Question about Chrysler Pacifica
Posted by Anonymous on
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: 1999 vw jetta 2.0
Sounds like two problems. P0300 and P0303 are possibly spark plugs. They could be a coil pack but I'm leaning toward a spark plug problem because of the other two codes - they're indicating O2 sensor problems. If the O2 sensors are screwed up, the car reverts to preprogrammed, rich fuel maps that send excessive fuel through the engine. The reasoning is, if the ECU can't trust the O2 sensors to determine how much fuel to burn optimally, it'll pump a bunch of extra fuel through the engine to keep it safe. Having too little fuel (aka running lean) can destroy an engine, so the ECU plays it safe and runs rich (too much fuel) instead. The consequences of rich running are relatively minor compared to lean running, but can and do tend to create excessive carbon buildup on the catalytic converter and O2 sensors, as well as fouling spark plugs.
First thing to do though is to swap the wires on your coil packs and see if you end up with a misfire code for the same cylinder #3. If you do, then it's the plug or wire. If it moves, it's the coilpack. Replace whichever part is faulty. You'll probably need oxygen sensors too, before you can clear all the codes.
Posted on Sep 02, 2008
I had the same problem I disconnected the battery to reset computer when I was changing my plugs & ignition wires! hope this helps
Posted on Dec 23, 2008
Posted on Feb 14, 2009
Tips for a great answer:
Dec 14, 2013 | 2006 Chevrolet HHR
Apr 22, 2013 | Cars & Trucks
Sep 02, 2012 | Ford Taurus Cars & Trucks
Jul 19, 2012 | 2004 Ford Escape
Jan 17, 2011 | 2002 Mercury Sable
Jun 06, 2010 | 2002 Lincoln LS
Mar 23, 2009 | 2002 Ford Windstar Cargo
Dec 31, 2008 | 2004 Mazda Tribute
33 people viewed this question
Usually answered in minutes!