it screams when I push the gas petal to accelerate the rpm rev high causing it to act like its losing power going up hill

How do I fix my van over a dozen mechanics have looked at it diagnosed many problems but its still not fixed, please help

My car has 195727 miles.

Experienced mechanics share their insights in answering this question :
This sounds like the transmission is slipping. I recommend having a transmission mechanic diagnose the slipping by checking transmission pressures, checking for trouble codes, or checking for any solenoids that are not letting it shift.

How to Identify and Fix Common car Problems ?

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

Worn Transmission Fluid (Automatic Transmission)

Over time, the transmission fluid gathers dirt and grime. This can cause the engine to run roughly, stall or fail to accelerate when you press down on the gas pedal. You may need to have a transmission fluid change before more damage is done.

When the transmission develops a leak and fluid levels fall, a vehicle will begin to rev at higher levels as a result of the gearbox band or torque converter slipping. The vehicle may also experience irregular or delayed gear shifting. A manual vehicle experiencing this difficulty may be related to a slipping clutch.
Why does my car not accelerate when I push the gas? A car not accelerating properly can be caused by a number of things. It could be due to the throttle body, gas tank, spark plugs, or the ECU. It could also be because you have a dirty air filter or a clogged fuel filter.
A loud noise coming from your vehicle when you accelerate, particularly one that sounds similar to a lawn mower is most likely due to an exhaust system leak.
Automatic transmission problems can be caused by a lack of transmission fluid. If you are experiencing slipping, the first thing you should do is check your transmission fluid levels. If they are low, you should top it up and check for leaks. Slipping can also be caused by burned or worn out fluid.
Your engine may have more RPMS due to any of the following: Transmission fluid is leaking. Transmission slips when changing gears because of a bad clutch. Speed sensor isn`t working, and the car can`t switch gears.
Clean or replace your vehicle`s air filter when your acceleration is acting sluggish. Put in new spark plugs when they go bad if your engine misfires and hesitates. Replace your vehicle`s fuel filter when there`s a delayed response when you accelerate.
An engine that is suddenly running louder than normal is usually crying for help. In the majority of cases an underlying problem is causing the engine to rumble. Problems can range from something simple like dirty spark plugs to the more serious failing muffler or catalytic converter.
Another feature with automatic vehicles is the speed sensor. This works to trigger the car to shift when a certain speed is reached. If this sensor is not working correctly, your car might not shift gears properly, which can make be the reason why your car revs up and down while driving.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

it screams when I push the gas petal to accelerate the rpm rev high causing it to act like its losing power going up hill
ANSWER : This sounds like the transmission is slipping. I recommend having a transmission mechanic diagnose the slipping by checking transmission pressures, checking for trouble codes, or checking for any solenoids that are not letting it shift.

The engine of the car runs, but when I push the gas pedal it does not accelerate, and the engine does not rev.
ANSWER : Hello. It sounds like you may have an issue with your throttle position sensor. This sensor sends a reference voltage to your power-train control module, which uses that to determine ignition timing and fuel trims. If the power-train control module is not detecting the proper signal from the throttle position sensor, the engine may not accelerate properly. It’s probably a good idea for you to have a professional mobile mechanic come to your location and complete a car is slow to accelerate inspection first, so they can pinpoint what is causing this issue to occur and they will recommend the right repairs be completed.

Car won’t rev or go when pushing gas pedal. Only revs up in neutral or park unless you work with it to keep it revving
ANSWER : Hello. The first task in solving this problem is to extract problem codes that are set, whether the Check Engine light is on or not. There are several problems which could cause this behavior, such as a bad throttle position sensor, fuel supply issues (low fuel pressure), or a dirty or bad mass air flow sensor. Problem codes will narrow the cause more quickly, and help avoid replacing parts that are not the problem. If you need to have a certified technician from YourMechanic can come to your car’s location to diagnose the gas pedal problem and follow through with repairs.

Engine runs, but car doesn’t accelerate?
ANSWER : Knowing the results of the computer diagnosis as well as the part that was replaced can be helpful in assisting you with your Pontiac G3. It is possible the part that was replaced is defective and may need to be replaced. Based on what you described with your vehicle, it appears that you may be experiencing transmission issues.

The engine should never be revved up to six to seven thousand RPMs when the vehicle is not moving, as this can cause damage to the vehicle’s components. Because the information provided is a little unclear, it is hard to determine if you are having concerns with your transmission or if the problem lies with the engine itself.

If you don’t trust going back to the same mechanic that worked on your car originally, get yourself a second opinion and enlist the help of one of our certified mechanics who can diagnose why the Check Engine Light is on as well as determine why your Pontiac is not accelerating. They will also be able to assist you with the repairs needed to get your G3 up and running again.

My 2005 Acura TL is not accelerating but rpm is going up and down erratically. What is causing this?
ANSWER : Hey there. If the vehicle has a manual transmission, your issue can be caused by a worn clutch. When the clutch is worn, it no longer has the clamping strength to transmit power from the engine to the transmission. This can cause the engine to rev but the vehicle speed does not equal the engine speed.

If the vehicle is equipped with an automatic transmission, the problem can be caused by a couple of issues. One could be the torque converter. The torque converter transmits power from the engine to an automatic transmission in a similar manner that a clutch does with a manual transmission.

Also, automatic transmissions do have internal clutches but they are considered "wet clutches" as they are immersed in automatic transmission fluid. If the internal clutches are worn, your vehicle can act similarly to a worn manual transmission clutch – the engine revs but the vehicle speed does not match. Have a certified technician diagnose your transmission slipping concern as soon as possible.

Having problems accelerating at high speeds causing jerking feeling…this happens when slightly pushing gas pedal
ANSWER : This problem of a slight jerk feel is what is known as a lean tip in surge. The cause can be an indication that the engine is running lean and may be caused by dirty injectors, throttle body, air filter, mass air sensor, ignition system service or O2 sensors. A test will need to be done to check all these areas and see if normal maintenance is needed or more thorough testing is needed to isolate the cause. If you need help with this, consider YourMechanic, as a certified technician can come to your home or office to inspect the acceleration issue and determine what repairs are necessary.

What would cause my 02 trailblazer to sometimes not accelerate when pushing on the gas pedal while driving?
ANSWER : If your RPMs are going up when you press the accelerator pedal but the vehicle does not move, this would be the transmission slipping. Transmissions can slip due to low fluid levels, poor fluid condition, or internal damage to the transmission. I would recommend starting by checking the transmission fluid level and condition. If the fluid is low, top it off with the recommended fluid and see if the problem goes away. If the fluid is dark in color, I would recommend a transmission fluid flush which will replace the dirty fluid with new. If these two services do not resolve the issue, it is likely that you have internal transmission damage and would need to have the vehicle inspected by a qualifed transmission technician. Consider YourMechanic for your transmission fluid service as it can be done from your home or office.

My car doesn’t want to go up hills. It has slow acceleration, and feels like it’s not kicking into the next gear when I drive it.
ANSWER : Hi There,
What you are describing sounds like you may have a clogged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When the catalytic converter is clogged, this causes these gases to be backed up into the exhaust system not allowing the engine to breathe properly. When this happens, the engine is forced to work much harder to expel these gases. This often results in the engine bogging down, hesitating, shaking and causing very poor fuel economy. This should also cause a check engine light to come on as the O2 sensors should be reading the incorrect amounts of oxygen in the exhaust gases if this is your problem. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your catalytic converter.