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61_FL_Apache · 03-15-2021, 04:07 PM

I have had this code for many years and I did some research on it, but didn't resolve it until this past weekend.

I'm not a professional mechanic so I did not know that my cap and rotor issues are directly affected by the P1345 code. I also think my p0430 code was caused by the P1345 issue. I cleared the codes 2 days ago and neither have returned. My theory is when the crank/cam position correlation was off, it was causing the misfire probably putting too much unburned fuel down the exhaust possibly causing the P0430 code (catalytic converter is not functioning efficiently).

I was under the impression that the distributor was in a fixed position and a fancy scan tool was required to make any adjustments to solve this issue.

Thanks to a guy on you tube, he shows how you can take an old cap and modify it to watch the spark for cyl #5. see below.

I took this video as I adjusted it.

https://www.youtube.com/watch?v=GYMKenBb6TA

Here is a 2nd video of it resolved.

https://www.youtube.com/watch?v=h5RgpjPK8wQ

This is the video that helped me resolve this issue. He did something different with the dist. hold down bracket that I didnt need to do. Mine had room for adjustment.

https://www.youtube.com/watch?v=obP09XSt4Yo&t=386s

All feedback is welcome and I hope this helps someone else with this issue.

Thanks!
Steve

03-15-2021, 04:07 PM	#1
61_FL_Apache Who Me? Join Date: Sep 2010 Location: Royal Palm Beach, FL Posts: 4,065	97 Tahoe 5.7 p1345 code solved I have had this code for many years and I did some research on it, but didn't resolve it until this past weekend. I'm not a professional mechanic so I did not know that my cap and rotor issues are directly affected by the P1345 code. I also think my p0430 code was caused by the P1345 issue. I cleared the codes 2 days ago and neither have returned. My theory is when the crank/cam position correlation was off, it was causing the misfire probably putting too much unburned fuel down the exhaust possibly causing the P0430 code (catalytic converter is not functioning efficiently). I was under the impression that the distributor was in a fixed position and a fancy scan tool was required to make any adjustments to solve this issue. Thanks to a guy on you tube, he shows how you can take an old cap and modify it to watch the spark for cyl #5. see below. I took this video as I adjusted it. https://www.youtube.com/watch?v=GYMKenBb6TA Here is a 2nd video of it resolved. https://www.youtube.com/watch?v=h5RgpjPK8wQ This is the video that helped me resolve this issue. He did something different with the dist. hold down bracket that I didnt need to do. Mine had room for adjustment. https://www.youtube.com/watch?v=obP09XSt4Yo&t=386s All feedback is welcome and I hope this helps someone else with this issue. Thanks! Steve __________________ Steve 1997 Tahoe LT 4D 2WD (DD) 1961 Apache 10 (sold) 1965 C10 Stepper (sold)