I was wondering if anyone could help me figure out why my car has no acceleration?? My car has like no get up and go to it at all.... its pretty bad when minivans and such can blow me away!!! when i start to drive its like its starting out in 3rd gear or something!! i have an automatic but it takes off so slow it seems like its startin in a higher gear!! i slowly hit the gas at first and when i start going and get p to like 10-15mph if i push the pedal down further and further to get up speed its like it doesnt downshift and kick down and go it just slowly get up to speed!!! sorry for the bad description of what its doing but i dont know how to describe it any better!!! im just hoping one of you guys understand what im saying and can help me figure out why it lacks power so bad!!! any help at all would be great!!! i just replaced the plugs, plug wires, air filter, fuel filter, DPFE sensor, EGR valve was just replaced less then a year ago, cleaned the MAF sensor, and put some fuel injector cleaner stuff in the gas!!! so what could be the reason my car lacks so much power.... anyone have any thoughts on this???
I was wondering if anyone could help me figure out why my car has no acceleration?? My car has like no get up and go to it at all.... its pretty bad when minivans and such can blow me away!!! when i start to drive its like its starting out in 3rd gear or something!! i have an automatic but it takes off so slow it seems like its startin in a higher gear!! i slowly hit the gas at first and when i start going and get p to like 10-15mph if i push the pedal down further and further to get up speed its like it doesnt downshift and kick down and go it just slowly get up to speed!!! sorry for the bad description of what its doing but i dont know how to describe it any better!!! im just hoping one of you guys understand what im saying and can help me figure out why it lacks power so bad!!! any help at all would be great!!! i just replaced the plugs, plug wires, air filter, fuel filter, DPFE sensor, EGR valve was just replaced less then a year ago, cleaned the MAF sensor, and put some fuel injector cleaner stuff in the gas!!! so what could be the reason my car lacks so much power.... anyone have any thoughts on this???
1) if you start out slow, the computer adopts a lazy shift pattern. You may in fact be in second gear. You'll be out of gear unti lthe computer decides you REALLY want the power. which may take 2-3 seconds.
Disconnect the computer and do 5-6 0-60 runs, turning off the car between runs, and it will adopt a more aggressive shift pattern. Or get a tuner and set your shift points for good.
2) what size wheels do you have?
3) checked your air&fuel filters?
4) how many miles are on the car?
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
How do i disconnect the computer and do i have to leave it disconnected while doing the 5-6 0-60mph runs?
Right now since its winter i have the stock tires on it which are P225/55 R16 on the front, but one of the tires had to be replaced so on the rear i got P235/65 R16... but my aftermarket rims are 245/45 ZR17 but i dont have those ones on right now!!
I just replaced the air filter... i had a k&n filter in it but i was getting error codes so i replaced it with a normal filter and i also just replaced the fuel filter, spark plugs, spark plug wires (which are 9mm aftermarket performance wires), and a new DPFE sensor, and cleaned the MAF sensor also!!!
It has just over 80,000 miles i believe
Also if the tranny is going bad would that affect the power too?? Not sure if it is or not but could that affect it if it was??
How do i disconnect the computer and do i have to leave it disconnected while doing the 5-6 0-60mph runs?
Right now since its winter i have the stock tires on it which are P225/55 R16 on the front, but one of the tires had to be replaced so on the rear i got P235/65 R16... but my aftermarket rims are 245/45 ZR17 but i dont have those ones on right now!!
I just replaced the air filter... i had a k&n filter in it but i was getting error codes so i replaced it with a normal filter and i also just replaced the fuel filter, spark plugs, spark plug wires (which are 9mm aftermarket performance wires), and a new DPFE sensor, and cleaned the MAF sensor also!!!
It has just over 80,000 miles i believe
Also if the tranny is going bad would that affect the power too?? Not sure if it is or not but could that affect it if it was??
Just take the positive cable off the battery for 10 minutes.
awww, geez.
what kind of aftermarket wires did you get? the 3.8L has special connectors, and you may not be getting a good spark.
If you're getting error codes from the drop in filter, your MAF was likely dirty and is sending incorrect information to the computer, and your fuel maps are all off.
Disconnect the battery, and check for air leaks in the hoses.
Turn off the ignition between the runs.
