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sprinkles08, ASE Certified Technician
Category: Lexus
Satisfied Customers: 22670
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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I have a 1996Ls 400 with about 2k miles. All of sudden

Customer Question

Hi, I'm Leroy, I have a 1996Ls 400 with about 2k miles. All of sudden random misfire code came up p300,p3o1,305
Submitted: 1 year ago.
Category: Lexus
Customer: replied 1 year ago.
I have 200k miles instead of 2k.
Customer: replied 1 year ago.
Why can't I chat with a tech?
Expert:  sprinkles08 replied 1 year ago.
Hello and welcome to Justanswer!
There are quite a few things that can cause a misfire, it looks as if you ruled out the ignition system provided all the parts replaced are good. It isn't unheard of for spark plugs to be damaged in transit.
You may have injector issues on those cylinders, loss of injector driver due to an engine controller or wiring issue, it may be fuel quality or cylinder sealing issues.
Did the problem start not long after getting fuel?

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