Q: Paid $2900 for replacing 6 engine coils, replacing spark plugs & brake work. Cat converter now issue 2009 Buick Enclave

asked by on

I took my vehicle to the dealership & dreaded hearing the $2900 quote for repairs, much less to replace the bad 1 coil, told better off to replace 6 coils because they regular fail soon thereafter & then you incur labor charges all over. I sucked it up & paid. Drove great for 1 - 1 1/2 days. Then sounded sluggish. Check engine light came on in a few days. To dealership. Cat converter code. re-set it & said it didn't come back on so just drive it. Told me that replacing the coils probably caused fuel to enter the Cat and it would likely just burn off. Keep driving. Return if light came back on because then Cat converter needs replaced. Said $1200. I didn't have the $2900 let alone $1200 more. Comes a place when you have to stop pouring cash into the vehicle but I cannot afford to replace it. Wouldn't dealership be liable for the repair cost if they leaked fuel in to the Cat and ruined it in their pricey engine coil replacement job? I read fuel entering it ruins it.

My car has 122000 miles.
My car has an automatic transmission.

Hi there. The fact that the vehicle needed this work in the first place is what would have caused the converter to fail. When a cylinder misfires from bad plugs or coils then the excessive fuel will ruin a converter. The dealer is not responsible for the converter but they should have been able to tell you that it was bad prior to replacing all of the other parts. That would have then allowed you to make a better decision as to whether or not you want to fix it. I would bring this to their attention and they should give you a partial reimbursement due to the faulty diagnosis.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Paid $2900 for replacing 6 engine coils, replacing spark plugs & brake work. Cat converter now issue 2009 Buick Enclave

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car won't start after power steering pump replacement

I would recommend taking your vehicle back to the place that installed your power steering pump to have them verify their repairs. If the vehicle no longer starts after any repair has been done, it is likely due to something...

Q: Do all brake rotors need to be changed at the same time?

Hey there. You do not need to replace all 4 rotors at the same time, but it is recommended to replace the rotors and pads as a set for each axle front or back at the same time. If the...

Q: truck won't run at hight mph

Hello. The rear tire change would not have anything to do with the operation of the catalytic converter. There is however a possibility that when the catalytic converter codes came up that this triggered other issues as a result of...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...