Maybe a bad O2 sensor or clogged catalytic converter.
check compression in cyclinders or catalytic converter may be stopped up.
Normally when a catalytic converter goes bad, it fills up with junk. It simply slows down the vehicle. You have the gas pedal to the floor and you are going a lot slower than you should be going. It does not make the vehicle buck. How long has it been since you cleaned out the fuel system? How is your electrical system? How are your plugs? Have they been checked in 8 years?
On modern vehicles the catalytic converter is made to last the life of the vehicle. It would need to be replaced if the car is burning a lot of oil or if it has been damaged.
If you drive your car without a catalytic converter, you can be pulled over and given a ticket. You cannot drive your car with a lot of noise, it's considered a violation of the noise ordinance.
Plugged fuel or air filter? Plugged catalytic converter?
Lack of fuel? Does your car have a catalytic converter? A lot of times an older catalytic converter will become clogged and as it heats up it will restrict the exhaust. As it cools back down it will open back up until it heats back up. If you have a catalytic converter on your exhaust, I would definitely look there first.
Bad plugs and wires, Partially clogged catalytic converter, Bent tail pipe, Clogged air filter, Incorrect weight oil, low tire pressure, driving technique, brakes dragging, just to name a few causes.
Rough idle... Higher then normal tempatures under operation. Bucking or loss of RPM pulling a hill, Loss of MPG .. Smell of Rotten eggs all signs of bad Cat.
Combustion engines produce, in their exhaust, a number of nasty chemicals. The purpose of a catalytic converter fitted to the engine's exhaust system is to convert these nasty chemicals into harmless ones to provent environmental pollution. ------------------------------------------------------------------------------------------------------------------------------------------- Reduces the toxicity of internal combustion engine exhaust. It uses a catalyst and a chemical reaction to convert toxic combustion by products into a less toxic substance. A catalytic converter takes the exhaust gas stream from the engine and breaks the noxious components of the exhaust down to less noxious or harmless components. To reduce auto emissions. The catalyst in a catalytic converter causes unburned hydrocarbons to oxidize. To do so, oxygen must be present in the exhaust mixture. If an engine is running well, there isn't really much for the catalytic converter to do. If the engine is in need of a tune-up, the catalytic converter may get quite a workout and in the process it can get very hot. Also, deposits can build up on a catalytic converter, making it useless. If the engine is running poorly, and a lot of unburned fuel is going out the exhaust, deposits from the fuel can build up on the catalyst. If the engine is burning oil, oil deposits can also build up. It converts carbon monoxide, which is very deadly to all animals into carbon dioxide, which is not near as bad for the environment and it also helps prevent greenhouse gases because of this.
Combustion engines produce, in their exhaust, a number of nasty chemicals. The purpose of a catalytic converter fitted to the engine's exhaust system is to convert these nasty chemicals into harmless ones to provent environmental pollution. ------------------------------------------------------------------------------------------------------------------------------------------- Reduces the toxicity of internal combustion engine exhaust. It uses a catalyst and a chemical reaction to convert toxic combustion by products into a less toxic substance. A catalytic converter takes the exhaust gas stream from the engine and breaks the noxious components of the exhaust down to less noxious or harmless components. To reduce auto emissions. The catalyst in a catalytic converter causes unburned hydrocarbons to oxidize. To do so, oxygen must be present in the exhaust mixture. If an engine is running well, there isn't really much for the catalytic converter to do. If the engine is in need of a tune-up, the catalytic converter may get quite a workout and in the process it can get very hot. Also, deposits can build up on a catalytic converter, making it useless. If the engine is running poorly, and a lot of unburned fuel is going out the exhaust, deposits from the fuel can build up on the catalyst. If the engine is burning oil, oil deposits can also build up. It converts carbon monoxide, which is very deadly to all animals into carbon dioxide, which is not near as bad for the environment and it also helps prevent greenhouse gases because of this.
Losing power is a lot of times due to a clogged catalytic converter, have that checked out.