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Darned P0300........

wingman

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wingman Enthusiast

wingman

Posted
Posted

Yippee! After what seems a lifetime I've rid myself of the flashing CEL! I have to thank all you guys with your experience and suggestions, It's done!

So, borrowed a Tech 2, and did a crank relearn. I didn't think at first to get the coolant up to temperature, so it wouldn't work for me, but after reading the Shop Manual (only read the manual if all else fails, haha) and getting to temp, it was a real simple deal to get it done.

So now I have what feels like a smoother motor, no CEL annoying the crap out of me, and BEST of all, a working TCC.

Boy I'm a happy guy!

So thanks again for a superior forum, and also to all you guys who have made this possible.

Kind regards, Paul.

  • 4 weeks later...
Dixon700 Enthusiast

Dixon700

Posted
Posted

Did you replace the crank sensor that it needed relearned? Or did it just get wonky after a bunch of mileage? I'm asking because my 6.0 is throwing a random misfire and haven't had a chance to see if replacing the spanked plugs fixed it due to my auto enginuity being out of date...

wingman Enthusiast

wingman

Posted
  • Author
Posted

Hi Adam,

I bought my truck a couple of years ago from the original owner when he moved here to the UK from Canada.

The CEL has been showing since I got it on the road when I went over 2000 revs. I thought try new plugs first. Made no difference, nor a new fuel filter, nor switching coils to follow the "misfires". Mileage at around 80k, so not high.

I shipped a new crank sensor from Rock Auto, genuine AC Delco.

I thought I'd try a relearn before tearing into changing the sensor. Lucky I did, as the relearn cured the problem immediately! The procedure is so straightforward with the Tech 2. I was lucky to borrow one from a buddy, and did it myself. Having the GM Service Manuals helps too.

I'd say get a relearn done first, before a sensor change, and see what happens.

Hope this helps. Best, Paul.

Dixon700 Enthusiast

Dixon700

Posted
Posted

I just need to update my auto enginuity then I should be able to do that with it. Unless I need the enhanced GM package... Then I'll have to spend a tad more. I'll try that though. Thank you.

Dixon700 Enthusiast

Dixon700

Posted
Posted

Enhanced GM package is required to perform the crank sensor relearn with auto enginuity. So I guess I'll have to spend $275... I imagine it'll pay for itself in good time.

Dixon700 Enthusiast

Dixon700

Posted
Posted

Could a dirty maf sensor days this? I cleaned my maf once, but I haven't Ben able to get rid of the maf poor performance code. I'm going to try cleaning it again then I'll probably need a new one.

wingman Enthusiast

wingman

Posted
  • Author
Posted

Hey Adam,

Might be worth checking the price of a Tech 2 on the internet, over here they're not so spendy, and you can share it with your buddies too. I know, they're Chinese clones, but this one I have is that, and works just fine. With shop prices up there it may just be worth the investment.

Good luck, Paul.

Dixon700 Enthusiast

Dixon700

Posted
Posted

I don't think there's much the tech 2 could do that the enhanced package of auto enginuity couldn't do. I know with the enhanced Chrysler package I logged all kinds of stuff on my Dodge tested the FCA and cp3 with a click and performed injector kill tests and cylinder contribution tests.

wingman Enthusiast

wingman

Posted
  • Author
Posted

I hear you. Over here in UK there's not much choice in diagnostic stuff!

Dixon700 Enthusiast

Dixon700

Posted
Posted

I'm looking into get efilive and you can do a crank relearn with it. So I'll kill a few birds with one stone and not worry about the enhanced package for auto enginuity. Plus get some tuning and wake it up a bit.

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