Skip the auto shop - Our mechanics make house calls

Q: RPM goes up and down

asked by on

Hesitation

My car has 92100 miles.
My car has an automatic transmission.

The very first thing to do when you experience power loss or surging issues, or interesting gauge readings, is have your vehicle scanned for diagnostic troubleshooting codes. Your car can set these codes and not always illuminate the Check Engine Light. So always try to scan your vehicle right away. You will want to look into cleaning some part of the engine. Look into removing the EGR valve and cleaning it well. You may also have a bad sensor, and this is another reason to scan the vehicle. I suspect the ICP (ignition control pressure) sensor. Other abstract issues may be poor oil quality or a turbo issue. But these are less likely. Have a certified professional diagnose your RPM concern in person so that this can be addressed.

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

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: Whats the cause of a whining tramsmission, blinking overdrive light, hesistant to shift properly?

As a rule, I NEVER change the transmission fluid on a vehicle with that high of a mileage unless it has replaced regularly throughout the life of the vehicle. Replacing fluid that is thick with new fluid can cause issues...

Q: My truck bogs down when I accelerate going down the road

This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected...

Q: Car blows white smoke

Hi there. White smoke can come from the exhaust on this truck for a number of reasons. The most common cause is a failing fuel injector that is allowing excessive amounts of fuel to enter the engine. It can also...

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...
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...
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.