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RPM (Revolutions Per Minute)

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How to Monitor Your RPM Gauge to Get the Best Performance Out of Your Car
A car tachometer, or RPM gauge, shows the speed the engine is spinning. Watch your RPM gauge to improve your car's performance and fuel efficiency.

Related questions

Question
Car feels like it want to launch more pressure on brake than usual rpm jumping up and down when in neutral or park
Hello, thank you for writing in. Unfortunately, there are a large number of components that can cause this. The vehicle needs to be scanned for diagnostic codes. Even without an engine light on, there may be code present pertaining to...
Question
The rpm jumps up and down about 300 rpm when accelerator is constant. Only seems to happen when traveling between 40-50 mph
Hello, thank you for writing in. The truck may be having issues with air sensors, fuel pressure, or other electronic issues. I have have to replace the fuel module and the mass airflow on my 1998 S10 with 168,000 miles....
Question
engine revs up and down when in park and it dies when puts in drive
Hello, thank you for writing in. There a large number of components that can cause these issues. If you have not scanned the vehicle for diagnostic troubleshooting codes, you will want to do that first. Even without a check engine...
Question
Why does my 199 Honda Civic act like it has a governor on it?
Hi there. This can be caused by a number of things, but if you are getting the codes that you mentioned then you may have a voltage supply issue. If you have this issue on both of these circuits it...
Question
My cars RPMs rev up and down
Hello, and thank you for writing in. Typically when the engine behaves like this, you are looking at an air issue. You will want to focus in on the air intake, mainly the throttle and throttle position sensor. You may...
Question
car accelerates on it's own
Hello, thank you for writing in. With some further investigation, you will see that there is a problem with Toyota and their hybrid vehicles pertaining to sudden acceleration or stopping. You will want to contact the service department again and...
Question
Random revs while in P
Hello, thank you for writing in. There are several reasons why the idle would be high when starting. You are also not the only one having issues like this. To being, research your VIN and find out if there are...
Question
Short ram intake installation
Hi there. If the problem started after changing out the intake manifold on you engine and the car is new, then the issue is to be a vacuum leak on the engine. Check around the manifold for any loose bolts,...
Question
Shaking on acceleration over 3,000 rpm.
Check the engine for a misfire. Check the spark plugs and see if they are working and if there is park to the spark plugs. If the spark plugs are clean and there is spark to the spark plugs, then...
Question
Truck runs great until I get around 2,000 rims, then it starts missing and cutting out until I get below 2000 rpms
Hi there. The fuel filter could be plugged up causing the demand for fuel flow to drop making the engine starve for fuel when running at a higher speed. Check the fuel pressure on the fuel rain and run the...
Question
Help
Hello, thank you for writing in. The symptoms you are having can be caused by low fuel pressure, or low airflow. The idle air control is responsible for keeping the throttle open at idle speed when the clutch is in...
Question
When car in park the engine accelerates
In the majority of vehicles, engine idle speed is controlled by an idle control valve (ICV). A faulty or blown fuse in other electronically controlled systems can cause the IAC motor to malfunction, leading to a higher than normal engine...
Question
hi I have a holden commador, vt, 1999 model. when I accelerated just leaving my drive way my revs go up to 4. what could be causin
Hello, thank you for writing in. While there are several components that can cause this issue, you may be looking at a torque converter or transmission issue. You may want to start with a transmission service including the fluid change...
Question
My car will go down the road but rpm runs around 4 won't shift do you think it's just low on fluids
Hello, thank you for writing in. Low transmission fluid will absolutely cause the issues you are having. Checking the level and condition should be top priority, and if you have not changed the fluid and filter yet, consider doing so....
Question
Why would my car drive at 0 rpms ? It's a 2011 Hyundai Accent.
Hello, thank you for writing in. The gauge on your dashboard that tells you the engine speed, measured in RPMs, is called the tachometer. If just the tachometer is not working, it may be getting a weak signal (or no...
Question
I've got a ford focus 1.6 engine. Whenever the engine gets a little warm and as the clutch is pressed down to change gears, the rpm's increase.
Hi there. There could be a few different issues that could be contributing to your current condition. There could be a vacuum leak causing the engine to rev up when there is no load applied to the engine. The Idle...
Question
My Camry is starting at 2000 rpm's.
Sounds like there is a vacuum leak that is causing the engine to rev up high. If there is no vacuum leak, then the Idle Air Control Valve could be stuck causing the engine idle to fluctuate on startup. I...
Question
Car vibrates when shifting at 3krpm but not 2 or 4 and vibrates when moving at 3krpm why?
Hi there. The engine's harmonic balancer or the flex plate could be bent causing the engine to have a vibration when operated between 2,500 to 3,000 rpm's. I recommend seeking out a professional, such as one from Your Mechanic, to...
Question
Car rough idles sputters and jumps rpm after changing ignition coil cap and rotor.
Check the spark plug wires on the distributor and on the engine. It seems that you have one or more wires crossed and the engine is firing on the wrong stoke causing the engine to run rough and make the...
Question
98 Nissan quest jerks, skips, and rpm's bounce, when it warms up.
Hi there. The symptoms sound like the fuel pump relay is getting hot and cutting off the fuel pump. Check the fuel pump relay and see if its getting hot. If the relay is getting hot, then the fuel may...

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