Question about 2002 Chevrolet Malibu
What does code p0741 mean? My check engine light came on and my auto shop said it was my o2 sensor and that I had this code but they said not to worry. The O2 sensor was changed and my car seems to be find but I am nervous
O2 sensors regulate the fuel mixture,they are primarily an emissions device.There might be as many as four of them on a car.If the check engine light is out you're all good ,stop worrying.cheers
Posted on May 27, 2014
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
you should have three oxygen sensors on your car, one for each bank of three cylinders; should be towards the Y pipe on each exhaust manifold. Additionally you should have one on the exhaust pipe before the cadilitic converter.
Posted on Nov 20, 2008
SOURCE: O2 sensor problem
I have a 97 gmc sierra .This truck is the same as the chevy ok.Its a 350 5.7 liter 4x4 Z71.I took it to auto zone which was my first mistake.They put it the scanner and said bad O2 sensor.Ok so which one is it i said.They dont know.Well there four (4) O2 sensors in this truck i hope you know that.I had to replace all four of them before i had to take it to a real shop.It seems the fuel pump i replaced a week earlier with an auto zone fuel pump was bad.Ive changed my feul pump 4 times now and have 235000 miles on still running.You need to get your fuel pressure checked.It should be 65 psi to start it and 55 psi to run it.If the pressures are good it could be a different O2 sensor or maybe the mass air flow senor.My last option would be the fuel pressure regulator because it seems to be a waste of time and money.I would get that fuel pressue checked first.Good luck.
Posted on Nov 25, 2008
1- check there is spark come from spark wires
2- check the fire timing by looking for every wire in the right place
3- check there is injector signl
4- check for any vacuom leak
5- try to clean the MAF by brake and parts cleaner
6- try to reset all the code and see what will come after that
Posted on Mar 14, 2009
The o2 is just reporting information,it did not mean that it was bad,there is either restriction,in the cat,or there is a contamination in the fuel,an additive might clear it up,maybe.
Posted on Jan 19, 2010
Tips for a great answer:
Aug 07, 2015 | Jeep Cars & Trucks
Feb 28, 2015 | Cars & Trucks
Oct 27, 2014 | Cars & Trucks
Oct 13, 2014 | 2006 Ford Escape
Mar 21, 2014 | 1996 Cadillac Eldorado
Aug 29, 2013 | 2000 Chevrolet S-10
Dec 04, 2010 | Mitsubishi Galant Cars & Trucks
Dec 02, 2010 | 1999 Jeep Grand Cherokee
Nov 13, 2009 | 2001 Mazda MPV
99 people viewed this question
Usually answered in minutes!