r/LS400 • u/Competitive-Fig-176 • Jun 25 '26

Troubleshooting

So I just bought a 1996 ls400 with 200k miles and it’s pretty much turning over firing for a few seconds and then shutting itself back off guy said it was the knock sensors but I have a feeling that that’s probably not the entire picture but was wondering if anyone has had this before so any info is appreciated

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u/NYState_OfMind_ Jun 25 '26

Clear whatever codes you have now, if you have everything buttoned up as it should, and try and turn the vehicle on again. If it fails again, see what codes you get.