utahrx300

UPDATE, Well The transmission has been replaced and the RX300 drives great. I am going to replace the catalytic converter and clean off the rear located OCV to try getting it running perfect.

Thanks for the help.

Bump this thread.

I'm wondering if the ocv is causing my problems. I posted my problem in this other thread. Thanks everyone

http://us.lexusownersclub.com/forums/index.php?showtopic=61858

Would this same problem listed cause the 99 rx300 to not drive when the engine heats up? It just revs up, just like a clutch that is going out. I have the smell of gas, I'm starting to put money on this ocv being my problem.

My plugs are looking poor, the cylinder 6 coil pack is also in poor condition after what looks like years of the oil cap leaking and soaking the coil and plug area. I also cant get the engine trouble code to re-appear. When the lexus is started it has a whining noise that sounds like a power steering and started about the same time as the tranny problems. When the transmission is engaged it will drive for about a mile and then the motor just rev's up with the vehicle not moving at all. Almost like a slipping clutch.

by the codes you need to fix the missfire first, that could be causing all of the other codes...cylinder four coil pack is probably bad...replace that and reset all codes and you will probably be good to go...

It seems to me that if the cat is the culprit the plugs should all be normal or look similar, and if the coil is bad it will show on that cylinder individually. Hopefully

I have a problem on my 99 like you have said, right now it won't even drive.

It pulled a few codes can't remember but, bank two lean, failed cat or ignition system malfunction. Anyway I think the catalytic converter, plugs and tune will fix the problem.