Why does my car lose power when accelerating?
This power loss you refer to is because the engine itself can not increase revolutions per minute beyond a certain point where the engine becomes inefficient. This curve happens at the top range of the designed RPM of each gear of the transmission.My Prius on the other hand has an infinitely variable transmission and does not suffer from this problem at all. The electric motor has maximum torque at zero RPM and does gradually reduce as the vehicle speeds up, but you will not even notice this. Why? The computer adjusts the gas engine RPM based on how much power is needed, and then adjusts the transmission to apply that available torque to the wheels. The engine thus runs as a constant RPM for the maximum torque that the engine can run at. Maximum torque the entire time the car is accelerating. I am sometimes amused when I have to actually take my foot off the gass pedal when the souped up mustang in front of me tops out in each gear, while my prius gets about three times the gas milage they do. Technology is wonderful when applied correctly.
Car engines lose power and acceleration when the AC is turned on. Is there any way or hack at all to get around this?
Actually its been proven that the power required to overcome the additional aero drag from open windows on your car at speeds over 50 mph exceeds the power consumed by the AC but gained back by the aerodynamic streamlining of having the windows closed.Furthermore, air conditioners only use about 10–15 HP.If you are cruising on the highway, you engine power used will be greatly reduced by straight, level steady speeds and be in the 20–30 HP range.Modern cars typically have peak horsepower of 150 to 300 and more horsepower for acceleration and passing and climbing, but you should have plenty of HP to spare to run the airconditioner in normal driving without slowing the car.
Semi-truck loses power all of a sudden?
If there is a lot of black smoke when this happens, check your air intake system. You may have a partially clogged air cleaner or a collapsing intake hose. I've even seen a case where a rag was left in the intake after someone cleaned it. A clogged turbo or failing turbo could cause the loss of power. Do you have an exhaust brake? Or a jake brake? If it is operating when it shouldn't it will rob power. If there isn't a lot of smoke, or there is a lot of white smoke, it is probably a fuel problem. The simplest problem could be a leaking line or fuel filter seal that is allowing air into the lines. This can also make the truck hard to start. You could have a fuel pump starting to fail. A leaking injector line under the valve covers would put diesel directly into your oil, which would show up as a higher level on the dipstick. It could be something in the engine management system, a sensor failing or the ECU acting up, only connecting it to a computer can tell you for sure. I wish I could help more, but with out looking at the engine or even knowing the make it's hard to diagnose.
My cars rpm drops when flooring it?
Honestly, you're asking for a laundry list of what could be wrongs but it's probably only one of these. If all was well you car would operate like a horse wanting to bolt when you gave him loose rein, right? If the timing was just right and the plugs were all fine and the fuel injectors Oops or sorry carboration was all good. There's fuel air mixture and several other things. Did this start all of a sudden? First thing I would suspect assuming the fire is there is weather the fuel is getting to the fire. Sounds like opening up the intake makes it lie down. That sounds like a fuel supply problem to me. Look there first. That's got to suck for a Z28. You should keep her home after dark to avoid embarrassment.
Why does my car momentarily lose power after shifting gears?
You've asked several questions here...and also given some information that may have an impact on the answers you might get. You mention that the clutch is about to "go". If this is the case, it is typically manifested by "clutch slip" which is when you press the accelerator and the engine speeds up, but the car doesn't go any faster..i.e. the clutch is "slipping" against the flywheel/pressure plate without transferring the increased rpm of the engine to the transmission. If the clutch is indeed slipping, then this phenomenon is most noticeable right after you change gears, because your putting more demands on the engine (i.e. accelerating) and attempting to put more torque from the engine into the transmission (via the clutch) which causes it to slip more than it might in steady-state driving at a constant speed. If you are experiencing a slipping clutch you most likely need to replace it and afterward the car should accelerate smoothly and there will be a synchronicity between engine speed and car speed.Now, if your clutch is NOT slipping and your experiencing a perceived loss of power after shifting gears, it may just be that the engine rpm are dropping off too far before you reengage the clutch and resume acceleration. If this is the case, you may be taking too much time between disengaging the clutch (by pressing the clutch pedal) and re-engaging it (by lifting off the clutch pedal) When shifting gears, the clutch pedal should be pressed and released fairly quickly as part of a smooth, movement synchronized with moving the shift lever from one gear to the next. If you are pausing in the middle of the shift, or taking too long to reengage the clutch, the engine rpm will fall and the engine will be making less power than it was at the higher rpm level it was when you initiated your gear change. The idea is to keep the engine in a range of rpm that produces enough power to smoothly take up the level of acceleration you're trying to achieve while changing up through the gears.
Loss of power after spark plug change?
you better check the wires. you might have pull 1 too hard and broke the core inside of 1. that,s a nice car and i can,t see how changing just the plugs can do all that unless you did get the firing order wrong on those 2 plugs. change the 2 plug wires around and see if it makes any difference.
What would cause my car to accelerate slowly when I press down on the gas?
Assuming that’s the only abnormal symptom and that the symptom appeared suddenly instead of gradually dropping acceleration over a long time, and assuming that there are no other obvious problems like oil leaks or unusual smoke from the exhaust, it’s most likely your engine not operating properly.Keep in mind the 3 things your engine needs in each of the cylinders to work:airfuelsparkSo, I would troubleshoot in this order (easiest/cheapest fix first).check air intake and make sure there are no obstructions.While you’re there check that your air filter is clean.Check your engine, transmission and differential oil levels. Top them up if necessary. Change them if they’re dirty or due for a change.Check all fuses.Check that fuel filter is clean.Check that spark plugs are working. (there are tutorials on the web on how to do this). if there’s a fault, it could be the plugs, cables, dirty distributor, faulty ignition coil.Check fuel pumps are working and the in-tank fuel filters are clean.Check fuel injectors are working.Check throttle body is clean, unobstructed and the butterfly flap is moving smoothly and freely.**NOTE** In the past, whenever I’ve encountered this problem it’s always been a faulty spark plug. one cylinder was not firing and hence the loss of power.If it’s not any of the above, and you have an EFI engine, it could be the maf sensor or the engine management computer or software. These can be much more expensive to fix and need specialist tools.
Can a leaking manifold exhaust cause a loss of HP/power?
I have a 1995 Pontiac Trans Am. If my exhaust manifold is leaking, can I experience HP/power loss? If so any idea how much? And if there is a power loss can the loss get worse over time? When I floor the car, it still flies and doesn't appear to be missing anything. But when I am accelerating at more of a normal pace, it seems like the car is weaker than it should be. Could this be from the leak, or am I just pysching myself out??? I do plan on replacing the manifold gaskets, or replacing the manifold with headers but it could be a while so I am wondering the effect it'll have on the car in the meantime.