Q: Car likes to make a chugging noise when accelerating up a steep hill. It usually happens around 55 mph.

asked by on

Whenever I am driving up a steep hill and accelerate to 55 the car starts to chug, I had my mechanic check the transmission And said he haven't seen any problems.

My car has 107058 miles.
My car has an automatic transmission.

Hi there:

In many cases, when your Malibu begins to struggle when you’re climbing a hill it’s more of an indicator of fuel system issues; such as a clogged fuel injector nozzle or dirty throttle body. It could also be an emission system component like the EGR valve that is causing the inconsistent or chugging issues. Sometimes simply cleaning these components will improve the overall efficiency of your engine. However, to be certain, you might want to contact a local mobile mechanic and have them complete an inspection on the rough running engine.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car likes to make a chugging noise when accelerating up a steep hill. It usually happens around 55 mph.

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: Car hesitates or stalls before accelerating. Diagnostics test says: Bank 1 System too lean.

Hi there. Yes, a torn throttle body hose will definitely cause your concerns. Taping the boot is not a proper repair, nor will it correct the situation. The boot has to be replaced. The torn boot is allowing unmetered air...

Q: Q: Car not accelerating

This issue could be caused by something as simple as the emergency brake being left on, but that is usually the first thing that would be checked. If the emergency brake is off then there could be an issue with...

Q: Won't start - not getting fuel into the injectors

Hey there, thanks for writing in. Lack of fuel pressure here often points out a clogged fuel filter. I would have an experienced technician inspect the fuel system and check pressure at the fuel feed line under the hood. The...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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.