hardhat

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About hardhat

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  • Lexus Model
    RX300
  1. 2000 Lexus LS400 with 126k miles. Has been very reliable. Went on vacation 4 hours from home and noticed that battery was weak. Would start slowly. After it got running, it was fine. I did notice a few weeks ago that the battery got weak while sitting idling for a long duration (radio quit working), but perked back up when driving. I thought the battery going bad. Put a new one in. Everything fine for 2 weeks. Then today the headlight leveling warning came on and the battery light came on. I have not driven the car enough to tell what is going to happen. Is it a headlight leveling motor shorted out draining the battery? Dead alternator that has been gradually going bad? Thanks, Larry
  2. On the subject of rotors. I have heard that uneven and excessive wheel torque can cause warping. Not convinced that this is true, but kind of makes sense. So I told the folks at the shop doing my tires that I wanted my tires torqued down. So they blasted them on with an impact wrench and then went around and clicked the torque wrench on them. Not a single bolt budged when they did this. Car drives fine, but now I'm wondering if I should loosen the bolts and retorque all of them to spec. Larry
  3. On the subject of rotors. I have heard that uneven and excessive wheel torque can cause warping. Not convinced that this is true, but kind of makes sense. So I told the folks at the shop doing my tires that I wanted my tires torqued down. So they blasted them on with an impact wrench and then went around and clicked the torque wrench on them. Not a single bolt budged when they did this. Car drives fine, but now I'm wondering if I should loosen the bolts and retorque all of them to spec. Larry
  4. I will tell you one thing. I just bought a 2000 LS400 and it has nitrogen in the tires and that thing averaged 28.3 mpg on a 400 mile interstate trip with a couple of some driving around in memphis (go to a mall) and in Jackson, MS (to eat and mail a package). I thought the nitrogen was BS (and still do). However, my wife informed me that the car got unexpectedly impressive fuel economy and it does have nitrogen in the tires. So consideration was given to buying a $999 nitrogen generator from harbor freight :chairshot: After sleeping on it however, nitrogen in tires is just like those additives people put in their cars. It is snake oil. Makes impressive claims but no conclusive evidence showing any real world benefit. When the time comes to fill them back up, air is going in them unless the place I get the tires puts N2 in there for free. FWIW, on the topic of snake oil.... My 94 LS400 was leaking coolant (adding a pint to quart a day) and I found a leak on the driver side but couldn't tell where it was coming from (drip every second or so; also had bubbles in coolant recovery tank and was worried about a blown headgasket). I put some Bar's leak from Wal-Mart in there (oily stuff with chunks and pellets in it). The leak totally stopped and the bubbles stopped. Car drove fine to Memphis without adding any coolant.
  5. Might try cleaning the TPS sensor as your code indicates wrong voltage at idle. I don't know how you clean it, but someone has mentioned it. Also the TPS on your TRAC (if you have it) is apparently the same. Could try swapping the sensors. If this works, just buy a new TPS. Good luck Larry
  6. On the top of my intake there is only one vacuum line. The other 2 are capped. Is this supposed to be like this? My car does have TRAC. Everything seems to work fine. Have included this picture from lexls to show the 3 lines. The yellow circle shows the lines. The 2 with yellow next to them are capped on mine. Is this the way it is supposed to be? Thanks Larry
  7. The stock nakamichi in my 94 LS400 sounds OK, but the tweeters have very low volume output. All of the other speakers seem fine. Does anyone know where the crossover is for the door speaker and the tweeter? I heard that both the tweeter and the door speaker were fed by same wire..... Is there a crossover in the door? Any idea what the problem may be (amp, crossover, bad tweeter) and where to begin troubleshooting? Or maybe the tweeters just don't put out very much.........' Thanks Larry Henderson