High RPM / Low speed gain / Engine-Shifting issues?
Pontiac Grand Am SE - v6 Engine - Automatic Transmission
I am experiencing SERIOUS issues with my acceleration. When I try to accelerate from an idle position, my engine refuses to pick up speed. If I press down on the accelerator, the engine will rev and my RPM will kick up to 3,000-3,500. To pick up speed, I must press on the accelerator as LIGHTLY as possible. This is a very slow and tedious process (especially for the drivers behind my vehicle). If I press too hard, the engine will again just rev and kick up the RPM. 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. 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. 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!
Sounds like the transmission is slipping. I'd suggest going to a different transmission shop or your local GM dealer for a second opinion. HTH. -Jim
Your transmission is probably okay. 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. If you don't have a reader, get the car to Pep Boys or AutoZone. Believe it or not, a bad injector CAN put the car in limp mode if emissions go off the chart.
my 04 grand am did this as well no matter how much i pressed on the gas and rpms would shoot up it would tug along my problem was the catalytic converter...
I am have the same problem 2001 grand am what was the problem
I am having the same exact problem please help I have been trying to fix this for awile now. What would be the best first step be?
I have a 2001 Pontiac grand am GT v6
I have the same problem with my Pontiac Grand Gt v6 but also noticed that the temp gage is going up as well when the rpms kick up
Pretty sure its the file pump, I'm in the process of changing it now. The reason it dose that when pushing gas pedal down is that it isn't sending enough gas to motor. Check the gas pressure. I think it should be in the 60s I will keep you posted as I get it done.
Vacuum leak. Check all hoses for cracks or holes. It will make the brakes screw up as well.
Every time I power shift my em2 my RPM goes to about 6-7k and stays there for a while untill I shift again the rpms bearly start going down really slowly..Why does it do this? Is my clutch slipping?
When I'm in higher gears it is fine but going from 0-45 it doesn't change gears till the rpm reaches at least 3000? Any anwers?
I have a 2001 grand am se. An it is doing the same thing as urs but not going over 40 mph. I had it on a computer an it says multiple misfire. I changed the plugs an it's still running the same except it starts up better now. That's it. It's burning a lot of gas I just have no idea what it could b. It's not my catalytic converter becuz there's pressure coming out of the tail pipe. I put injector cleaner in a rand full of premium gas an still no change. So I am at a stand still on what it may be :-( can anyone help ?
Had the same problem with a couple cars and everyone kept saying it was a cat! But it the MAF (mass air flow sensor) is dirty and buying a new one is the best way to go because I have had no luck cleaning them and having them work properly. Your all welcome!
I am having the same problem with me 2002 Pontiac grand am gt. Anyone know what could be causing it?
If code doesn't read don't dispair pull ur censors first many time they can malfunction without sending code airflow ,evap and the like if that doesn't seem to be the problem check pressure changing fuel pump if original is probably suggested at this point any way finally if that isn't working take it to a real transmission specialist not a parts changer have fun love my 04 Grand Am GT
I have a cavalier when I'm driving the rpm goes up and it doesnt pull Like it's supposed to and it's a 5speed
My 2000 chevy camaro is doing the exact same thing. It has problems with shifting from 1-2 2-3 3-4. I and lucky if i can get it to 65 but doesnt go any faster i also got to maintain that speed for car not to start back at first 3 gears. Ive changed the plugs wires air filter tranny filter pcv valve oil change tranny flush. Its been giving.me problems.for.about a week already. Today check.engine light came.on. Im so upset
What was the answer to your problem Joshua? I am having the same issue...
Check your Cadillac converter its probably clogged. Thats what my problem was.
How did you check to see if it was clogged?
I had the same exact problem in issues in my 2002 Chevy Malibu as of recently. I finally cornered it to a clogged catalytic converter noticing that I had a split in the flex tubing from my exhaust pipe to my EGR valve it was a dead ringer but I have the same exact symptoms as you hope this helps.
