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the break pedel feel bumpy when breaking

I noticed this happening after I plugged in my son's Nintendo DS car charger to charge his game. Next thing I know my power windows cannot go up or down. Also that I cannot lock or unlock my car. ANYONE with the same problem or is experienced with cars, HELP ME!!!!!

I noticed this happening after I plugged in my son's Nintendo DS car charger to charge his game. Next thing I know my power windows cannot go up or down. Also that I cannot lock or unlock my car. ANYONE with the same problem or is experienced with cars, HELP ME!!!!!

I went to a mechanic and he pulled 3 codes. EGR valve, Air flow meter, air temp. sensor. He quoted me $1000 to diagnose each individual issue and fix. Is there a way I can diagnose each problem so I can fix them under a cheap budget?

sometimes my car sputters (like it may die), sometimes it drives fine. it is hit or miss. it tends to be ok with short trips, but, sputters on longer ones. after driving it more than usual the other day, it was sputtering. when i stepped on the gas to drive off of my street it died. (this is the first time it actually died). it shut off, power out...had to restart with the key. at first it would not restart...only sputtered. and then when it would start, when i would step on the gas to move it...it would die again, and i'd have to restart it. it's at the mechanics now. he said he took it for a test drive and it didn't do anything. (like i said, it's hit or miss). so, now he is guessing at what it could be, and has so far come up with mass airflow sensor, fuel line/fuel pump, coils, and several other things. i need to know the actual part that needs replaced, i cannot afford to pay for multiple maybes. has this happened to anyone else...and if you know anything that could help, it would be much appreciated. he also said that he ran it for codes, but, nothing came up.

It comes on when the fuel is low and stays on

what could be the problem

fuel tank pressure sensor

gas very slow to fill it up it spits gas out also yesterday the check engine light started flashing for a min then stopped it done it twice please help someone

I need to test the power to the fuel pump and test the fuel pump to assure it is working. How do I get to it? Do I have to drop the gas tank or can I get to it from the floor board? It's a 2000 mercedes sedan S500.

I have checked the breakers under the hood. ALL of the fuses, maxi fuses.... STill nothing. Any ideas? Im baffled!

Only when it is hot out. It chugs when driving it.

One pump to switches, they reverse the current to the pump to determine where the fluid goes, the rear switch gives me 12 volts but the front gives me no volts. Is there a pump relay somewhere? The manual does mention a pump relay fuse however they never mention a pump relay. Is there one and where is it???

I have to manually push down and up on all the doors to lock and open, the driver door I have to use the key to open and look. The doors do slowly close with that close assist feature but the trunk has to be slam shut. Fuses are all ok. I can hear the closing assist pump make a little Hiss sound when the doors close the rest of the way in by them selves. Also if I close a door and sit in the car real faint I can hear the motor to the PSE pump come on. The remote just tunes the antitheft system on and off. Can someone please help me out here I would really appreciate it thanks...

The car will stop at random times and will typically start back but feels like it is missing