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Quikfix

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  • Lexus Model
    RX300

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  1. I agree that could change the coils that are needed. I am kind of frustrated that that is what it was as this forum has many listings showing coils going bad. I just thought it might be something more major. This is a 2000 RX300 with 154k miles. I agree. Not worth pumping $5k+ into it. Possibly, I could do this myself with $650 in parts (2 coils and 2 Air fuel ratio sensors.) Not sure how hard the air fuel sensors are to replace. Does anyone know about the catalytic converters? I understand there are two upper and one lower. Could I possibly fit a universal catalytic on this? I understand the lower one is bad.
  2. Okay. Received the call from the mechanic. Two coils are bad: 1 and 6. A/F Sensors are bad on bank 1 and 2. Replacement cost is $1200 with factory parts. (coils are $115. A/F sensors are $265.) That is $760 in parts and $440 in labor. Other bad news and the results of the muffler noise. Apparently, bad coils dump so much fuel into the exhaust that the cat is now bad. The mechanic suspects that the pre-cats may be bad, too (not sure what the pre-cat is.) Catalytic converter replacement cost is $2400. If pre-cats are bad, too, it is another $2000 to replace them. So, overall bill would be $5600. Any comments are welcomed. I am thinking I will probably chase the core trouble and have them fix the coils and A/F sensors unless there is a better way. Is that the normal cost of Air Fuel Ratio Sensors? Is there a more economical way to do the above?
  3. I went to get an inspection and found that I had codes: P0446, P0441, P0440 - Emission control system. The funny thing is that I did not have a CEL. As a matter of fact, the CEL doesn't shine at all even at start up. Has anyone heard of that problem? Later in the week, I get more codes but no CEL. P0300, P0304, P0305, P0306, P1150. Then the rough idle starts and I am not able to get out of low gears. A year ago, I put new injectors on 1,3,6. A year ago, I did an extensive clean on the IACV with carb cleaner and Qtips. Items I have done now: 1. Cleaned MAF. 2. Spray throttle body in place and spray down into the IACV. 3. Switch coil from 6 and 2 to try to move the code. 4. Buy new plugs for 2,4,6 to see if this improves situation at all. I drive it out and around and immediately have a stuffy, clogged feel to the drive. at a half mile, I get a lot of muffler, exhaust hissing. I pull over and find my cat glowing like lava. after letting it cool, I limp home. I now have very loud exhaust hissing noise. In the trouble shooting, I kept clearing the codes and pulling new ones to check. One code mentions I might be running lean (?? lean?). I pull the throttle body and check it. I pull the IACV and find it is still very clean. All my hoses are hooked up. I swap my coil from 6 to 5. I pull codes after running for 10 minutes and find that my code moved from 5 to 6. I now have these: P0300, P0306, P0301, P1150. Need advice on the above. Also: 1. Did I wreck my exhaust manifolds? 2. How do I check for vacuum leaks? 3. Has anyone ever run down the EVAP system? 4. Could I have crossed a hose connect last year and have the wrong vacuum hose connected? (My set up on the EVAP and VSV matches my book diagram - Haynes) 5. Does any one have any information on what the air fuel sensor is, how you check it, and how can I look up more information on it? (This search doesn't let you hit air fuel sensor because 'air' is too small a word.) At this point, my RX300 is not driveable. I think I am needing to have it towed. Looking for advice. Thanks. BTW, I have read a ton of good entries on this site. I fixed my RX well last year with this site alone. You guys rock. Thanks.
  4. Thanks, All! You directed me to pay more attention to installing the injectors and that did the trick. I must have been rushing through this before. I am relieved to know that it isn't bad injectors. You guys rock. Thanks.
  5. the O-rings that came with them are new. I also bought two sets for spares. I am putting them on the injectors I am putting back on the fuel rail. I pulled the fuel rail off today. I took out the one injector that was spewing. I notice that the O-ring is smashed on a side. It was new. Is there a trick to putting the O-rings on and then putting the injector into the rail? The manual that I read doesn't mention anything specific. I would totally understand if it was something I was doing.
  6. Hello. This is a great forum! Thanks for all the great tips. My issue is about replacing fuel injectors. I purchased and received remanufactured fuel injectors. I replaced two on the back rail. After putting everything back together, I started the engine. Fuel leaks out of the injectors/fuel rail area. As I shine a light on it, I see fuel coming down injector #3 (cylinder 3.) I worry that I did something wrong so I took it apart, moved 3 to position 5. I put back an old injector I know is good. I start the engine again and I see #5 leaking. It appears to be leaking from the top down. This last time was enough for a strong dripping action but leaked persistently. Is there something I am doing wrong? The new injectors I received (remanuf) are Denso 23250-20020. The have a 3130 in an imbedded box also. As I look at the old injector, it has the same markings. I would appreciate anyone's help. Smooth1, are you out there?
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