4.9 misfire issues
I put a new mass airflow sensor in it. It did not make any change.
It’s still cold starts great and runs normal for about 30 seconds then it starts to either miss or it’s just a timing spike but the timing does spike and fluctuate as it’s idling. I can see it on my scan tool. If you drive it, it gets even worse, but it still runs. It just seems to miss
or stutter or spike worse.
so frustrating
help!
It’s still cold starts great and runs normal for about 30 seconds then it starts to either miss or it’s just a timing spike but the timing does spike and fluctuate as it’s idling. I can see it on my scan tool. If you drive it, it gets even worse, but it still runs. It just seems to miss
or stutter or spike worse.
so frustrating
help!
Last edited by Funforandrew; Jan 8, 2024 at 12:56 PM.
I put a new mass airflow sensor in it. It did not make any change.
It’s still cold starts great and runs normal for about 30 seconds then it starts to either miss or it’s just a Timex bike but the timing does spike and kind of Kleiman fluctuate as it’s idling. I can see it on my scan tool. If you drive it, it gets even worse, but it still runs. It just seems to mess or stutter or spike worse.
so frustrating
help!
It’s still cold starts great and runs normal for about 30 seconds then it starts to either miss or it’s just a Timex bike but the timing does spike and kind of Kleiman fluctuate as it’s idling. I can see it on my scan tool. If you drive it, it gets even worse, but it still runs. It just seems to mess or stutter or spike worse.
so frustrating
help!



