Hey all -
My 94 is running rough for the first 20-30 seconds at start up. I replaced the cap, wires and plugs about a month ago. All Toyota correct parts. I’m at a dead end with the diagnosis. I have a check engine light on, but the code comes back 21, O2 sensor. I doubt this would be the cause. I drove a car a while back that was missing due to ignition coils going bad, this feels identical. One of the cylinders isn’t firing. Any thoughts?
My 94 is running rough for the first 20-30 seconds at start up. I replaced the cap, wires and plugs about a month ago. All Toyota correct parts. I’m at a dead end with the diagnosis. I have a check engine light on, but the code comes back 21, O2 sensor. I doubt this would be the cause. I drove a car a while back that was missing due to ignition coils going bad, this feels identical. One of the cylinders isn’t firing. Any thoughts?