XtboX

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About XtboX

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  • Lexus Model
    LS400
  1. Hi guys, Hopefully someone will be able to give me a hand with my tranny issues. I have an Aus delivered UCF10 that I've owned for about 6 months now. Over the last few months, the car seems to have been exhibiting the following issues: - rather bad vibration while in D, but not P/N idle drops from 650 to 600 when placed in D cleaning the IACV and T/B did not help vibrations adjusting TPS to factory specs did not help either - occasional jerk when shifting from P/N to D - rough and erratic engaging, especially when slowing down or maintaining a low speed most noticeable when going through a roundabout or driving in a parking lot ie. if you slow down (but not to a complete stop) and accelerate again the car hesitates for a second and then engages I then tried adjusting the tranny throttle/line pressure cable to see if I could get the tranny to shift smoothly, and the following issues started appearing: - rough shifting between gears, especially from 1 - 2 where the car feels like it hesitates for a second before changing - when slowing to a stop from driving speeds, the car would jerk when downshifting - there was an occasional squeal from the transmission when reversing under load (up an incline) - about a month ago, a loud "ticking" (on close listening it sounds like those music shaker thingys) sound started coming from under the car when cold, pretty sure it wasn't an exhaust leak the ticking is present while in P/N/D/R, and gets louder/more frequent with increasing revs ticking would stop when the car warmed up - no diag error codes shown I spoke to the last owner and was told that he had flushed the tranny with a "suitable for T-IV" fluid (Penrite MHP) about 6 months prior to selling the car. The fluid was by now turning slightly brownish. I purchased a barrel (20 litres) of Mobil 3309 (which AFAIK *is* T-IV) and did several drain and refills to clean the old oil out, which took about 11 litres. The ticking stopped after this. I proceeded to do several drain and refills over the following 2 weeks till the 20 litres were completely used up. At this point I was about to look into getting replacement tranny mounts to see if they would fix the idle vibration issue. A week ago, the ticking came back, followed by a loud grinding noise as well as a whine that can be heard in the cabin. The noise seems to remain even when the car is warmed up. Does it sound like my torque converter is toast? Thanks in advance!
  2. Hey guys, I have an Australian delivered (RHD) '93 LS400. We had a fairly bad storm here a couple of weeks ago where I drove through several floods. My speedo worked fine till later that night when it completely died and started flashing the O/D light. I checked the error codes and it came up with a code 42 indicating a fault with the #1 VSS. Thinking it may have been fluid ingress in the sensor, I cleaned the sensor and the contacts which did not fix the problem. Even after replacing the sensor, I am still experiencing the same issue. I tried turning the driven gear on the VSS with the ignition on and the speedo moves, hence it would appear that the gear is not being engaged by the driveshaft. I rang my local Lexus dealership and one of the service techs there told me that the gear on the shaft in the extension housing could be stripped. Can water ingress possibly cause a gear to be stripped? Is there a correct or incorrect way of installing the VSS? The hole where the VSS shaft goes into is fairly tight, and to insert the VSS I've had to wiggle/rotate the VSS for it to fit in. Could this cause the gears to not engage? Also, could someone provide some instructions on removing the extension housing to inspect the gears? Any help would be much appreciated, thanks!