worldforgo

I have a 94 ES 300.

So today, I was driving down the interstate and all of the sudden I noticed my Check Engine MIL light started to blink. Knowing this is a sign of a big issue, I stopped by Advanced and used their code reader. Its reporting two bad O2 Sensors and a Cylinder 2 Misfire. The two bad sensors have been reporting since I got the car but now The car is idling rough(er) and anytime you try to give it real gas, the MIL starts to blink. You let off, it stops. So, is it the O2 sensors causing this? Can someone tell me where Bank 1 Sensor 1, Sensor 2 etc. is?


All help much appreciated!

3000

The misfire could be a bad fuel injector, spark plug, or spark plug wire. One O2 is at the heat shield of the front exhuast manifold header and the other I think... is at the cat converter.

brandoe91

iTrader: (1)

read this

https://www.clublexus.com/forums/es3...00-w-pics.html

worldforgo

I saw that, I just want to make sure I know which ones are which and how many there are.

Bank 1 Sensor 1 is Back of Motor
Bank 1 Sensor 2 is behind Cat
Others? Front of motor?

lexusCBAZ

On the V-6 there are two 02 sensors on the "engine". One on the front(thru heat shield, and the other is on the "rear" exhaust manifold on rear of engine(between engine & firewall). It is a tight fit but can be replaced reaching down behind engine( I just recently replaced both of mine. There may be a "third" sensor after the cat. converter(in the exhaust pipe) .

worldforgo

So now I am getting a P0202 Injector Circuit Malfunction. I have ordered a new Injector for and will let you know what happens. The plug is getting spark and I when I pulled the plug it was dry and burnt to a crisp. The plug is a denso that is fairly new.

worldforgo

I replaced the Injector and all is well now. Seems to have fixed the problem.