Skip the auto shop - Our mechanics make house calls

Q: Why car surges when get in last gear n rpm goes up and down. shift good until last gear

asked by on

Why rpm goes up and down when gets to last gear..

My car has 208000 miles.
My car has an automatic transmission.

Automatic transmissions can be tricky. When diagnosing them, always start with the simple solutions first. Low transmission fluid can lead to slow and or no shifting between gears.

Check your owners manual for information on checking your vehicles transmission fluid. If you are low, refill and keep an eye on the level. You may have a leak in the system somewhere.

Another component to check without getting incredibly complex is the throttle cable. If the throttle is not responding correctly at certain points, the computer will struggle to demand the correct functions from the transmission.

Doing a scan for diagnostic trouble codes may help guide you to what the issue is. Transmission shift solenoids are another part that may cause these types of symptoms, but come with other symptoms you would have noticed as well.

If you need help with this, I would suggest having a certified technician, like one from YourMechanic, diagnose and service your vehicle at your home or office for an accurate repair.

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
  • Home
  • Questions
  • Why car surges when get in last gear n rpm goes up and down. shift good until last gear

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: Every 3-4 months, my car won't start. It does turn over though.

If your battery is weak or has bad connections to the battery, then you may have problems starting the vehicle intermittently. This is due to low voltage to the starter which is taking all the power, while the electronic ignition...

Q: light blinking wont shift right high rpm

Is the vehicle acting like the transmission is slipping? High RPMs without much power and large lack of acceleration? In this case, there may be a low transmission fluid level or the transmission assembly my be experiencing a failure. Have...

Q: Where is the heater fan blower motor relay located? 2003 Chevy Silverado 1500

Hello - the blower fan relay is located behind the glove box - small black plastic square. Make sure both fuses for the HVAC/heater are good, and have power to them (one is 10 amp, one is 30 amp). If...

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 Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...