Car is new nissan versa warm up car idles down then shoots back up like something is kicking on then idles down then revs back up

Car is new idles up and down when warmi up like something is kicking on and off and nothing is problems with going up upgrade roads sounds like something is kicking on and off please help

My car has 126 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hello. Depending on the road you are driving on and if here is extra weight in the vehicle then this can occur. This is usually compensation for the lack of power that the engine puts out. With that being said it should be minimal. If it is very noticeable then you may actually have a programming issue or a faulty throttle body. Both are common on this vehicle. It sounds like the vehicle is still under warranty so I would take the vehicle to the dealer.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

The most common reasons a Nissan Versa engine stalling are the fuel system, the air intake system, or the ignition system. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
An indication that a vehicle is not receiving the right mixture of air and fuel is if the vehicle jerks or surges forward at high speed. Several components of the fuel or air intake system could cause this jerking or surging sensation to happen. Issues within these systems can also cause fuel economy to worsen.
Common reasons for this to happen:

Loose connections at the positive and negative battery terminals. Very dirty or clogged air filters can also cause your engine to underperform. Loose timing belts are another likely cause. A mechanic will check these and replace them if they appear loose and worn.

Fuel injector nozzles can become clogged over time, which can lead to a sputtering engine, slow acceleration and the car not having enough power. Fuel injectors can be cleaned if the problem is caught early, but as the conditions worsens, the injectors may have to be replaced.
Dirty/Faulty Fuel Injectors – Fuel injection systems play an essential role in starting your vehicle. The system injects fuel and air into the cylinders. If clogged or gummed up, the injectors don`t provide the right mix of fuel and air, resulting in a rough idle or slow acceleration.
The most common problem is a faulty fuse. In modern vehicles, engine idle speed is most often controlled by the idle air control (IAC) motor. This can be impacted by bad fuses in many different electronic systems in your car. Next, your high idling could be caused by a computer malfunction.
Worn out or old spark plugs can cause engine sputtering and other ignition issues. Spark plugs are important to ignite the fuel once it is inside the engine. Partial ignition can lead to leftover fuel in the engine and cause misfires. If your spark plugs looks old or dirty then it might be time to get a new set.
If you`re driving at freeway speeds and notice your engine sputter or jerk, you may have a failing fuel pump. This problem is caused when the fuel pump can`t deliver a smooth flow of fuel to the engine; periodically, your engine receives only air when it was expecting to receive fuel.
Motor mounts: It`s the job of the motor and transmission mounts to dampen vibration. When they break, you`ll feel excessive vibration, especially at idle. You can diagnose this yourself by putting your car in neutral. If the shaking lessens, you very well could have broken mounts.
A car`s engine vibrates when idling typically at optimum levels. The transmission gears, rotation of the crankshaft, and other components cause slight vibrations when your car is normally in motion. However, in case there`s too much vibration when the car is idle, there is something wrong with the engine.
One of the most common causes of a sputtering engine is an issue with the vehicle`s fuel system—the filter, pump, and injectors. These three critical components work together to ensure fuel flows smoothly from the fuel tank to your engine`s fuel injectors, and then pumps into the engine evenly.
Worn-out spark plugs or the electrical cables attached to them are one of the most common causes of cars stuttering. A deficient spark plug causes the engine to misfire, making your car jerk when you accelerate.
Common reasons for this to happen:

Low fuel pressure, dirty or defective fuel injectors, or broken fuel pump: The fuel pump is responsible for transferring fuel from the tank to the engine.

Causes of a rough idle. Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a variety of exhaust system issues.
Causes of a rough idle. Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a variety of exhaust system issues.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Car is new nissan versa warm up car idles down then shoots back up like something is kicking on then idles down then revs back up
ANSWER : Hello. Depending on the road you are driving on and if here is extra weight in the vehicle then this can occur. This is usually compensation for the lack of power that the engine puts out. With that being said it should be minimal. If it is very noticeable then you may actually have a programming issue or a faulty throttle body. Both are common on this vehicle. It sounds like the vehicle is still under warranty so I would take the vehicle to the dealer.

Ok car starts and runs fine normal idle but once it gets up to warming temp it’s like it starts to bog and dies.
ANSWER : With the randomness of the codes you are pulling, it is hard to determine what they have in common. When diagnosing mechanical errors like this, keep it simple. Due to the loss of power and stalling issue, I would like you to look at the one component that may have a huge effect over all of theses parts.

