Q: "no check engine light" missfire changed fuel filter spark plugs and air filter car wont accelerate past 20 mph even with foot to

asked by on August 24, 2017

i have no check engine light i change fuel filter and spark plugs sluggish driving now no acceleration past 15 20 mph even with doot to the floor souds like air coming in from intake manifold but i thought only coolant runs threw the the manifold system

My car has 3300000 miles.
My car has an automatic transmission.

You should have the computer scanned to see if there are stored codes. If no codes then check the air filter is not plugged and air filter housing is not blocked from getting fresh air in to it. You will need to then have the catalytic converters checked since they may be bad and partly blocking the exhaust.

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

Why Does the Air From My Air Conditioner Smell Bad?
Algae or Mold Growth The source of the smell (https://www.yourmechanic.com/article/why-does-the-air-coming-through-my-ac-vents-smell-bad) from your vehicle's heating and air conditioning system is the result of mold and or algae growth around the evaporator and the evaporator drain. When the growth of mold and...
Car can't engage gears.
The transmission on these cars have alignment dowels that align the transmission to the engine. the problem happens when the transmission has been removed for a reason. The reinstallation alignment of the transmission is not correct because the dowels are...
Coolant leak
Hello! The easiest way to locate a coolant leak is to have the cooling system pressure tested, which can be performed when the engine is cold. The most likely failed component would be the coolant pump. It's usually good practice...
Gear selector stuck in park
Hello. This is a common problem in both Chevrolet and GMC trucks and SUVs of that year. The safety system requires pushing on the brake to start the vehicle, so the problem is likely that the brake switch on the...
Engine bogs down in First
If the exhaust was blocked by the cats before, then some of the debris from the cats [catalytic converters] could have gotten into the pipe to the muffler, or blocked the muffler. Check to see if you can rev your...
Map sensor car won't start up good ?
Your MAP sensor is an important input for your computer. It helps determine the load on the engine to calculate the correct amount of fuel to inject. It sometimes takes a few seconds for the vehicle to realize that the...
Dash lights came on and gauges dropped to zero
Hello there, thanks for writing in about your 2006 Chevrolet Trailblazer EXT. First, I would suspect a faulty ignition switch (https://www.yourmechanic.com/services/ignition-switch-replacement), and would put that near the top of my diagnostic checklist. I also recommend a thorough visual inspection, testing...
Alternator problem, the wipper stops as soon as you take it to the highest,cracking sound in the morning that stop after cluching
Hello. From what you describe it would appear that the vehicle is experiencing more than one issue. The first thing I would address is the alternator, as a faulty alternator can leave the vehicle stranded if the battery dies. I...
Why do you want to replace both of the front brake pads at the same time?
Hello - brake pads normally wear relatively equally between the left and right side. This indicates that the brakes on each side are working properly. A frozen caliper, or sticking caliper slide bolt will cause a wear imbalance, and should...

Related articles

How Exhaust Systems Work
It It all starts in the engine In order to understand how the exhaust of a vehicle works, there must be a basic understanding of the engine as a whole. The internal combustion engine in its simplest form is a...
What Does a Catalytic Converter Do?
The The modern automotive exhaust system is much more advanced than what was available even just a couple of decades ago. After recognizing that the average automobile was one of the primary sources of global pollution, the US government enacted...
A Buyer's Guide to the 2012 Lincoln MKX
As As far as midsize SUVs go, the 2012 Lincoln MKX is one of your best options out there. Considering its price, Lincoln packed this vehicle with a ton of power and luxury. Although it bears a strong resemblance to...