1999 Lexus ES300 Questions

Get answers to questions about your 1999 Lexus ES300 at RepairPal. Find solutions, diagnose problems and get back on the road.

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My RPM is dropping frequently mostly when I'm driving and I've gotten the catalyic concerter fix as well as my fuel pump and still having the same problems? What cluld possibly be wrong?

the bucking is worse when cold but its impossible to go out on the highway.

This happened before. I recall there's a drainage hole that gets plugged and needs to be cleared, but where??

I already had front brakes replaced. Light hasn't been on then suddenly it came on

The ac light hasn't blinked any. This happened 1month ago.

the same codes came up + P0172 system to rich bank 1 please help me

I've changed all the coils,map sensor and air filter hoses light goes off every time but after a few miles comes back on again.

i changed the gaskets and oil is still getting into the spark plug tubes can anyone tell me why