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LS 4000

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  • Lexus Model
    LS 400

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  1. No im still having starts and no starts. I also changed out the crankshaft position sensor with no luck i haven't changed the camshaft positon sensors yet, just got those in. Also OBD1 codes 17 & 18 are for the cam shaft sensors don't know why lexus would tell you 13 and 14 are... maybe call another dealer. Good luck
  2. I've posted about my intermittent starting issue. Now i have gotten the CEL codes for my car. Im getting codes 21 and 31. These are air flow meter signal and main oxygen sensor signal would either of these make the car not start at times? and other than than the o2 sensor what should I replace for the air flow sensor code. here is the procedure i used to get the obd1 codes for my LS400 http://www.lexls.com/tutorials/intro/codereading.html Thanks !!! B)
  3. well when i try to start it the engine just cranks without firing, i pulled the wire from each coil pack im not getting any arcing, a mechanic suggested changing the crankshaft position sensor but so far ive only been able to locate references to camshaft position sensors online..... my original thought of fuel was just me trying to eliminate causes i figured the worst that could come of that was the fuel components being replaced :( :(
  4. My 1990 LS400, would start sometimes and not others it smeems at ramdon. I have replaced the fuel pump, fuel filter, and fuel pump relay now it still starts sometimes and not others any suggestions???? :o
  5. Put a new battery in and changed fuel pump relay no more dash light blinking, but still starts sometimes and not others !!!!!!
  6. I checked the wires, someone had cut them and sorta taped them up. I reconnected and taped them, car started waited couple hours car starts again. Next morning no start again !!!! still with this flashing of the dash lights if car starts the lights will flash and click 4 times and then car tried to abruptly stop or lights flash 2 or 3 times with no attempt to stop engine. Any suggestions anyone Thanks
  7. I recently purchased a 1990 LS400, when i bought it car started fine and i didn't drive it far (couple miles) my plans are to restore the vehicle. Now that i have the car home it statrs sometime and other times it just cranks without firing. The fuel hand was slightly below 1/4 tank so i pour 2 gallons of fuel in, cars started right up. Few hours later car wouldn't start poured more fuel in car started again. Next day car wouldn't start, so i changed the fuel filter then poured in gas that had drained from filter change car started again. Next Day, you guessed it no start. Also the instrument cluster lights blink three or four times after i try cranking it sometimes. does anyone have any suggestions on what might be going on!! Car starts sometimes after pouring in fuel Blinking Dash lights When the car does start it's an instant start and the engine idles string and smooth. Could this be a security system problem, fuel pump, relay, fuses Thanks for any help
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