Skip the auto shop - Our mechanics make house calls

Q: RPM fluctuating when the car is in third gear during acceleration

asked by on

My car has gone around 130,000 miles. The RPM seems to be fluctuating when the car is in third gear and I give it gas. It increases, then drops down and again increases and yet again loses power. Is this a transmission issue? What should I do? Thanks.

It sounds like your transmission is either slipping in third gear or having trouble shifting to fourth gear. I would recommend having this issue diagnosed by a certified transmission mechanic, as soon as possible, as this could potentially cause internal transmission damage. This issue may be repaired by replacing a shift solenoid, replacing the transmission fluid, or performing a complete transmission overhaul. With that in mind, it is important to have this issue diagnosed correctly to avoid wasted time and money. A certified mechanic, such as one from YourMechanic will diagnose and inspect why your transmission is slipping in third gear, when accelerating.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Driver's door not opening

The rear doors have a child safety selector in the door jam that will not allow the door to be opened from the inside door handle, if the lever is selected to lock. The door should be able to be...

Q: Transmission falling out of high gear

Hi there, thanks for writing in about your 2004 Ford F-150. Check the transmission fluid level. Changing the fluid filter may help temporarily but it sounds like the clutch packs in your transmission may be worn to the point of...

Q: Transmission problems

The problems you are having may be due to a sticking throttle control, or possibly a transmission shifter control problem. These vehicles have an electronic throttle and if you try to push on the brakes and the throttle at the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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.