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Abe Scott

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Abe Scott last won the day on July 17

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    james

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  • Gender
    Male
  • Lexus Model
    ls400
  • Lexus Year
    1999
  • Location
    North Carolina (NC)

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  1. I know these are old post, however on the 99 ls400 there is the suit filter and the filter for the fuel regulator both are in the tank. And of course the online filter on the passenger side near the differential.
  2. I had sometime to get under my LS and replaced the trans mount no more vibration. Thanks again for the input.
  3. Thank you for your input I was thinking the drive shaft. I had not considered the transmission mount it is still a few days until I and get under the vehicle. thank again I see this conversation took place in 2009
  4. the vibration started at 55 and gone down ever since. thanks for question because speed for vibration is always lower it more than likely the drive train. any will check it out . when I get over surgery
  5. This may a possibility. I would thank that if it is a tire, I should have notice it before engine swap. And it may be, or I am I just trying to make a mountain out of a mole hill. thank you very much.
  6. I have 99 ls400 base, that has a vibration. the engine has been swapped, engine and trans were pulled and installed as a unit. after swap the vibration started mild. now I don't drive it much because of the vibration. the motor mounds were replaced. at idle it doesn't vibrate, only when driving is it possible the drive shaft was installed back or the saddle bearing needs to be replaced. I replaced the torque converter bolts hoping that was it. any ideas is appreciated
  7. Update: I think I have got it after all the work, time, and money spent. I started checking again I found an unbelievable vacuum leak around lower intake manifold. replace gasket today runs great thanks for all of the support. something that simple fix. when the engine was swap the starter was replaced. The gasket moved or something apparently cause a vacuum leak. I had no idea a vacuum leak could cause random misfires. I was sure it was an ignition problem.
  8. I did not find evidence of broken wire or shorted connection in the wiring harness. so at this point I will retrace everything that I have done, perhaps I have over looked something. I will start with ecu
  9. It is possible that the undercharged battery is destroying you alternator. the alternator trying to support the load of ls400
  10. I inspected the injector connectors, checked continuity from ecu to connectors Just to be sure I am changing the connectors. I did find a vvti connector not latching. will continue testing
  11. thank! you I will inspect the injectors connectors and wiring I have already done the coil connectors.
  12. again sorry for the confusion. Okay the the random misfire occurred before the swap of engines and it exist today. Random misfire and code for random cylinders. I did replace the injectors, the throttle, the cop and plugs. I played the parts game the o2 sensors have all been replaced, the MAF sensor has been replaced, VVTI controls have been replaced, fuel pump has been replaced and TPS. I don't what to do next I have owned the car 1 year and 7 months I have no been able to drive it more 22 miles at any time. rough Idle. sometimes limp, sometime poor shifting trans, VSV and CEL same codes for random misfire. sometimes CEL flashes. I have use my scanner and 2 other same results random misfire Code . could a short in the wiring harness cause this condition of misfiring. It's the only thing in common before and after engine swap.
  13. Thank you for the codes these are the codes especially P0300 for random misfires I have been getting. Thank you again still can't seem to solve the issues with the misfires. as I said I replaced part that may cause this condition.
  14. again sorry for the confusion. Okay the the random misfire occurred before the swap of engines and it exist today. Random misfire and code for random cylinders. I did replace the injectors, the throttle, the cop and plugs. I played the parts game the o2 sensors have all been replaced, the MAF sensor has been replaced, VVTI controls have been replaced, fuel pump has been replaced and TPS. I don't what to do next I have owned the car 1 year and 7 months I have not been able to drive it more 22 miles at any time. rough Idle. sometimes limp, sometime poor shifting trans, VSC and CEL same codes for random misfire. sometimes CEL flashes. I have use my scanner and 2 other same results random misfire Code .
  15. trouble codes are just always random misfire with P0305, 307 and so on. no code for any remotely like o2 sensor
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