Ignition advance question ....
#21
Kyle,
My new spider came in this morning. I went out after lunch today & pulled the upper intake , cleaned it & the lim , installed the new spider , put it back together . Now I have No codes!!!!!!!!!
Problem solved, no P0300 or P0306, & the old motor runs pretty smooth for 212,000
miles.
Thanks for every ones help ,
Sherman
My new spider came in this morning. I went out after lunch today & pulled the upper intake , cleaned it & the lim , installed the new spider , put it back together . Now I have No codes!!!!!!!!!
Problem solved, no P0300 or P0306, & the old motor runs pretty smooth for 212,000
miles.
Thanks for every ones help ,
Sherman
#22
Sherman, good job! You won't regret doing the upgrade! Glad you got her going. Sorry we went slightly off topic with your thread... still a good idea to at least check cam retard after removing the distributor
#23
Sorry to further derail the original topic of this thread but I searched a term and though I could add in my $.02 worth of experience.
I've been having trouble with P1345 for while and got a PC based scan tool and some GM specific software to read the expended PIDs for Cam Retard.
Let me start by saying my truck runs rather well. No misfires, no weird idle, no power problems... but my Cam Retard is currently set to -25 and my ignition timing is +20. The ignition timing will jump around, but I've never seen it go above 20.0. Perhaps that is the programmed limit that it will correct for? I've come to terms that my distributor is most likely off a tooth, but in my trial and error (prior to the scantool) it would not even run with the distributor set 1 tooth in either other direction.
Will a Case Relearn set the values back to a default (or properly calculated) number? Will the ECU do this by itself over time? If I can get the Cam Retard value at 0, should I let it run even if it doesn't sound right for the timing to get set better?
Thanks and glad the OP got his problem sorted out at least.
I've been having trouble with P1345 for while and got a PC based scan tool and some GM specific software to read the expended PIDs for Cam Retard.
Let me start by saying my truck runs rather well. No misfires, no weird idle, no power problems... but my Cam Retard is currently set to -25 and my ignition timing is +20. The ignition timing will jump around, but I've never seen it go above 20.0. Perhaps that is the programmed limit that it will correct for? I've come to terms that my distributor is most likely off a tooth, but in my trial and error (prior to the scantool) it would not even run with the distributor set 1 tooth in either other direction.
Will a Case Relearn set the values back to a default (or properly calculated) number? Will the ECU do this by itself over time? If I can get the Cam Retard value at 0, should I let it run even if it doesn't sound right for the timing to get set better?
Thanks and glad the OP got his problem sorted out at least.
#24
Sorry to further derail the original topic of this thread but I searched a term and though I could add in my $.02 worth of experience.
I've been having trouble with P1345 for while and got a PC based scan tool and some GM specific software to read the expended PIDs for Cam Retard.
Let me start by saying my truck runs rather well. No misfires, no weird idle, no power problems... but my Cam Retard is currently set to -25 and my ignition timing is +20. The ignition timing will jump around, but I've never seen it go above 20.0. Perhaps that is the programmed limit that it will correct for? I've come to terms that my distributor is most likely off a tooth, but in my trial and error (prior to the scantool) it would not even run with the distributor set 1 tooth in either other direction.
Will a Case Relearn set the values back to a default (or properly calculated) number? Will the ECU do this by itself over time? If I can get the Cam Retard value at 0, should I let it run even if it doesn't sound right for the timing to get set better?
Thanks and glad the OP got his problem sorted out at least.
I've been having trouble with P1345 for while and got a PC based scan tool and some GM specific software to read the expended PIDs for Cam Retard.
Let me start by saying my truck runs rather well. No misfires, no weird idle, no power problems... but my Cam Retard is currently set to -25 and my ignition timing is +20. The ignition timing will jump around, but I've never seen it go above 20.0. Perhaps that is the programmed limit that it will correct for? I've come to terms that my distributor is most likely off a tooth, but in my trial and error (prior to the scantool) it would not even run with the distributor set 1 tooth in either other direction.
Will a Case Relearn set the values back to a default (or properly calculated) number? Will the ECU do this by itself over time? If I can get the Cam Retard value at 0, should I let it run even if it doesn't sound right for the timing to get set better?
Thanks and glad the OP got his problem sorted out at least.
With cam retard at -25 degrees, when you get everything back in spec, you'll see what you've been missing. You might notice an improvement in performance, and you'll definitely notice an improvement in fuel mileage, (and the longevity of the distributor cap).
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