Question about 1999 Chevrolet Malibu
Upstream oxygen sensor or bank 1 as its called is the closest to the exhaust manifold. now for the question back there are usually 4 o2 sensors on a car bank(front)1 sensor 1, bank 1 sensor 2 and (rear) bank 2 sensor 1, bank 2 sensor 2
Posted on Sep 03, 2010
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.
New users get to try the service completely Free afterwhich it costs $6 per call 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: Upstream O2 sensor location?
That is the first sensor closest to the engine. The downstream sensor is the one behind the converter.
Please rate this response , and let me know if ya need more help!
Posted on Aug 31, 2008
Upstream, as in ahead of the converter, back toward engine. Start at converter and work your way back, should be on exhaust pipe or even on manifold.
Posted on Jan 11, 2009
In my 1990-1995 manual it is Black/Dark Green.
Dark green/orange is 12 V supply, Black is ground, Black/Light Blue also comes from the powertrain control module but is common to many other sensors.
Posted on Dec 28, 2008
SOURCE: replace oxygen sensors
these engines have 1 upstream o2 sensor and 1 downstream o2 sensor..the 1 in the rear exhaust manifold is the upstream and the 1 after the converter is the downstream..make sure you replaced the right one
Posted on May 16, 2009
Tips for a great answer:
Feb 23, 2015 | Mercury Cars & Trucks
Jul 04, 2014 | 1999 Hyundai Sonata
Dec 13, 2011 | 1999 Jeep Grand Cherokee
May 19, 2011 | Jeep Grand Cherokee Cars & Trucks
Mar 15, 2011 | GMC Yukon Cars & Trucks
Jan 04, 2011 | 2001 Pontiac Montana
Sep 27, 2010 | 1996 Lincoln Town Car
Nov 07, 2009 | 2000 Buick LeSabre
Sep 09, 2009 | 2001 Chrysler Sebring
Jan 11, 2009 | 1996 Nissan 240SX
825 people viewed this question
Usually answered in minutes!