Showing articles & questions for topic
revving

Related questions

Question
While in park and stepping on the gas at 4000 rpm exactly the vehicles starts shaking.
The engine computer has a built in rev limiter built in to the programming that will not let the engine go above 3800 to 4000 rpms when the transmission is not in gear and driving down the street. This is...
Question
what would be the problem if the car starts and fail to move either forward or reverse and it revves itself when started?
Hello. If the van was moving fine prior to the wrong oil being put into the transmission then you may have a transmission failure. It the correct transmission fluid was not used then it can cause some serious internal transmission...
Question
At what RPM should my car be at while idling. My car is a 2000 Mazda 626 automatic.
Hey there. The specifications for the idle speed in gear for a 2.0 liter engine is 500 to 800 rpm. If you have a 2.5 liter engine the specifications are 550 to 750 rpm. Both of these rpm specifications are...
Question
In park, the engine just keeps revving.
Hello and thank you for contacting YourMechanic. There is an issue with the security system. The security is active and needs to be disabled. If the security is active, then the engine will act out and have a low rpm...
Question
RPM revs high
Hi and thanks for contacting YourMechanic. Check the IAC (idle air control valve) to the engine. This will cause the RPM's to fluctuate up and down to a dramatic amount. Look at the wiring to the IAC and make sure...
Question
Revs drop when steering is turned
You are correct on both actually. It is likely a failing power steering pump. When the pump binds up and creates an extra load on the drive belts. This puts the extra stress on all of the other components driven...
Question
Over revving and no power going up hill. .
Hi there. The problem lies within the gas pedal. The pedal position sensor has lost its counts and is telling the computer to rev up the engine to a higher count, but the sensor will not deactivate until the brakes...
Question
Oil leaked heavily out of my car while driving home while making a revved up noise.
Hi there. Check the engine for any oil leaks that are visible to you. Check the front seal, the oil pan, the oil filter, the oil drain plug (make sure its tight), the valve cover gaskets, the oil cooler lines,...
Question
Auto gear malfunctioning with engine and gear signal blinking on the dash.
Hi there. There is an issue with the engine causing the indicator lights to flash. There has been a loss of communication between the engine and the transmission and the computer will try to fix the situation. However, if the...
Question
Revs low when idle and falls when at traffic lights
Hey there. Even though you've cleaned the idle air control valve, that doesn't guarantee that the valve isn't still sticking or otherwise malfunctioning. You could try very gently tapping on the valve and see if that affects engine speed. The...
Question
Start up is okay. Blue smoke, rough idle, and stalling. Cannot rev motor. (2002 Nissan Elgrand)
The blue smoke is due to oil leaking into the combustion chambers. The cause can vary from fairly easy to fix worn out valve stem oil seals to more costly faults such as leaking piston rings or head gasket failures....
Question
It's not moving what's wrong?
Hello there, a few common faults will cause your 1994 Honda Civic to shut off when you push the gas pedal. The most likely faults are the fuel pump, shift linkage, Idle air control valve, fuel filter, vacuum leak or...
Question
When I get on the gas pedal my truck will rev then fall out but stay running
This can be caused by many different things such as low fuel pressure, dirty fuel injectors or potentially a failing fuel pump. As you know, the fuel pressure regulator controls the fuel pressure that the system maintains allowing the proper...
Question
Very rough idle goes away at speed. Can it be the cam solenoid?
Hey there. This may be related to a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...
Question
My car revs it's rpms when at park and drives itself to 25 mph without pressure on the gas pedal
This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...
Question
Car revs when turning the key
Hello - yes, you probably need a new throttle position sensor. The symptoms you describe are classic throttle position sensor failure symptoms. I would recommend having a Throttle Position Sensor Replacement Service completed by a mobile, professional mechanic, such as...
Question
engine rev up and down on idle
This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...
Question
My car jerks when putting it into drive and sometimes has to be revved up high before going into gear
The issue you're describing is typically an indicator of an internal transmission component failure or loss of hydraulic pressure inside the transmission. The change of the motor and transmission mounts probably did not hurt the Honda's ability to accelerate correctly....
Question
Transmission shifts into 1st and 2nd only. When it goes into 3rd gear, the engine revs up and seems as if the transmission is in neutral.
Hi there. According to the shifting charts to your transmission, third and fourth gear both use the Overdrive Clutch as a holder to get the gears with the Underdrive Clutch and the Fourth Clutch. Since your vehicle will only get...
Question
The car idles fine. It revs up but slowly drops RPMs.
Hi there: The idle is controlled by the idle control valve, mass air flow sensor, and throttle body of a fuel injected motor. Any of these components could be dirty, damaged, or have faulty wiring that is causing your engine...

Need a mechanic?

Our certified mobile mechanics make house calls in over 700 U.S. cities. Fast, free online quotes for your car repair.

Get a quote

Post a question and get free advice from our certified mechanics.


Ask a question