1996 Lexus LS400 Q&A
1996 Lexus LS400 Question: engine shudder
I would look closely at the ignition. Remove both distributor caps and inspect the caps and rotors. Lexus are also very precise about the routing of the spark plug wires to prevent generation of EMF and to avoid damaging the plug wires by abrasion due to mis routing. Great engine. I am surprised sometimes how they even run as well as they do with a bad cap on one side of the engine. - patrick mannion
When we bought the car the engine light was on and dealer said it was O2 sensor. They replaced sensor and light went off for a few hundred miles. Light came back on and code is for catalytic conv...