- Buick Ownership
- Buick regal ls 2002
Ok so i have a 2002 buick regal ls it has 128k miles on it. So when im driving especially getting on the highway it starts to shudder and i cant figure it out. I have changed the tps, fuel filter, fuel pump, air filter. I changed all that and sparks plugs and wires and coil packs and maf sensor and both 02 sensors over the last year and this just started happening. No check engine light on sometimes while shuddering the check engine light blinks the odb reader says multiple misfires. I noticed today one of my spark plugs was shaking a lil bit but no other ones. Anyone have this problem or a solution?