Why does my Pontiac Grand Am top out at high RPM?

Sounds like the ECU has put you into “limp” mode. Did you get a check engine light at any time in the recent past? In “limp” mode the car will refuse to accelerate, will top out at about 50 mph and will not go past 3rd gear, leaving you at a high RPM. This is to protect the engine against mechanical damage. Check the OBD for trouble codes.

What’s the constant speed of a Pontiac Grand Am?

To obtain a constant speed of around 55 MPH, the vehicle is running a constant 2,500 RPM. Not sure what the issue is. I am definitely not a “car guy.” I took it to a transmission shop where they hooked the vehicle up to a computer.

Why does my car not respond when I press the gas pedal?

You may not be noticing a delayed response from the pedal, but if you see low gas mileage, it could mean that the car’s throttle position sensor is working but not as accurate as it should be. Modern cars have a monitoring system over all the sensors in the car engine.

What happens when you put a Pontiac in limp mode?

In “limp” mode the car will refuse to accelerate, will top out at about 50 mph and will not go past 3rd gear, leaving you at a high RPM. This is to protect the engine against mechanical damage. Check the OBD for trouble codes.

When did the last Pontiac Grand Am Come Out?

The Pontiac Grand Am is a mid-size size (and later compact) car produced by Pontiac. The 1999-2005 generation is the final generation of the Pontiac Grand Am. Why is it when driving the RPM gauge drops or jumps up?

What happens when you press down on the gas pedal?

Engine response is inconsistent When you press down on the gas pedal, your engine should respond directly and instantly. However, when a problem with the APP sensor exists, the vehicle’s ability to consistently accelerate or decelerate as directed by the driver is reduced.

Why does my car not accelerate when I press on the gas?

Had to jump start it this morning, but then the accelerator wouldn’t respond when the car was in drive or reverse. Checked all the fuses and found one burned out. Replaced it with one of the provided spares and that solved the problem. It was for the traction control system. 83 people found this helpful. 700 My car does the same thing..

What are the symptoms of a bad accelerator pedal?

Symptoms of a Bad or Failing Throttle/Accelerator Pedal Position Sensor. Common signs of a faulty pedal position sensor include inconsistent engine response, reduced fuel efficiency, and the Check Engine Light coming on. The days of having to constantly adjust the throttle cable due to a loose nut on the carburetor are long gone.

What to do when your car rpm goes down?

Hey friends if your car RPM goes down to zero then do following steps. 2.Make it Throttle body clean 6.Check if there is any gas leakage near by your car engine. Do All the above your car will be smooth and there will be no problem related to RPM. Was this answer helpful?

What causes a car engine to overheat while driving?

Symptom: Engine overheats. Engine runs fine but gets very hot while driving. This problem usually occurs after moderate to extended periods of driving. You may or may not notice steam coming from the hood or smell coolant. Any of the above causes for overheating on short trips. The car is overloaded or being driven too hard.

Why does my Grand Am engine rev high?

I have a 2003 Pontiac Grand Am 3.4 liter. Sometimes the engine starts revving high uncontrollably. It doesn’t happen all the time, but when it does happen, it does it sometimes when I start the car, or when i’m driving down the road, or when i’m sitting at a stop light.

What’s the constant RPM of a Pontiac Grand Am?

If I try to press any harder on the accelerator at this point, the RPM once again kicks up 3,000-3,500. In addition, when I do this, the vehicle will lose speed and drop to around 50 MPH. To obtain a constant speed of around 55 MPH, the vehicle is running a constant 2,500 RPM. Not sure what the issue is. I am definitely not a “car guy.”

What should idle and revving be on a Pontiac Grand Am?

Measure the distance that the valve is extended before installing a new valve. The distance from the idle air control valve motor housing to the end of the idle air control valve pintle should be less than 28 mm (1-1/8 in). Manually compress the pintle until the extension is less than 28 mm (1-1/8 in).

Is the transmission okay on a Pontiac Grand Am?

I am definitely not a “car guy.” I took it to a transmission shop where they hooked the vehicle up to a computer. They informed me that the transmission was fine. They stated that the problem may lie with the fuel injector…yah-ta,yah-ta,yah-ta… Any suggestions would be appreciated! Thank you! Your transmission is probably okay.

What’s the top speed of a Pontiac Grand Am?

The vehicle tops out at around 55-60 MPH. If I try to press any harder on the accelerator at this point, the RPM once again kicks up 3,000-3,500. In addition, when I do this, the vehicle will lose speed and drop to around 50 MPH.

What to do when automatic transmission won’t shift into 3rd gear?

