Q: Engine misfiring

asked by on May 19, 2016

At idle, my steering wheel vibrates a little and the engine feels like it's misfiring. This year I have changed the spark plugs and O2 sensors in my car, as well as the engine mounts and upper transmission mount.This is driving me nuts. If I turn off the car, it almost has a diesel effect: rumbling and shaking a little before it stops. Are my spark plugs going bad again? Would this be a coil pack? The check engine light never comes on.

Engine is misfiring Inspection $79.99 - $99.99 Get a Quote

On a modern car such as yours, the Check Engine Light should come on for a misfire. There is a technical service bulletin (TSB) # 11-007 which states the front engine mount can cause vibration and knocking from the engine compartment.

You said you replaced your motor mounts, but did you replace all of them? According to the repair diagram, it looks as though there are 5 mounts, including the transmission.

This is the kind of problem that can only be diagnosed firsthand by a professional, such as one from YourMechanic. I suggest you give the team at YourMechanic a call to diagnose the misfire issue.

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

Its a truck

What can cause a rattle in the front end while driving straight, that goes away when you turn any degree?

Depending on the condition of the brake pads, they may also cause a bit of rattling if they are in need of being replaced. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect...

I changed the break light switch and now I can not get the truck out of park

Hello, thank you for writing in. The vehicle may be having issues the with ABS system. Considering the timing with the brake light switch, you will want to verify that installation and make sure it is clean, dry, and tight....

Blind Spot Detection/Cross Traffic Warning.

Hi there. Try removing the battery cables from the car battery and let the computer (ECM) reset. This will clear any messages on the vehicle. Then the computer will relearn the information from the mirror. If the mirror is working...

What other cars could fit my engine?

Corolla 1.8L engines for model years 1998 through 2008 all used the same head casting and the same block casting. However, beginning in August 1999, and continuing through model year 2008, all of the 1.8L engines were equipped with variable...

Air conditioning light - 2001 Honda Civic

Hi there, check the A/C relay for being stuck in the "On" position. Relay contacts degrade over time and use, and can stick together when burned. The result would be the A/C light staying on, even though you press the...

How does the ventilation system work?

Sometimes you don’t want the heat or the air on in the car. The ventilation system is designed to circulate fresh air from outside the car into the cabin. To use this system, follow these steps: Turn the temperature...

Related articles

What Is Engine Displacement?
Engine displacement is the swept volume of pistons inside the cylinders. Displacement has an impact on increasing car power or fuel efficiency.
How Long Should an Engine Last?
A car engine can last hundreds of thousands of miles. Get your oil changed often and don't ignore car warning lights to make your engine last longer.
How Do I Prepare My Car for Summer?
Summer's Summer's heat, dust, and stop-and-go traffic will take their tolls on your vehicle. Follow these tips to ensure optimum wellness of your car: Air Conditioning: Have your air conditioning inspected by a qualified technician. Newer models have...