Coil problem

2005 TOYOTA HIGHLANDER
48,000 MILES • 6 CYL • AWD
Avatar
SANDIRC
  • MEMBER
  • 1 POST
I took my Toyota Highlander in for service 10 days ago and got a clean report. This weekend my check engine light went on I took it in to the toyota dealer they are telling me a coil went bad, isn't that something that should have shown up on the diagnostics that were done 10 days ago? And how common is this problem?
Feb 21, 2011 at 6:14 PM
Advertisement
Avatar
MMPRINCE4000
  • ✓ASE Certified Mechanic
  • 8,548 POSTS
  • ASE Certified Mechanic
Coils do go bad, and there is no timeframe, so they may have been OK when they checked them eariler.
Feb 21, 2011 at 6:30 PM
Avatar
BPL686
  • MEMBER
  • 2 POSTS
2003 front wheel drive Highlander 4 cyl. 85000 miles. Replaced 7 coils within a year. Toyota dealer, no satisfaction. This is such a nice vehicle, and hope to find a answer to resolve this problem.
Mar 20, 2012 at 1:27 AM
Avatar
BPL686
  • MEMBER
  • 2 POSTS
Oh forgot to add 1 owner!
Mar 20, 2012 at 1:30 AM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
I would use OEM coils because there is many coil manufacturers out there that use cheap materials to make their coils. Also check the engine ground strap from the block to the frame. This can cause load on the coils as well.
Nov 8, 2022 at 10:29 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.