Skip the auto shop - Our mechanics make house calls

Q: Engine loses power, revs high, cannot shift gears - 2014 Nissan Rogue

asked by on

My car has been losing power while running lately. This happens only sporadically and weeks can go by without any problems. However, when it happens, it can be very dangerous and I'm concerned I might get into a collision. While I'm in the traffic and accelerate, the engine seems to lose power. The engine would ocassionally start revving high and I wouldn't be able to shift to higher gears. This happened on the highway as well as in the stop-and-go traffic. I went to the dealership several times but there is no solution to this problem yet. Do you have any idea what might be causing this?

A: Hello. It sounds like there is an intermitt...

Hello. It sounds like there is an intermittent problem with the throttle position sensor or the idle air control valve. These two sensors are made into the throttle body and the throttle body assembly would have to be replaced in order to fix the problem. There could also be a problem with the PCM not controlling the two sensors properly. To have this all checked, a certified technician, like one from YourMechanic, can come to your car's location to inspect the loss of power and shifting issue for this to be correctly repaired.

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・Save up to 30%

Get a quote

What others are asking

Q: My car surges forward after I hit the brakes

There seem to be a number of these complaints popping up, though there haven’t been any verified repairs made. Your best course of action is to take the vehicle to the local Kia dealer (as this may be a warranty...

Q: Car hesitating on acceleration.

Thanks for writing in about your Mazda 6. You need to make sure that the mass airflow sensor is not getting contaminated by an oil type air filter. If it is, replace the air filter with clean paper type one...

Q: Car will not spark on 2 coils - 1995 Dodge Stealth

You most likely have a bad ignition power transistor. I would however recommend replacing all three ignition coils with the ignition power transistor since they are the most likely cause of the transistor failure. If you have not done so...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.