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
i dont remember what they are called but ordered them from a website (dont remember which one) and there was many different wires for mustangs and the ones i ordered were the ones for 2001 3.8L V6 mustang which is what my car is!!! connectors and everything fit good on both ends and all!!
and the error codes i was getting were P0402 and engine misfire codes thats why i switched back to original air filter and many other things.... but it was the DPFE sensor that was causing the codes!! i no longer get any codes and no service engine soon light!!
and i did a vacuum check and everything already and all was good
but ill try disconnecting battery and see what that does
i dont remember what they are called but ordered them from a website (dont remember which one) and there was many different wires for mustangs and the ones i ordered were the ones for 2001 3.8L V6 mustang which is what my car is!!! connectors and everything fit good on both ends and all!!
and the error codes i was getting were P0402 and engine misfire codes thats why i switched back to original air filter and many other things.... but it was the DPFE sensor that was causing the codes!! i no longer get any codes and no service engine soon light!!
and i did a vacuum check and everything already and all was good
but ill try disconnecting battery and see what that does
DPFE sensor? That's a new one - could you spell it out?
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
Differential Pressure Feedback EGR sensor: 3.8L V6 & 4.6L models are equipped with the Differential Pressure Feedback EGR (DPFE) system. This operates in the same way as the PFE except it monitors the pressure drop across the orifice allowing for a more precise measurement of the exhaust gas pressures.
has your car stalled on you?
my last car "a honda" had a problem just like that..im not sue if its the same..but when i would eccelarate i would have no power till like 3.5 rpm.. and it was like that off and on..i took it to go get checked out and it turned out one of my seals were leaking on the timeing belt makeing it "skip"..i dont know if your problem is like that but hopefully this will help.
Differential Pressure Feedback EGR sensor: 3.8L V6 & 4.6L models are equipped with the Differential Pressure Feedback EGR (DPFE) system. This operates in the same way as the PFE except it monitors the pressure drop across the orifice allowing for a more precise measurement of the exhaust gas pressures.
Geez, man! Why didn't you just speak english, and say EGR sensor?!?!
I'm an old fart, those new fangled acronyms drive me crazy!
If your EGR is plugged, that would definitely affect performance.
I probably changed out every ignition component in my old Fiero, when it was running like a dog, and found out it was the EGR valve.
It took me two valves to get one that worked (got the cheapest I could find at Western Auto -had to go through 3 alternators there once!).
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
I think that when you changed back to the stock air filter, you only masked the problem. You may not be throwing codes anymore, but the problem still exists. Here are a few things to check:
1. Are your cats getting clogged?
2. Put the aftermarket filter back in, and see if the codes come up again.
3. Check to see if the EGR valve is actually working. Put a small tube on the end of the valve and start the car, suck on the tube-it should run worse. Hold the end of the tube, after sucking, and see if it goes back to normal. If it does, the diaphragm is no good.
4. Take the DPFE sensor off the tubes and start the car to see if air is flowing out of the tubes. It should be a stream of exhaust, but not enough to make the tubes sing. That would be the cats.
5. Check to see if you're getting proper spark. Start it, take one spark plug wire off at a time to see if it runs worse, or the same.
6. Take a spark plug out to see if it can tell you anything. What type of plug did you use?
7. When you changed the EGR valve, was there carbon buildup on the intake manifold?
thanks for the tips on things to check shinerstang but i have done everything u mentioned and all seemed to be ok from what i can tell!! the plugs i used are the autolite double platinums!!! my car does have more power now after everything i changed and not getting anymore codes but the problem im still having is when im on the highway my car like will not do over 70mph and it struggles to get to that!! i dont know if its my tranny or what but when i get up to 70mph it seems fine but when i give it more gas it doesnt go any faster.... if im going downhill it may get to 80mph but otherwise 70 is the fastest i can get it going!! could this be due to tranny issues or what else could it be?? any thoughts to why this is anyone??? help would be greatly appreciated thanks!!!
thanks for the tips on things to check shinerstang but i have done everything u mentioned and all seemed to be ok from what i can tell!! the plugs i used are the autolite double platinums!!! my car does have more power now after everything i changed and not getting anymore codes but the problem im still having is when im on the highway my car like will not do over 70mph and it struggles to get to that!! i dont know if its my tranny or what but when i get up to 70mph it seems fine but when i give it more gas it doesnt go any faster.... if im going downhill it may get to 80mph but otherwise 70 is the fastest i can get it going!! could this be due to tranny issues or what else could it be?? any thoughts to why this is anyone??? help would be greatly appreciated thanks!!!
I'd guess fuel pump/fuel filter -assuming you're not getting misfires.
Could still be your EGR, though . ..
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
My 2001 V6 Mustang lack power badly! 