The ELD is a unit which measures the amount of power coming from the battery. It allows the alternator to adjust the field, and the amount of power generated by it. If you are experiencing issues with the ELD, which allows the battery and alternator to behave incorrectly, the other electrical components in the vehicle will not work. You may have more than one issue that is all coming to a head at once.

You can test the ELD with a multimeter, but any electrical testing can be dangerous, and we recommend you proceed with caution. If you’re not comfortable with this repair, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose the stalling issue firsthand and help you make the necessary repairs.

It feels like my car is about to break down, like I am very carefully carrying the engine home so it doesn’t fall out.
ANSWER : Hi there. I would typically start by checking to see if the check engine light is on and then I would scan the computer for codes. This can give some insight as to what is going on. If there are no codes then I’d monitor the signal from the sensors to make sure that they are all working fine. If those are also fine then the issue sounds like it may be a catalytic converter or a transmission problem. This vehicle has a history of transmission failures that could cause this. Also, if the catalytic converter fails it will cause the same symptoms. I usually test the converter for any signs of failure and do a back pressure test of the exhaust before getting into the transmission. If you’d like assistance in diagnosing this issue, a certified YourMechanic technician can inspect these issues with your engine hesitating and help diagnose your vehicle.

Your issues with the air conditioning unit are likely unrelated to the issues with your engine, and you will likely need your AC unit inspected in order to diagnose that issue.

Hey when the car idles it revs up and down by like 300 revs or so and also when the car is off it doesn’t recognize its in park.
ANSWER : The issue is the transmission position sensor is not working properly and registering that the transmission is in drive, neutral, or reverse. Check to see if the transmission is going into park when the shifter is in park. If the transmission is going into park, then the sensor is not working and needs replaced. If the transmission is not going into park, then the shifter cable may be broken or out of adjustment. If you need further assistance with transmission not going into park issue, then seek out a professional, such as one from Your Mechanic, to help you.

Just put on new throttle body now when start car idles fine but as warms up idle starts surging and bouncing up and down
ANSWER : First you need to check all the air hoses and vacuum lines. Any air that enters the engine without passing through the throttle body will make it behave badly. Then I suggest you disconnect the battery for a few minutes and review the re-learn procedure for the car. It’s pretty intricate, and not following it exactly can lead to a failure. Failing that, I suggest you get professional help. You don’t want to just start replacing parts as that can get expensive very quickly.Your Mechanic can send a qualified technician to your home to check out your car and help you figure out what needs to be done next.

My turbo diesel Triton, btwn 70kms and 80kms starts kicking. At idle sounds and feels like its going to stall.
ANSWER : Hey there, thank you for asking about your Mitsubishi. This is a common issue with many cars when a part called the mass airflow sensor begins to fail. This is a unit that monitors the air intake as it is mixed with fuel prior to being injected into the motor. This sends information to the computer which then makes adjustments to the air/fuel supply. When this is faulty, it will cause the same symptoms you describe. I would recommend having an expert from YourMechanic come to your home to diagnose your car’s issue and replace the mass airflow sensor if necessary.

my car heater gets warm but not hot.the car temp.is fine but i need more heat for the winter.does it sound like i need a new therm
ANSWER : It is possible that the thermostat is stuck open. When this happens, the engine can run much cooler than it is intended to. Running "too cool" can effect fuel mileage, emissions, and heater output. Most modern engines operate around or above the boiling point of water – 200-225 degrees. The thermostat generally opens when the coolant reaches 190-195 degrees. Part of it’s job is to restrict coolant flow so the engine can reach those temperatures. If the thermostat is open constantly, the engine may never reach operating temperatures. Have a certified technician inspect and/or replace the thermostat.

car surges when idle or in park. rpm bounce. car has cut off, but cuts back on.
ANSWER : It sounds like your idle air control valve could be failing. The idle air control valve is responsible for maintaining the proper amount of air into the intake while the vehicle is slowing down to a stop and resuming idle speed. When this valve fails, it can cause the exact symptoms that you described. I would recommend having the idle air control valve inspected by a qualified professional to determine if it is performing properly. If the IAC valve has failed, I would recommend having it replaced at your earliest opportunity.