Rpms
Okay this first problem ive had with my car. Ive noticed my rpm are running higher than usual. As if my gears are having trouble shifting to next gear. Also if i put it in slap shift mode it runs perfectly. Im wondering could this be a transmission problem or fuel problem?
My car has 34000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there. From the description you have provided. The delayed shift sounds more like a programming issue. I would think with only 34,000 miles, this is something that, should be covered under manufacturer’s warranty. I would recommend contacting the dealership service center with the vehicle’s VIN (vehicle identification number). Ask if this a warranty issue, a recall, or TSB (technical service bulletin) for reprogramming. If, you receive no satisfaction, I recommend having your vehicle’s transmission delayed shift be inspected and diagnosed by a certified technician from YourMechanic.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Incorrect Idle Speed: While the average idle speed falls between 600 to 1,000 RPMs, if your vehicle is experiencing a rough idle it could be due to an incorrect idle speed setting.
Low, Manual or One-Pedal Driving
To shift into LOW or MANUAL, press the “L”or “M” button. The LOW or MANUAL button only works when your vehicle is already in DRIVE.
2015 Chevrolet Traverse transmission problems could include shifting delays, grinding or jumping during acceleration, the car shaking at any speed, or whistling noises or a burning smell coming from beneath the hood.
The Chevy Traverse is powered by a 3.6L V6 engine mated to a 6-speed automatic transmission.
High RPM – Idle speed is measured in revolutions per minute (RPM). For most 2 liter and below sized engines the vehicles, the standard idle speed should be around 750 RPM (when the engine is warm). If your car`s RPM is above 900 with a warm engine while idling, it is likely using too much fuel.
The idle speed should feel consistent without skipping or slipping. In most of today`s cars, an idle speed of 600 to 1000 RPMs is average. If your car is idling rough, though, it won`t feel smooth. The RPMs will jump up and down, for example, or they`ll fall below 600 RPM (or whatever is typical for your vehicle).
Yes. While traveling at high speed, shifting from L to D could harm your car`s transmission. When driving, it is best to change from L to D slowly. If you were to move from a hilly road to a leveled road, you could slow down a little and shift from L to D without hesitation.
The “L” on the gear shift stands for “Low.” What is the “L” gear used for? Low gear is used when you want the engine power high and the vehicle speed low. This limits stress on your brakes while allowing you to take advantage of your car`s full power in situations like towing and hilly driving.
Transmission, 6-speed automatic (Included and only available with CV14526 AWD models.)
3.6L V6 ENGINE AND 9-SPEED TRANSMISSION.
A potent V-6 engine gives the Traverse its legs, and a slick-shifting nine-speed automatic transmission changes gears unobtrusively.
Propulsion is provided by GM`s peppy GM`s 3.6-liter V-6, which is mated to a smooth-shifting nine-speed automatic transmission and paired with either front- or all-wheel drive.
Automatic transmissions are usually designed to operate between 500 and 8000 RPM depending on the engine. With diesels automatic transmissions are programmed to operate at lower RPM (500- 5000 RPM) than with gas( petrol) engines.
Typically, engines idle at about 600-800 rpm. Older engines may go up to 1200 rpm or more while warming up. But if the engine is revving up while idling, even after it`s sufficiently warmed up, you might have a problem. High idle speeds waste fuel, cause extra wear and tear on your engine, and can be unsafe as well.
Normal idle speed for your vehicle, once the engine is warm, should be around 750 RPM (roughly). Two thousand RPM is significantly out of range high, even for a cold engine. The occurrence of this high idle speed might be a coincidence and thus not related to the alternator repair.
For most modern vehicle, you should not cruise above 2500 to 3000 rpm. Most of the turbo-charged engines develop a lot of more torque around 1800 to 2600 rpm range. Older engines, torque didn`t peak until 3500+ rpm.
The gears determine the amount of power available from the engine. First gear provides the most pulling power but the least potential for speed, whilst fifth gear which provides the least pulling power allows the greatest range of speed.
Things You Should Know
Move the shifter from P (park) to D (drive) if you want to go forward, or R (reverse) if you want to go backward. Leave the car in D (drive) while moving forward.
Avoid changing gears while the car is moving
The car will actually stop but you will end up wearing out your automatic transmission band. The transmission band is hard to access making its repair and replacement expensive and time-consuming.
Can you shift from drive to L with an automatic transmission while moving? Yes, but doing so at high speed will be jarring to you and your transmission. At high enough speeds, if the car doesn`t stop you from doing it, shifting into L could cause you to blow the engine and damage the transmission as well.
Drivers of manual cars need to change gears all the time, whereas drivers of automatic cars can choose to change gear when it`s necessary. The process is fairly straightforward for everyday driving: when rev rise to 2500-3000rpm, change up a gear, and if they will drop below 1000-1500rpm change down a gear.
Most automatics also allow you to manually select one or more lower gears, such as Low (L), 1st (1) and 2nd (2).
L – Low Gear: This position is typically used for towing or driving on steep inclines. S – Sport: Puts the car into a lower gear so you can have more power and control when accelerating. M – Manual: This position allows you to shift gears manually, giving you more control over your car`s speed.
Your 2015 Chevrolet Traverse transmission filter will need to be replaced every 30,000 or 50,000 miles.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Isit normal for my car to shift between 2000 RPMs and 3000 rpms
ANSWER : Hello, thanks for writing in about your Chrysler Voyager. The shift RPMs will be higher if you are further down on the throttle on faster acceleration. Shifting between 2000 and 3000 is normal.
