On a recent trip the engine started misfiring. Managed to get it back home and then started dooing some research. It had a P0300 code as well.
Found various threads on here about tracking misfires using Torque Pro so I set that up to monitor realtime and history. Sure enough cylinder 4 had about 59,000 historical misfires. Changed the coils on 3 and 4 and then cylinder 3 was misfiring.
Figured I was better off replacing all coils so ordered a set from Amazon. price for the set was the same as one coil from the local auto shops - around $65.
I have installed them and have a question on the misfire data. I am seeing consistent occasional misfires across all the cylinders in realtime. Typically this shows as a "1" or a "2" for that cylinder. These are however not beeing added to the historical misfire data. Here is a screenshot of what I setup:
So my question - is this normal or should there by zero misfires?
If not normal, any suggestions on what I should be looking at?
Vehicle does have 225k and sparkplugs are ACDelco and approx 50k miles old.
Thanks.
Found various threads on here about tracking misfires using Torque Pro so I set that up to monitor realtime and history. Sure enough cylinder 4 had about 59,000 historical misfires. Changed the coils on 3 and 4 and then cylinder 3 was misfiring.
Figured I was better off replacing all coils so ordered a set from Amazon. price for the set was the same as one coil from the local auto shops - around $65.
I have installed them and have a question on the misfire data. I am seeing consistent occasional misfires across all the cylinders in realtime. Typically this shows as a "1" or a "2" for that cylinder. These are however not beeing added to the historical misfire data. Here is a screenshot of what I setup:
So my question - is this normal or should there by zero misfires?
If not normal, any suggestions on what I should be looking at?
Vehicle does have 225k and sparkplugs are ACDelco and approx 50k miles old.
Thanks.