Skip the auto shop - Our mechanics make house calls

Q: My car is sluggish and struggles going uphill.

asked by on

My car struggles to go up inclines and hills. The revs jump around when I try to accelerate but it struggles to get up to a certain speed. I am concerned with this because this could be potentially dangerous for me when on the interstate. Could it be the accelerator? Fuel pump? Transmission Range Sensor?

My car has 139500 miles.
My car has an automatic transmission.

Hello. If the engine revs up and the vehicle is not responding then it is usually caused by a slipping transmission. If it is just a power loss, then the issue may be a bad catalytic converter clogging the exhaust. I usually scan the computer first for codes to see if anything comes up. Any codes can indicate what may be going on. If there are no codes then I usually move on to test the fuel pressure and exhaust back pressure. If both of those are fine then a pressure test of the transmission must be done, but from your description it does sound like a transmission issue. If you want to have this diagnosed, consider YourMechanic, as a certified mechanic can come to your home or office to inspect your acceleration issue and determine what repairs are needed.

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

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: Hi Tim, what should I expect to pay to have the right front output seal replaced on my 2001 infinity g20

Hi Nancy. It really depends on where you have the CV axle shaft assembly replaced. If it's completed by a local mechanic shop, prices can range anywhere from $250 to $400, dealerships tend to charge 30% more in most cases...

Q: Car in gear, but not moving

Hello. If you have a 4x4, it may be in neutral. Check to see how long it has been since you serviced the transmission filter and fluid. Then, ensure that your transmission fluid is full. At this point, the next...

Q: On CNG, engine often give a sound of misfiring and got stop, while on petrol no such issue

Hello. The symptoms you are experiencing can be caused by many things. A few things I would look into are the fuel system, the engine management system, and the ignition system. If any of the components, such as the fuel...

Related articles

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.