LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Replacing Ignition Coil

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Old 10-20-14, 12:55 PM
  #16  
RA40
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Don't buy a coil pack until you know for sure that the unit is bad. Swap them and verify that the misfire code is in a different cylinder. Then you know that pack is bad and can buy a new one. If the error code still indicates a misfire for that cylinder, buy a plug. Read the code again and if it's gone, the plug solved it.
Old 10-20-14, 01:07 PM
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aglick
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Originally Posted by RA40
Don't buy a coil pack until you know for sure that the unit is bad. Swap them and verify that the misfire code is in a different cylinder. Then you know that pack is bad and can buy a new one. If the error code still indicates a misfire for that cylinder, buy a plug. Read the code again and if it's gone, the plug solved it.
The issue is I don't have the tools to do this. I'm going to be borrowing someone else's tools in a different location (3 hours away from where I'm currently situated) so I'd rather have the part and not need it when I'm working on the car than need it and not have it. If it turns out Sears was wrong with their diagnosis I can always return the piece.
Old 10-20-14, 01:15 PM
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timmy0tool
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be careful about returning electronics. make sure sears will take the return. i know parts, especially ignition, does not carry a return policy in some instances.

as for the spark plugs, you should be spending about $60 on plugs. that's about $7 a plug, not $0.99 unless you prefer copper and want to do the job again in the near future. i recommend iridium, and yes replace all 8!
Old 10-21-14, 08:36 AM
  #19  
sha4000
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Originally Posted by aglick
The issue is I don't have the tools to do this. I'm going to be borrowing someone else's tools in a different location (3 hours away from where I'm currently situated) so I'd rather have the part and not need it when I'm working on the car than need it and not have it. If it turns out Sears was wrong with their diagnosis I can always return the piece.
I can understand if your just not comfortable doing the work but you have to have a a Auto zone/Pep boys/advance auto/Walmart/Napa somewhere close where you can buy a metric socket set and a couple of extensions for $30. Heck even Sears has tools. In either case let us know what the actual problem turned out to be and if you need more assistance.
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