2001 Mitsubishi eclipse 5 speed Same exact problem I need to shift to 4th gear and then back down to 2nd to get it even running like it should be. Anyone know what it can be.
Only time i have this is between 30-40mph where i get a sluggish acceleration. It goes up but it's really slow. I seem to have this problem when the RPMs are around 2,200-3,000. I never had a problem at 5,000RPMs or higher.
Hey can anyone tell me what wrong with my car it drivin itself when I put it in drive it takes off and goes 40 mph byl itself without me giving it any gas at all
My 04 is accelerating fine but when u r on cruise and hit a hill it loses speed and pedal goes to floor. If I let off and nail it it takes off like a rocket, no stumble or anything. Just noticed if I take off real slow from dead stop and slowly push the accelerator to the floor it goes no where also, let off punch it and away it goes. Must be my TPS not sending the correct signal when baying it
i have 2000 Chevy Silverado runs fine slips at 25 to 35 mph i have to rev it up to about 3200 rpm and let it drop to get it to shift, it wont shift past that and the rpms go up from there 50 mph stays at 3000 rpms 60 mph goes to 4000 rpms please help
I would like to no what is the cause of my rpm going up and does not want to go down
Hey everyone. The first thing i would check is your Cadillac converter there's a good chance the insides have fallen apart and clogged your air flow. This was the problem with my Pontiac Grand Am Gt it was not the fule pump. Sorry for not updating this sooner. Good luck everyone
I had the same problem with my 2003 grand am v6 3.4 liter. The rpms would just go really high and not move very fast. After a while it stops completely. Luckily, I made it into my driveway. You can start it up and push the gas pedal as much as you want but it wont move. The rpms will go up though.
Would it be the transmission or catylitic converter or something else entirely? Please help, it has been sitting in my driveway for months until I figure this out. All help is appreciated, thanks.
I had approximately the same problem and finally solved Slow acceleration ( when you press on the gas pedal the rpm rise but acceleration is very slow ) The problem was a small crack in the pipe which connected from air filter to machine and this makes air leak. change the pipe and now big difference in acceleration. So, before changing any part first check all air pipes. I got this solution after changed many pieces such as air filter and oil filter .... but It did not make any difference.
papasmurf74: did u get an answer? I am also having the same issue as yours.
adamwoodard0725. Have you been able to find an answer to your car issua? I am asking cus mine did the same thing. Have had the same issues although I was able to get it move slowly from my back yard to the shop a block away by putting it in N raising rpm to about 3-3.5 and manually shift it up to 2nd gear and leaving it there when I tried shifting to 3rd rpm jumped and me car shut off . The diagnostic scan came back with 6 codes. Most being sensers that the mechanic said eventually led to the cause of the other codes. They are supposed to start working on it Monday. If you have figured out a fix to your car issue that was different I would be very gracious to hear what it was. Iam not to sure on believing that after all my car issues and stress that the $120 in parts is all that it needs. If it does then I would be glad to share a list of parts changed and other labors they had to do to it, but in case it doesn't fix it is love an idea on what to do next.
Ignition control module
what would it be when a 2008 Chevy colbot runs but wont go over 40 mph and then the rpms jump up to about 4000 and I let off the gas and then the rpms go down
I have a Pontiac vibe 03 in the rpm move in the acceleration doesn’t what do you think it is thanks
If you all still wants to know what the problem is to your Pontiac you can reach me at firstname.lastname@example.org I am a professional mechanic all answers will be sent to all thanks
@guru I just emailed you about 2002 Pontiac Grand Prix! It’s resting when started at 3000 rpms and smells like gas! I need help
Looking for a Used Grand Am in your area?
CarGurus has 699 nationwide Grand Am listings starting at $2,500.
Search Pontiac Grand Am Questions
Pontiac Grand Am Experts
Related Models For Sale