Skip the auto shop - Our mechanics make house calls

Q: Check engine light flashing, sucking fuel, procrastinating when accelerating...

asked by on

Did a complete tune up,still running horrible.sucking down fuel, procrastinating when accelerating,super loud.throwing codes for a misfire on the 6th cylender, check coolant level, thermostat, coolant thermostat sensor.mechanic shop in town is not to be used with the aluminum.They cleaned all the grease out, put the plugs and coil packs back,replaced the intake manifold.ran like it was brand new for 2 days then it started the same thing.like you have to gun it to get the car to go, but once you're going you're good.pulled the coil pack off cylinder 6 and switched it with cylinder 2.That's all we did and it ran like new for 2, then the same thing.We are at a complete loss.Didn't unplug battery to reset check engine light, it turned off by itself...

My car has 185000 miles.
My car has an automatic transmission.

A: This is a very odd set of symptoms. I would...

This is a very odd set of symptoms. I would suggest ruling out any fuel-related issues as the poor fuel economy and lack of power could be related to faulty sensors like the throttle body sensor, mass air flow sensor, etc.

I would recommend checking for any trouble codes again after swapping the #2 and #6 coils since this did not fix the problem, but should have registered new data in the computer.

A Check Engine Light diagnosis by a qualified mechanic is a good next step.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Truck pulling to left.

There are a few things that may be the cause of your issues. First, your steel belt may have pulled to the outside of your tire. This is called radial pull. A quick way to check this is to swap...

Q: Idles roughly

Hey there. The intake gasket leaking will generally cause a lean fuel condition which can cause the idle to run high or poorly in the case of cylinders misfiring. The misfire may also be a result of of the intake...

Q: EPC Light is on and engine will not start

Hello, thanks for writing in about your Volkswagen Jetta. Did you check the output (volume) of the fuel pump? From what you've described, it sounds like you are not getting sufficient fuel to the fuel injectors. For an issue like...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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.