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: Steering wheel problem, hard to turn after stop.

Hi there, With 77,000 miles on your 2011 Buick Enclave, I wouldn't expect your issue to be mechanic in nature. In many cases, the problem's you're describing are caused by low power steering fluid, or if your power steering is...

Q: hearing loud clicking when I accelerate, when foot off gas, reduced sound, sometimes step on gas and its gone

Hi there. In most cases, a tapping sound will come from two areas; the top of the motor or the axle shaft area. With the engine, the tapping noise is either lack of oil lubrication in the top of the...

Q: Sputtering and popping with a loss of power. Most recently died and after driving cat converter was cherry red hot.

Hi there. There could be an issue with the spark plugs not firing causing excessive amounts of hydro carbons (raw fuel) to go into the exhaust system. When excessive fuel goes into the exhaust system, the catalytic converter will glow...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.