I have a V6 2.5 2000 Sebring. At first the car would idle so low when coming to a stop it cut off. They supposedly ran a diagnostic on it at the dealership and told me to replace the upstream 02 sensor which I did.That did not work so I took it back. They said replace the downstream sensor..it did not work. I took it back and they wanted me to leave it so they could (figure)it out. Needless to say I did not. We hooked it up to an OBD11 and it shows a mass air flow. I have changed the spark plugs..hopefully he did all six,a new distributor, rotor and cap. You can hear a swooshing sound under the hood but I can not pinpoint it. Is it possible there was a vac leak all along and has increased? The car uses no oil and there is no water in it either. The gas mileage sucks though. They also said it was misfiring on all 6 cylinders. Typical with a vac leak right? Please help,this car is driving me nuts. At times it idles irratticaly and then at times it idles perfectly but still skips something terrible. If I knew I could put the top intake back on correctly I would check it out myself. This is where I believe the swooshing is coming from. Please help.
It does sounds like you may have a vacuum leak, you may also have an idle air control valve that has malfunctioned. If your check engine light is set, you can visit your local auto parts for a free diagnostic check to be sure.
〉 Answered on Jun 25th, 2009 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
Hi Rhonda -
It does sound like what youare describing might be a vacuum leak of some sort, although keep in mind that the Mas Air Flow sensor itself is also prone to failure and will set the same fault codes and often similiar symptoms. The fact that you are hearing 'rugshing' air though, does point towards a leak.
If you are feeling adventurous, purchase a can or Carburator Cleaner. Spray it around the intake, the air boot and any vacuum lines you can see all while the engine is running.
If you hear the engine idle raise suddenly while spraying in any particular spot - you have found your leak!
〉 Answered on Jun 25th, 2009 by Bogi Lateiner, Owner and Technician at 180 Degrees Automotive
All of these things can cause a multi-cylinder misfire;
CAM, CRANK, VALVE TIMING, OR VACUUM PROBLEM
ELECTONIC IGNITION COIL OUTPUT LOW
ENGINE MECHANICAL PROBLEM
SECONDARY IGNITION PATTERN IRREGULAR
FUEL PRESSURE LEAK DOWN OUT OF SPECIFICATION
FUEL PUMP AMPERAGE OUT OF SPECIFICATION
FUEL PUMP CAPACITY OUT OF SPECIFICATION
FUEL PUMP PRESSURE OUT OF SPECIFICATION
Many times when you get a code for an oxygen sensor issue, its really due to a problem thats created farther up the line from it. For instance if the vehicle is running rough, it can set an O2 sensor code.
The vehicle has an Air idle control motor which works with the computer to adjust the idle. It sounds like you might have more than one problem there. I would check to see if there is an Ask Patty Certified Female Friendly recommended shop in your area and get some help. Make sure you make a list of everything you have done so they will not duplicate it. Good luck!
〉 Answered on Jun 26th, 2009 by Karen Davis, Service Manager at Smith Stokes