Bob Kunkle
Active Member
My ST has had a stumble while idling. I get P0353 as a pending DTC while idling and P0302 & P0306 while holding rpm at 2000RPM. I replaced the plugs since the truck has 100,000 miles and the #3 plug wire had quite a bit of corrosion so I ran out and got cables. Replacing these items has not resolved the rough idle.
1. I also checked the low side of the coils and the connection looks fine.
2. I used a known good wire from the old set.
3. Used an old plug from another cylinder
Any thing else before I run out in the morning and get a coil?
1. I also checked the low side of the coils and the connection looks fine.
2. I used a known good wire from the old set.
3. Used an old plug from another cylinder
Any thing else before I run out in the morning and get a coil?
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