Will changing the fuel pump and fuel filter help bad ideling in my car?

My car idles bad at standstill and when taking off. Im having to push the gas pedal in more to take off at stop lights and signs therefore I feel like Im sucking up my gas.I drive a 02%26#039; Benz E320.|||Fuel injector cleaner, tune up(spark plugs, wires, distrib cap), higher octane gas. New fuel pump and filter can%26#039;t hurt. You may be able to adjust the throttle cable bolt a little as a temporary fix. If you get a manual for your car, it will be easier to perform maintenance on it. You may try having the fuel injectors professionally cleaned. Rough idle can come from alot of things, unfortuanately.|||sounds more like a fuel, air mixture issue. now if the miles are high, then fuel pump or even fuel filter could be an issue. being a benz you should be able to put a scanner on the car and see what codes show up for issues.|||Sell it and get a car that won%26#039;t cost you an arm and a leg to take it to the Benz Surgeon...


But doing what you said sure couldn%26#039;t hurt it.|||Try this: get some carb cleaner from the auto parts store.remove the filter housing around what we in the automotive mechanics business affectionately called the throttle body. what happens is over time the thang get all gummy and won close the flap, if that flap do not close then them air get into the mix and fluctuates the engine RPMs. this can cause the motor to die at a stop when the air conditioner is running. It is an easy fix. just clean the flap with the spray while moving the throttle linkage. be sure to put back the air filter housing onto the throttle body before starting the vehicle. It will be as if you had a tuneup.|||I doubt that fuel filter or pump is the problem. maybe fuel filter if it is completely clogged.





The first thing I would do is clean out the throttle body (small can of $2 carb cleaner, disconnect intake at throttle body, and clean the throttle plate) It should take 30 minutes or so. If you have not change fuel filter in last 50K miles, then I would change that as well.





If that does not fix the problem, then I would look at fuel pressure regulator. Pressure test the fuel system to make sure that the fuel pressure regulator is working properly.





The under power of the car is rarely has anything to do with problem with the fuel system. problem with fuel system would either stall the car, or generate puff of black smoke. Has nothing to do with the fuel system. If you feel that the car is underpowered, then it has more to do with ignition system. When was the last time you%26#039;ve changed the spark plugs? I would look into ignition system tune up first.|||B service and scan at a MB dealer.