Q: When am driving,especially above 15km/h and then step on the clutch,the rpm starts varying from 1000-3000.what can cause that

asked by on

I used to have bad idling,i cleaned the air intake valve.After like a week of driving,i noticed that when i step on the clutch on high speed especially when the car is on gear,the RPM starts to fluctuate from 1000-3000 which then stabilises when i disengage the gear.what can be the problem

My car has 400 miles.
My car has a manual transmission.

This can happen when the idle air control valve is dirty or not working properly. This is a unit that monitors the air/fuel mixture at idle speed. This can also happen when the mass air flow sensor is not working properly. This monitors the air/fuel mixture at higher speeds, but can cause a similar symptom when you are at higher RPMs. I would recommend having an expert from YourMechanic come to your home to diagnose and repair the idling issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. When am driving,especially above 15km/h and then step on the clutch,the rpm starts varying from 1000-3000.what can cause that

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: rpm 1500 when driving with 80 mph

You may be driving with different size tires from the original size. If you are, then it may change what your speedometer is reading compared to road speed you are actually going. If you have a GPS or use the...

Q: Car shakes violently and 'check engine' flashes

Since you are only getting a misfire on cylinder number 3 specifically, this informs me that the cylinder ignition is not the problem. Since the engine has a coil pack that powers two cylinders at the same time and if...

Q: clutch not working properly - 2003 Mazda Protege5

Hello, a transmission expert will need to further diagnose the issue. There are several other things we will need to know to further determine the cause and solution. Most likely, there has been a failure with a component inside or...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.