Has a sound coming from near driver's headlight area. Checked and tightened gas cap, but sound still come back. Seems to be related to a large leak in the EVAC Emission Control System. How severe is this? What is estimated cost to fix.
SOURCE: can't get gas cap back on 1999 e320
Check the metal tabs on the gas cap they should be aligned with the little groves if there not the cap won't go on correctly or close all the way and you will get the engine light coming on. Happen to me and I used a pair of needle nose pliers to move the tabs back into place (wasnt easy) and then it worked fine...Hope this helps you.
Kelii
P.S my cap got like that after I fueled the car and was in a hurry now I make sure everything lines up before I tighten it.
SOURCE: ENGINE CUTS OUT WHEN COLD
replace the overvoltage protection relay...red top with 10a fuse in it next to the motronic behind the battery
SOURCE: My 1994 Mercedes Benz SL500 radio display turns on, but no sound?
I had same problem with my 1994 SL600. Also when this happens you will lose your interior door lights when you open the doors. My problem was solved by taking out the, A-white 40 amp 12V Relay and cleaning off the 6-prongs and reinstalling. It is located in the box underhood ahead of the main fuse box. Just need a phillips screwdriver. It is the fartherest relay in back left. I had to pull the one out in front of it to be able to remove the white one. You can hear it click when you push in dooropen switch. When working right you do not hear it. Hope this helps.
SOURCE: 2003 c240 check engine light is on,car runs
HAVE CAR HOOK UP TO A DIAGNOSTIC SCANNER TO SEE WHAT CODE IS.MOST OF THE TIME IF CHECK ENGINE LIGHT COMES ON AND CAR STILL RUN FINE.YOU COULD HAVE EMISSION EVAPORATIVE LEAK.YOU COULD HAVE A SMALL MISFIRE.OR YOUR ALTERNATOR COULD BE OVERCHARGING OR UNDERCHARGING BATTERY.MANY THINGS WILL CAUSE CHECK ENGINE LIGHT TO COME ON.HAVE IT SCANNED.IT WILL SPOT THE PROBLEM FASTER.
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