gungriffin
New Member
After searching all over the site I have not found anything realting to this yet. I bought my 1996 LS400 about a year ago used on ebay. I have since put about 25000 miles on it and it has about 153K on it at the moment. So about a month ago I took it into my shadetree mechanic to have him work on repalcing a bearing on the serpentine belt. While it was in I told him to do a full tune-up (plugs, wires, timing belt, and rotors and buttons... the usual). When I got the car back it would not rev past a certain point. When I left his shop the CEL was off, but later that night it the dubious light came on. The problem started higher in the rev range approx 5500 but then move down in the rev range to about 3500 (unless it is cold - about 2500) after about a day. We pluged it up to a OBDII reader and it said that it was the cam shaft position sensor bank 1. We replaced the sensor and the problem seemed to start to go away. Slowly but surely that day it started to move higher into the rev range again. Well.... no dice. The CEL came back on and it came back to 3500 RPM. Took it into autozone and used their reader. It said that it was the same problem- "Camshaft position sensor bank 1 circuit malfunction". I don't understand what it could be. At 3500RPM it almost feels like a fuel cutout. In no way does it feel mechanical, like a misfire. While in park it will rev and growl all the way to redline like usual ( although you can feel a little hestation at 3500RPM). While driving at all points below 3500 RPM it runs like a top and pulls hard, but after 3500 while driving it just stops going any further into the rev range?????? My mechanic has a "friend" at the Lexus dealer, but all he would say is to bring it in and it would take $300 and 3 hours. Please help me to not have to take it into the dealership. Any advice????