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Leaving stop light car runs high rpms 5000-6000 and doesn’t want to go over 20 mph 2009 Chevy Traverse
ANSWER : Hi there – first thing to check is the transmission fluid level – low fluid levels can cause lots of problems like this – your transmission is obviously slipping badly. If the fluid is at a correct level, and doesn’t smell burned, you may well have burned out clutches in the transmission, or solenoid or valve problems in the valve body of the transmission. The problem codes reviewed by your mechanic should have helped guide the diagnosis. I would recommend a 2nd opinion transmission inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
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Why do the RPMs stay higher when I shift into Neutral?
ANSWER : Hello. The symptoms you describe can commonly be caused by a vacuum leak or faulty idle air control valve. A vacuum leak may allow unmetered air into the engine, which may causing the idle to stay high when the transmission is put into neutral. It may also be possible that the idle air control valve has malfunctioned and is causing the issues. The idle air control valve is the component that is responsible for maintaining and adjusting engine idle speeds. If it malfunctions it may cause an erratic or irregular idle, as you are experiencing. I would start by closely inspecting the vehicle for any vacuum leaks, perhaps in the form of a leaky gasket or worn out hose, and then move on to testing the idle air control valve.
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What can cause the RPMs to go super high while driving at one constant speed?
ANSWER : Hi There,
It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the gas pedal. Based upon the inputs from the sensor reading your foot’s position on the pedal, the ECU then makes the direction to supply more or less fuel to the motor. When this sensor is not working properly, this can cause intermittent responses when pressing the gas pedal. I would suggest having a professional from Your Mechanic come to you home to diagnose and inspect your vehicle.
It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the gas pedal. Based upon the inputs from the sensor reading your foot’s position on the pedal, the ECU then makes the direction to supply more or less fuel to the motor. When this sensor is not working properly, this can cause intermittent responses when pressing the gas pedal. I would suggest having a professional from Your Mechanic come to you home to diagnose and inspect your vehicle.
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When the clutch is engaged or in neutral it stays revved up at 2000 RPMs and won’t go back to idle RPMs
ANSWER : The causes of high idle speed can be determined via a diagnostic. Engine idle speed is controlled via an idle air control valve (IACV). If the valve is malfunctioning, or even if the fuse to this electronically controlled valve is faulty, the IAC motor could malfunction, leading to a higher than normal engine idle speed. Vacuum leaks can also cause a high engine idle. The engine’s oxygen sensor will detect the extra oxygen entering the engine through the vacuum leak which will alert the engine’s computer that the exhaust is running lean, which will prompt the computer to pump in additional fuel, resulting in an abnormally high idle. A malfunctioning throttle system can cause both a high idle as well as an engine stall. A dirty air intake or cracked air intake tube is often the culprit. Although "rare," if the car’s PCM (main engine control computer) malfunctions, that can cause a high engine idle, but all other potential causes, of which there are quite a few would have to be ruled out first. YourMechanic can diagnose your abnormally high engine idle during a mobile visit to your home or workplace.
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It will rev at high RPMs but in drive it won’t move until 2k RPMs. It will only stay in that area of RPMs
ANSWER : Hi. The first task is to extract the problem codes which the Check Engine light indicates are present. These codes are most helpful in diagnosing problems with your vehicle.
Two different transmissions were offered in the Civic – the HX models received a constantly variable transmission, where the engine revs to a speed near 2K as you note, and the transmission dynamically changes gear ratios. Based on the symptoms, I believe you have this type of transmission. The CVT transmission has a forward clutch, and it sounds like that clutch is failing.
If you want to have this all taken care of, a certified professional from YourMechanic can determine the cause of the high RPMs so that this can be repaired.
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Rough Idle when first started or when wet
ANSWER : Hello,
I sounds like you may have a dirty or faulty idle air control valve. As you know, this monitors and reads the air intake as it enters the engine prior to being mixed with fuel while making adjustments to create the proper air/fuel ratio to be injected into the motor. Occasionally, these valves may become faulty when they are dirty, clogged or have the incorrect voltage going to them, which may cause the motor to hunt for the perfect idle as it receives these incorrect readings causing your RPM’s to fluctuate as you describe. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.
I sounds like you may have a dirty or faulty idle air control valve. As you know, this monitors and reads the air intake as it enters the engine prior to being mixed with fuel while making adjustments to create the proper air/fuel ratio to be injected into the motor. Occasionally, these valves may become faulty when they are dirty, clogged or have the incorrect voltage going to them, which may cause the motor to hunt for the perfect idle as it receives these incorrect readings causing your RPM’s to fluctuate as you describe. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.
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My RPMs keep going up and down irregularly
ANSWER : Engine surging can be caused by several issues. Typically in diagnosing these types of issues, you want to start by having your engine scanned for diagnostic troubleshooting codes. If scanning the computer doesn’t pull any codes, the best way to find the issue is with a process of elimination. You will want to find and inspect the following components. One, the mass air flow sensor, can fail or have a bad connection. If this sensor is dirty, faulty, or has a bad connection, it will send the wrong information to the computer, which will possibly attempt to overcompensate with extra fuel causing the surge.
It is always smart to then check your fuel pressure as well. A clogged fuel system can also causes surges. As you press more on the gas pedal, the computer is trying to pump and not receiving the fuel it needs. It then causes the pump to work harder until it gets what the amount of fuel it thinks it should be getting. Once the computer has realized what is going on, it depletes the amount being pumped to the engine and regulates where it needs to be. These issues are typically caused by a worn fuel pump, clogged fuel injectors, or a clogged fuel filter. If none of these is the culprit, turn your attention to the spark plugs and ignition systems. You will want to test for correct voltage and timing at each cylinder. A faulty distributor or set of wires is typically the cause of these symptoms.
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