No spark from coils

2000 LEXUS RX 300
118,000 MILES • 6 CYL • 4WD • AUTOMATIC
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JOEFROMTX
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  • 3 POSTS
Lexus 300RX, changed the spark plugs and now the three front coils will not put out a spark.? Need some help... What sends power to the coils? Do I need to check anything? Codes: po302, 304 and 306. Thanks...
Dec 13, 2010 at 1:16 AM
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KHLOW2008
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The codes indicates a misfiring, not necessarily the ignition coils are not sparking. If problem occurred only after replacement of spark plugs, I would suggest rechecking the plugs because it sounds like one of the plug spark gap is completely closed.

Also check the wire harness and other connector for looseness.

All 6 coils receives power supply from the same source so there should not be any problem with that.

Please let us know if you need anything else to get the problem fixed.

Cheers
Dec 14, 2010 at 4:55 PM
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BILLWANAMAKER
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Checked for spark at four different coils and have none. Checked ignition fuse it was good, immobilizer seems to be okay. No security light flashing which would mean fire it is armed, crank sensor bad ?
May 23, 2018 at 10:30 AM (Merged)
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