say something like service number and hardware number. The one you want should be 09354896 for 99-00 models and it needs to have a similar calibration in it from an 8 cyl. Make sure that is the same number on your ecu.
Last edited by 1FastBrick; Jun 1, 2011 at 04:46 PM.
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Old Jun 1, 2011 | 05:36 PM
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Ok I went and got one with the same service number and harware number as mine, but the truck won't run due to anti-theft???
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Old Jun 1, 2011 | 05:42 PM
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P1631 fault code
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