Check the Throttle Cables. Changing the fluid solves plenty of transmission issues but if the problem of automatic transmission won’t shift into 3rd gear persists, the parts you should check are the throttle cables. A defective cable with excessive slack is likely to create issues with smooth shifting of the gears.

How to bypass the PassLock sensor on a 2002 Pontiac Grand Am?

This web page will guide you through the steps necessary to bypass the “Passlock Sensor” on a 2002 Pontiac Grand Am, and keep the “SECURITY” light off forever. The steps necessary are similar on the other models listed above. There are generally only minor differences in how to get the radio out to get to the wires.

When did the Pontiac Grand Am stop being made?

The Pontiac Grand Am is a mid-size car and later a compact car that was produced by Pontiac. The Grand Am had two separate three-year runs in the 1970s: from 1973 to 1975, and again from 1978 to 1980. It was based on the GM A platform. Production of the Grand Am was canceled in 1980 when it was replaced by the Pontiac 6000.

What was the compression ratio of the Pontiac Grand Am?

Engines were also detuned to meet the 1975 emission regulations with the compression ratio dropping to a new low of 7.6 to 1 on some engines.

What kind of transmission does a Pontiac Grand Am have?

All engines were available with a Turbo-hydramatic 400 automatic transmission as standard equipment. A 4-speed manual transmission was available with the 400/4-bbl engine in 1973 and 1974, but this was not popular.

What are the RPMs of a Pontiac Grand Prix?

The RPMs fluttered a bit, between 2000 RPM and 3200 RPM with the gas pushed down all the way. I parked the car and there were some strange smells. I am not sure how to describe them, at one point almost the burning rubber. I own a 2001 Pontiac Grand Prix. Last week it started accelerating very slowly when pushing on the gas.

What causes car RPMs to go up but not down?

There might be a leaking vacuum hose in the car, hoses deliver air and fuel to the combustion chamber. If it is leaking, the air will mix with the gas causing the RPMs to go higher than it should be. Another thing to look out for is a clogged air filter if the air is having difficulties entering the combustion chamber.

When does the RPM go back to normal?

The RPM will usually go back to normal as you accelerate the vehicle, but will increase again after you stop. This is definitely not a normal situation. If you are experiencing a rough idle or your RPM is running high, then there are a variety of reasons for why this could be happening.

What happens when you go over 4000 rpm?

The engine computer has a built in rev limiter built in to the programming that will not let the engine go above 3800 to 4000 rpms when the transmission is not in gear and driving down the street. This is a normal protection so you do not over rev the engine and damage it. Was this answer helpful? Thank you for your feedback! Sorry about that.

Can a 2002 Impala 3.8L Rev past 4000 rpm?

2002 Impala 3.8L with 130K. Recently, car has reduced power. I tried running it in Park to above 4000 RPM. The car will rev to that, but then engine starts missing, sputtering, and shaking, making angry chuffing and puffing noises and just hangs out at 4000 RPM.

Why does my car cut out at 3500 rpm?

Tromp on it and she’s a tire shredding beast, untill it starts getting to 3500+ rpm, not so bad in 1st gear but 2nd is worse and 3rd is real bad. Damn thing starts cutting out/sputtering have to let off. Have checked the timing, spot on 38* all the way.

What causes a Pontiac Grand Prix to misfire?

Something is causing cylinders to misfire at random, which is a lot less cut and dry than a cylinder specific misfire code. The P0300 Pontiac trouble code will trigger the Grand Prix’s service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is.

How to tell if a Pontiac Grand Prix has a trouble code?

1 The P0300 Pontiac trouble code will trigger the Grand Prix’s service engine soon light. 2 The vehicle itself may begin to run rough. It depends on how serious the misfire is. 3 The vehicle may produce excess vibration, espescially at lower RPM

Why does my Pontiac Grand Prix make a whining noise?

If it changes with the engine, it’s most likely going to be an accessory bolted to the engine (or the radio, shut it off and see if it stops). If it stay constant as you rev the engine it’s going to be something else. A whining sound when accelerating is almost always caused by a bad accessory attached to your Grand Prix’s engine.

Where to get help for a Pontiac problem?

10 people found this helpful. For all you PONTIAC folks,Google pontiac problems,you will be sent to a Grand Am site,heck im even on their.lots of great info on pontiacs.a lot of guys their really know their stuff about theses cars. 31 people found this helpful.

What’s the idle speed of a Pontiac Grand Am?

The car idles at between 1500 and 2500 RPMs and if you put it in drive and let off the brake, it’ll get up to about 40-45 mph on its own. I followed behind her on the way home and she was riding the brake practically the whole time. At first it happened every so often, put lately its been happening more and more frequently.

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