sairick Posted May 21, 2014 Share Posted May 21, 2014 Have as 94 ls 400 stock far as I know have a problem with no power I had to floor it and manually shift it just to get up to 55 ... did a full tune up plugs , wires? Caps and rotors during the tune up I noticed a wire almost cut in half. It went into the block under the cap. Repaired the wires and taped them up so they didn't rub any more. Still didn't fix the problem So pulled front 2 cats down cleaned them out (litterally) still have no power xar gets up to speed if I floor it. But I don't have to manually shift it anymore so it's a bit better but still not working right. Where too next? 3rd cat? Tps? Any ideas? Quote Link to comment Share on other sites More sharing options...
sha4000 Posted May 21, 2014 Share Posted May 21, 2014 Is your car throwing any codes? Quote Link to comment Share on other sites More sharing options...
landar Posted May 21, 2014 Share Posted May 21, 2014 Yes, check for codes as a first step. Use this procedure -> http://www.lexls.com/tutorials/intro/codereading.html Did this behavior just suddenly occur or has it been progressively getting worse? How many miles and how long have you owned the car? Need a little background. Thanks. Quote Link to comment Share on other sites More sharing options...
sairick Posted May 22, 2014 Author Share Posted May 22, 2014 Will check codes tonight 229k miles had car forever and it's been getting worse slowly then all of a sudden it was just undriveable Quote Link to comment Share on other sites More sharing options...
sha4000 Posted May 29, 2014 Share Posted May 29, 2014 Did you get the codes yet? Quote Link to comment Share on other sites More sharing options...
sairick Posted May 29, 2014 Author Share Posted May 29, 2014 Yes sorry have 2 different posts . 13,21 and 28 were codes pulled from a computer scaner. I can remember the print out now but I have a post on the general maintain form about same problem 2 of the codes are o2 sensors. The third is something about em not getting signal when motor is over 1000 rpm. Quote Link to comment Share on other sites More sharing options...
sha4000 Posted May 30, 2014 Share Posted May 30, 2014 Where did you find someone with an OBD1 scanner? Anyway it seems from a little reading that you timing is out of whack from the code 13. That clipped wire was probably your cam sensor and since it was clipped the car ran rich which in turn most likely fouled up both oxygen sensors. With 229k when was the timing belt last done? I recommend changing both oxygen sensors and checking the wiring and connectors for the camshaft sensors as well as the crankshaft sensors. check this thread out. Maybe yo have the failing ECU but I would check tha LAST and pay attention to the codes first. http://www.clublexus.com/forums/ls400/412667-dtc-code-engine-code-13-a.html Quote Link to comment Share on other sites More sharing options...
sairick Posted May 30, 2014 Author Share Posted May 30, 2014 Will o2 sensors give it no power? Was told that if they get too bad computer goes into an open loop and just runs at a set mixture.. timing belt changed 32k miles ago should be fine. Fixed the wire with heat shrink removed the sensor. Cleaned .even repaired the out we r metal sleeve on the wire. It's a computer aftermarket for foreign cars . Quote Link to comment Share on other sites More sharing options...
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