Posted 16 April 2012 - 08:49 AM
Posted 16 April 2012 - 12:41 PM
I have had all four coil on plug ignition modules fail over the last 2 years. One coil failed twice in that time. Car was bought 2+ years ago with 86k miles on it, now has 110k.
Coil failure evidenced by erratic engine performance and cylinder misfire code. Misfire code follows coil if switched to another cylinder. Once coil is replaced, engine runs flawlessly until next failure. Failures are random occurring 3-6 months apart. Last failure was 4 weeks since previous one.
The connection between modules and plugs are clean (no oil fouling) and tight. I checked wiring continuity between ECU and module finding no problems. I checked coil ground on all modules and, just for good measure, cleaned ground connections to engine block. Changed spark plugs to OEM recommended type. Still had failures after this.
The only component common to all coils that I cannot troubleshoot is the ECU. Can a bad ECU cause this intermittent problem or is there something else I'm missing?
Posted 16 April 2012 - 03:41 PM
Posted 16 April 2012 - 11:07 PM
Japs are real bad about grounding electrical components. I still remember a friend who had his <gasp!> Honda scarf down three computers, at $1700 apiece, before his smart-assed Honda Technician discovered the alternator wasn't securely bolted down. No harm no foul....except it cost him $5100 to get his $500 Honda fixed.
Posted 17 April 2012 - 04:40 PM
Posted 17 April 2012 - 06:08 PM
No longer working at dealerships. Government employee. Now i get paid to fix Fords.
ASE master tech
Private Pilot High Performance / Complex Rating.
Posted 17 April 2012 - 06:10 PM
Which is why i have never bought one of them. When you shop and compare part prices, Forget it. Jap scrap crap is usually more expensive part for part.
Posted 17 April 2012 - 09:07 PM
Posted 17 April 2012 - 10:22 PM
Posted 18 April 2012 - 01:07 PM
Posted 18 April 2012 - 03:06 PM
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