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Faulty ignition coil?

Old 12-06-18, 08:17 PM
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ArmandoGX
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Default Faulty ignition coil?

Hey guys. I was stopped at a red light the other night and felt the GX start to shake and jerk. CEL and 4LO light started to flash. Drove home turned off car and tried to look for something wrong but nothing. So i took the car to the Lexus dealer since it was still under warranty and turned out to be ignition coil #2 that needed to be replaced. Wondering if it's happened to anyone else with a 460?
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Old 12-07-18, 02:25 AM
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Acrad35751
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What year and miles?

Coil pack failure can occur on any vehicle but it usually shows up at higher mileage.
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Old 12-07-18, 02:37 PM
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Originally Posted by Acrad35751 View Post
What year and miles?

Coil pack failure can occur on any vehicle but it usually shows up at higher mileage.
2011 with 88k miles kinda low for that to happen. Maybe just faulty from the factory?
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Old 12-07-18, 04:09 PM
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i have a 2011 GX with 90k. Itís not under warranty. Any idea how much it cost? Just in case.
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Old 12-07-18, 06:15 PM
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Probably cheaper OEM but stock around $75

PN: 9091902256

Looks like it is basically used on all Lexus/Toyota models.
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Old 12-08-18, 01:28 PM
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Be very cautious when removing the COP plug. They can be pretty tight. If you pinch the tab and pull, you may end up pulling the wires out of the terminal. This is very common on the LS430. Your best bet is to use a pair of needle nose pliers to squeeze the tab and pull gently. If you pull straight up, they come right off. Good luck.
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Old 12-08-18, 01:47 PM
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Good tip. I am a long ways from doing this but will file this one away.

Originally Posted by Romanova View Post
Be very cautious when removing the COP plug. They can be pretty tight. If you pinch the tab and pull, you may end up pulling the wires out of the terminal. This is very common on the LS430. Your best bet is to use a pair of needle nose pliers to squeeze the tab and pull gently. If you pull straight up, they come right off. Good luck.
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Old 12-08-18, 01:57 PM
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Originally Posted by Acrad35751 View Post
Good tip. I am a long ways from doing this but will file this one away.
I just did the plugs on my LS430 and found them to be a lot harder than when I did my GX460 last year. Here is a picture I took for the LS430 spark plug thread. I would just make sure you use quality pliers that really grab and grip. These are Snap On Talon Grip. Doesn't take much pressure or force. The COP plugs are short enough were you can't get them mixed up at all.


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