Dr. Drake Posted April 22, 2010 Share Posted April 22, 2010 Just bought a 93 sc400 and cannot get the thing started. Cranks but will not fire up. Replaced ECU, caps, rotors, and plugs. Basically the end result is the LH cap is not producing any spark. I have spark out of the coil wire into the cap but nothing coming out of the cap itself. I am a mechanic but new to the Lexus/Toyota V8. I'd like to see if I could nail this down before I throw any more parts at it. My guess is a cam or crank sensor, but any feedback I could get would be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Dr. Drake Posted April 25, 2010 Author Share Posted April 25, 2010 Ok so I went through and cleaned the cam sensors and now I'm getting spark on all cylinders. This brings me to my next problem. The fuel pump does not come on when I turn the key. It works when I jump it through the diagnostic connector but does not work otherwise. And the car still will not start even with the jumper wire in place. I opened the line and there is plenty of pressure. Has anyone dealt with this before? Quote Link to comment Share on other sites More sharing options...
sc400InTraining Posted April 29, 2010 Share Posted April 29, 2010 Ok so I went through and cleaned the cam sensors and now I'm getting spark on all cylinders. This brings me to my next problem. The fuel pump does not come on when I turn the key. It works when I jump it through the diagnostic connector but does not work otherwise. And the car still will not start even with the jumper wire in place. I opened the line and there is plenty of pressure. Has anyone dealt with this before? I have just look up my name and look through my posts for the solution it should be my most recent topic that your looking for. It gives details on how to fix the problem your having Quote Link to comment Share on other sites More sharing options...
Dr. Drake Posted April 29, 2010 Author Share Posted April 29, 2010 I didn't find anything in your posts. Quote Link to comment Share on other sites More sharing options...
Dr. Drake Posted July 29, 2010 Author Share Posted July 29, 2010 Got it looked at and it turned out that one coil was dead, the other was going out, and the fuel pump ecu was bad. Two new coils and jumped the fuel pump and it runs like a champ. Hope this helps someone. Quote Link to comment Share on other sites More sharing options...
ikeim2345 Posted July 9, 2011 Share Posted July 9, 2011 what did u clean the cam sensors with im not getting no spark and how did u jump the fuel pump Quote Link to comment Share on other sites More sharing options...
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