Skip the auto shop - Our mechanics make house calls

Q: Car loses power going up hill

asked by on

I have tried a temperature sensor, and oxygen sensor. Fuel pressure OK, timing OK. Could it be the coil?

My car has 225000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. I would recommend checking the mass air flow sensor as this is a commonly known part that can cause this kind of loss of power. This regulates the air intake into the fuel injection and ensures a proper air/fuel mixture. As you may know, when going up hill and altitude changes, so does air density which requires a change in the air/fuel mixture. When this sensor is faulty and this does not happen, you will likely experience this kind of loss in power. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as 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
  1. Home
  2. Questions
  3. Car loses power going up hill

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: Check Engine Light is ON sometimes and then it turns OFF and then turn back ON again

Based on the information you provided. Your crankshaft position sensor is the most likely cause of your concern. You may also see a p0339 code which is also a crankshaft position sensor code. I recommend having a certified professional inspect...

Q: Is my a/c going out or just the refrigerant?

Hello. If the AC is still blowing cold air then it is likely okay on refrigerant. Usually low refrigerant will result in hot air coming from the AC. The whining sound coming from the vents may simply be air escaping...

Q: Car's transmission not shifting properly.

Without being able to physically check the vehicle, I can suggest the basics. Make sure the transmission fluid level and condition are as they should be. Automatic transmissions are hydraulic and rely on fluid level and condition to properly operate....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...