• Register Today It's free! This box and some ads will disappear once registered!

^^Searches ExplorerForum.com^^

New O2 sensor, same codes.

1998rollover

Well-Known Member
Joined
November 10, 2008
Messages
223
Reaction score
4
City, State
Weiser, ID
Year, Model & Trim Level
1998 Mountaineer
1130 1131 1132 all Bank 1 upstream sensor
0172 downstream sensor too lean bank 2
0175 downstream sensor too rich bank 1
on a 1998 5.0

All O2 sensors, cats, injectors, coils, cam and crank sensors, plugs, wires, timing chain and sprockets, IAC, EGR valve and pressure sensor and pipe (pipe had a crack), ECM replaced with one updated to last software, PCV valve, TPS.

All that's been changed and still those codes randomly pop up and it runs like crap. But sometimes it runs great.

It can't be the MAF because that would cause those errors for both banks. I've cleaned the MAF with special MAF cleaner.

What else can cause this?
 




BrooklynBay

Moderator & long time member.
Staff member
Moderator
Elite Explorer
Joined
November 11, 2005
Messages
55,053
Reaction score
668
City, State
Brooklyn, NY
Year, Model & Trim Level
88 89 93 95 96 Aerostars




Top