Skip the auto shop - Our mechanics make house calls

Q: When reducing speed and then trying to accelerate again car seems to struggle (rpm start going up) but the mph don't

asked by on

My 07 maxima happens to struggle when I reduce speed and then try to accelerate back to a higher speed. Had it diagnosed and was told to replace TCM, did so and the car is still having the same issue. Seems to only do it when reducing to around 20-40 and then when trying to accelerate again. On Highway and going at higher speed the problem doesn't persist so I don't believe it's a transmission problem. it'll change gears properly, perhaps an electrical problem? Thank you

My car has 99688 miles.
My car has an automatic transmission.

A: Hello. I would usually start by scanning th...

Hello. I would usually start by scanning the computer for codes. This would tell me if the computer is seeing anything out of the ordinary. If there are no codes, then I monitor the output of the sensors as the air flow meter can cause this. If everything is reading right, then it is likely a transmission issue. The CVT will act like this some of the time and work improperly other times. This is very common on this car. Changing the fluid will help some of the time, but not too often. If you need to have this scoped out, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the loss of power and have this addressed appropriately.

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: What does the Malfunction Indicator lamp on the dash mean?

Whether you call it by its proper name, or refer to it as the Check Engine Light, the Malfunction Indicator lamp (MIL) is a very critical warning system. It’s designed to turn on when something goes wrong with your emissions...

Q: On interstate, after 15-20 seconds car loses acceleration

Hello. Thanks for writing in about your 2007 BMW 335xi. It sounds like the thermostat may be sticking. The thermostat needs to be checked and the cooling system needs to be checked to make sure that the coolant is flowing...

Q: Motor smokes

Hi there. If the engine is smoking in the engine compartment area, you probably have a leak. When engine oil leaks out due to a bad gasket, it hits a hot engine part causing the smoke. This causes the oil...

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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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.