Skates

I have an 2000 RX300 that has the following codes appear intermittently:

• P1354
• P0300
• P0304
• P0306

I say intermittently as they only appear after roughly 30 minutes of highway driving, if I turn off the car for 15-20 min, the CEL will turn off and the alarms will clear.

I have gone through all the P1354 threads associated with multiple cylinder misfires, and all had the entire bank of cylinders misfire.

Any thoughts on what could be causing only 2 of my cylinders to misfire?

salimshah

Bad coil-pack, bad plugs .. Have you tried swapping things around .. suspect with know good.

Once you get passed the swapping test, I would investigate with compression test/valve leak down.

Salim