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

asked by on August 29, 2016

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.

Check Engine Light is on Inspection $94.99 - $114.99 Get a Quote

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do you operate the hazard lights?
If you are ever stranded on the side of the road, you’ll need to use your hazard lights to warn other drivers of your presence. Depending on where you live, it may also be legal to use your hazard lights...
Grinding and vibration from front tire.
Yes, without hearing the noises or being able to inspect the vehicle it is hard to determine with any accuracy what the items could be. You can have a certified mechanic, like one from YourMechanic, and schedule for someone to...
Transmission fluid leak
A leaking transmission is definitely a reason for concern. Lack of fluid can prevent the transmission from shifting properly and eventually leave you and your vehicle stranded if it is left unresolved. The information provided on your Buick is a...
P0500 Vehicle Speed Sensor A
Hi there, thanks for writing in. The reason you are having issues finding the sensor is because the vehicle speed information for you model is sent from the Antilock Brake System module. You will need a higher end diagnostic scan...
what is the black box with three plugs that is under the dash on the drivers side.
It sounds like you are describing the BCM (Body Control Module) (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-electronic-brake-control-module-ebcm). It usually has 3-4 connectors. Saturn vehicles are unique. Like many vehicles, there are not any other vehicles that I know of that you can use for parts....
Car stoping at low speed
Hello. Being you just had transmission work I would suspect an issue with your torque converter which sits between the engine and transmission. The torque converter is designed to speed up and slow down in correlation to engine speed with...
Cost to replace engine in a 2002 BMW 325i
Hi Ernesto. Thanks for sending in your question. Unfortunately, replacing an engine is not a service our mobile mechanics could offer, so you'll have to contact a local BMW specialist to receive an estimate for replacing the engine on your...

Related articles

The 10 Transmission Problems to Never Ignore
There’s nothing quite like transmission problems to stress out the average car owner. They are, at best, inconvenient and, at worst, very expensive. Proper...
P2012 OBD-II Trouble Code: Intake Manifold Runner Control (IMRC)Circuit Low Bank 2
P2012 P2012 code definition Intake Manifold Runner Control (IMRC) Circuit Low Bank 2 Related Trouble Codes: P2004: IMRC Stuck Open Bank 1 P2005: IMRC Stuck Open Bank 2 P2006: IMRC Stuck Closed Bank 1 P2007: IMRC Stuck Closed Bank 2...
P2671 OBD-II Trouble Code: Actuator Supply Voltage B Circuit High
P2671 means there is a fault in the B circuit actuator caused by any multitude of electrical issues or problems.