Skip the auto shop - Our mechanics make house calls

Q: Car making loud noise and barely running.

asked by on

Emission light is on and car is making a loud noise when you push the gas pedal. It also runs rough when pushing the gas pedal. At first it was not noticeable, but now is very loud. The car will only go 40 MPH and barely runs.

A: This sounds like it could be a serious prob...

This sounds like it could be a serious problem for your car. My first recommendation would be to have this vehicle inspected by a certified mechanic as soon as possible to avoid these symptoms turning into larger problems. The list of reasons is quite long for the symptoms that your car is experiencing, but from my experience it definitely sounds like the engine may have gone into limp mode. Limp mode is a sort of fail safe that allows the vehicle to run enough to get it off the road, allowing you to park it safely in a spot away from traffic and freeways. From the description provided, it seems this is a problem you have had for some time and has eventually gotten worse with time. In my professional experience I highly recommend enlisting a certified mobile mechanic to diagnose why your check engine light (also known as an emission light) is on and help get your engine running in tip top shape again. It is important to not drive your Trailblazer until it’s been properly repaired, so the car does not incur more damage.

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: Ticking noise from engine after running with low oil from leaking oil pan.

Depending on the ticking noise will depending on if it is a camshaft follower or a camshaft noise. If your engine was ran without oil you may have low oil pressure at idle and the engine can get noisy if...

Q: camshaft position sensor is bad

Bank 1 normally refers to the side of the engine that the number one cylinder is located. However, since your vehicle has an inline six cylinder engine, you will only have one bank. Therefore, your engine should only have one...

Q: d4 blinks lost of power high idle

This is a transmission code indicating a problem with the transmission. This is most likely why you are experiencing the feeling of shifting gears at a low speed. This light blinking can indicate many different things. I would recommend having...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.