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P0300 1998 k1500 5.7l kicking my a@@


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goosecrane
User

Jan 20, 2015, 6:42 PM

Post #1 of 16 (1967 views)
P0300 1998 k1500 5.7l kicking my a@@ Sign In

Ok guys, I need help.i have been working on a 1998 k1500 5.7l. Reman engine approx 1 year ago. Ongoing problem with p0300. Code was not initially there upon engine install. I have replaced dist, plugs, wires, ignition module, coil, may sensor,spider inj, and just replaced spider injector again. I cannot figure this one out. Code comes on almost instantly at idle, but when cleared and driven, will not come on, until parked at idle again. Engine does not appear to have an actual miss. If so it is very slight at idle. Any suggestions?


(This post was edited by goosecrane on Jan 30, 2015, 6:54 AM)


Hammer Time
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Jan 20, 2015, 6:49 PM

Post #2 of 16 (1964 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

Do you have any other codes stored, like maybe a P1345?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



goosecrane
User

Jan 20, 2015, 6:51 PM

Post #3 of 16 (1960 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

No other codes. I forgot I also just replaced plugs, and crank sensor. The crank sensor did go out recently, and I rolaced sensor, and wiring conn.


Hammer Time
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Jan 20, 2015, 6:56 PM

Post #4 of 16 (1957 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

What brand plugs did you use?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
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Jan 20, 2015, 6:59 PM

Post #5 of 16 (1955 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

Did you do a crank sensor relearn? You need a high end scan tool to do that. Puter could be setting false misfire code(s).





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goosecrane
User

Jan 20, 2015, 7:03 PM

Post #6 of 16 (1950 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

I believe it was auto lite platinums. I did not know about the crank sensor relearn. My scanner will not do that. Do you think that's what it is?


Tom Greenleaf
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Jan 20, 2015, 10:43 PM

Post #7 of 16 (1923 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

? Seems to matter on this engine to use OE Delco only for plugs. Think the part # is AC 41993.

Go easy on handling plug boots and have the right tool - easy to damage wire boots this and many,


T



Discretesignals
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Jan 21, 2015, 5:21 AM

Post #8 of 16 (1911 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

If you don't feel any misfiring going on, but the puter is firing off misfire codes, do you think spark plugs are going to solve anything?

You really should swing it into a shop that has the capability to do a crankshaft variation relearn and see if that solves your issue.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


goosecrane
User

Jan 21, 2015, 9:10 AM

Post #9 of 16 (1900 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

Thanks man. I'm going to try this first. I had no idea of this issue.


goosecrane
User

Jan 22, 2015, 11:35 AM

Post #10 of 16 (1883 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

If I decided to purchase such a programmer, does anyone know of reasonably priced model, or what to look for.


Hammer Time
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Jan 22, 2015, 2:20 PM

Post #11 of 16 (1880 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

That depends on what you consider reasonable. The Snap-on version starts about $4,000.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



goosecrane
User

Jan 22, 2015, 4:17 PM

Post #12 of 16 (1875 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

Ge hat about the alimony adapters for laptop computer. Are there programs out there with that capability?


Hammer Time
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Jan 22, 2015, 4:20 PM

Post #13 of 16 (1874 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

There are professional laptop driven, software setups out there but you are still going to spend a couple grand to get to this level.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
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Jan 22, 2015, 5:41 PM

Post #14 of 16 (1871 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

You can probably swing into any repair shop and have them do it for you. It would be a lot cheaper.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


goosecrane
User

Jan 30, 2015, 6:58 AM

Post #15 of 16 (1842 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

Update...ok I have been having trouble with this rebuilt long lock since initial install last March. No noises or anything, just crazy trouble codes. I had an appointment to get the crank sensor relearned, and 2 days before a rod suddenly knocked a whole in the oil pan. It seams I have been chasing ghosts this whole time. I putting a gm crate motor in next weekend. Should have went that route last year.


Discretesignals
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Jan 30, 2015, 5:36 PM

Post #16 of 16 (1834 views)
Re: P0300 1998 k1500 5.7l kicking my a@@ Sign In

Wow. Well, definitely has a misfire now. I'm not knocking all the aftermarket re manufactures but I've run into several engines that had issues. They tend to use the cheapest gaskets and whatever else to get it out of the facility. Hopefully GM factory remans are better about not cheaping out. We've done a couple of GM SERTAs and had really good luck, so far.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.






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