Dreaded p1345

[DallasTahoe]

I've been searching and reading other posts, my Yukon doesn't run bad, but the a@&hole before me took out the bulb for the check engine light. So I put a new bulb in it then Took it to autozone to pull codes it has the p1345 camshaft to crankshaft position correlation malfunction. It has a new crank sensor, and I swapped a cam sensor for one I know works, off of my other tahoe(same year, engine, etc.) and cleaned the cap and rotor which are new, also cleaned the metal piece that feeds the cam sensor it's info. Did the timing trick with the hole in the dist cap because I don't have a scanner to do it properly, and everything seems good, but the ses light is still on. I read something about a drive cycle, needing to be done before the light goes off, but I also read that the light should go off as soon as the "timing" is correct, which is true and am I missing something?????


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[SunlitComet]

drive cycle does not apply here if the code is active. a drive trip does. if cleared it will kill the light after three drive trips.

 

[DallasTahoe]

So how far and long should I drive it for? I thought disconnecting the battery for a few minutes would clear that code?


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[DallasTahoe]

Ok so I let it sit for a few minutes, I started it a couple of times and after this last start the SES light went off, so I'm good now! Thanks for the help SunlitComet!


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[DallasTahoe]

Well 1345 came back. I put my heads on and put everything together, it was running rough and I tried to adjust the timing with my distributor cap with the hole in it to see the spark at over 1100rpm. Had to pull the dizzy and move it one tooth because I couldn't adjust it anymore because the cap was up against the intake, Got it set ran better but now it's throwing p1345, has low power on hills and stumbles at stoplights, it actually died once. But otherwise runs good, should I try to reset the dizzy?


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[SUBURBIAN]

This isn't all that "dreaded". I'd consider a P0300 to be "dreaded". This is simple. You just need to have the distributor phased the right way, with a Tech 2 or equivalent and then your problem isn't a problem any more.

 

[SunlitComet]

remove the dizzy and start over.

 

[SunlitComet]

and then check alignment of cam_retard.

 

[DallasTahoe]

and then check alignment of cam_retard.

How do you check alignment of cam retard?

 

[DallasTahoe]

So I took out the dizzy, followed the instructions you supplied to a tee, still stumbles when taking off hard not so much when easing into it, no SES light, yet, lol. Runs decent but I guess I can't expect too much until I get the cam retard set right?


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