Mike in PDX 00 RX300

It appears my engine is done. 150k miles. Labor to R&R is $1500. I found a used long block with 80k for $2350. I remember seeing instructions somewhere on swapping the motor from the topout but cannot locate them. Any help to a link would be greatly appreciated. Thanks!

UPDATE...I disconnected the front sensor, wrong one I know and my MPG Increased by 0.5. Today I disconnected the rear sensor, by firewall and my MPG Decreased by 1. I can still feel the car misfiring...that has remained a constant. Perhaps it's time to dig in & check compression, etc?

When my mechanic replaced the injectors, seals etc he mentioned that one of them was physically broken too. The net result was mycar wentfromrunning lean to rich and still getting codes . the 2 constants in this whole process are p0303 and p0304, with the other codes being often but not always So today I went and had my codes pulled again: P0300 P0301 P0303 P0304 P1130 bank 1 sensor 1 I disconnected the o2 sensor on the manifold behind the radiator...was that the right one? It seems like itmay run a litle better but not a lot. CEL still flashing,rough idle and shakes under load around 2200 rpm in OD Mike, if you're refering to P1130 bank 1 sensor 1 is the sensor in the rear manifold, at the firewall. The front 1 that you disconnected is refereed to as bank 2 sensor 1. HMM...I was wondering that. It's funny because while it isn't running perfect it DOES run a little better. I'm getting an extra 1 MPG I think. I'll try disconnecting the other one too and see what happens. Is that one really hard to get to? Is it possible BOTH sensors failed near the same time?

When my mechanic replaced the injectors, seals etc he mentioned that one of them was physically broken too. The net result was mycar wentfromrunning lean to rich and still getting codes . the 2 constants in this whole process are p0303 and p0304, with the other codes being often but not always So today I went and had my codes pulled again: P0300 P0301 P0303 P0304 P1130 bank 1 sensor 1 I disconnected the o2 sensor on the manifold behind the radiator...was that the right one? It seems like itmay run a litle better but not a lot. CEL still flashing,rough idle and shakes under load around 2200 rpm in OD

When my mechanic replaced the injectors, seals etc he mentioned that one of them was physically broken too. The net result was mycar wentfromrunning lean to rich and still getting codes . the 2 constants in this whole process are p0303 and p0304, with the other codes being often but not always

I replaced 3, 4 and 5 but I didn't really notice an improvement.

2000 RX300 150k miles Car ran perfect until one day when I started it it barely ran. It shakes like a V8 muscle car at idle. Initial codes were P0303 & P0304 Replaced: 3 ignition coils spark plugs MAF sensor Rebuilt ALL injectors Still getting P0300/P0303/P0304 AND occasionallty P1130 &P1172 or P1171. IF I pull the ECU fuse before I start the car all gears work until I turn the car off. I can really feel the misfire around 2200 rpm in overdrive on the freeway. THEN when I RESTART it goes into safe mode and only gears 1-3 work. Sometimes in safe mode the car will run even worse and BARELY run, feeling like it's gasping??? (major backfiring etc) until I hit 3800 rpm and then it catches and goes like a powerband is kicking in??? My thoughts are: Vacuum leak? O2 Sensors? Knock sensor inside engine? Something else going on inside the motor??? Also: 1. My ABS light was on when I got the car back after the transmission was rebuilt and is not working but the car ran fine so I suspect that is unrelated. 2. There are 2 ground wires near the drivers side strut tower. behind the airbox under the brake fluid resivor. One of them was dangling and I could not find out where to connect it so I just attached it to the block??? Any suggestions would be greatly appreciated!!! Thank you.