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O2 Sensor questions


lehass

New Member
Joined
Sep 29, 2015
Messages
1
Reaction score
0
Vehicle Year
1990
Make / Model
ford
Transmission
Manual
I have a 1990 2.9L Ranger that has 268K miles on it and I know that the o2 sensors have never been replaced. I can only find one right before the cat. Is there any others on this engine or is that the only one. And since the vehicle is "broken in" could the o2 sensor go bad or malfunction without ever throwing a check engine light?
 

sjr53

Well-Known Member
Joined
Dec 23, 2008
Messages
120
Reaction score
2
Location
Grand Forks North Dakota
Vehicle Year
1988
Make / Model
Ford
Engine Size
2.9L
Transmission
Manual
There is just the one O2 sensor and that is way more mileage on it than it was meant to handle. You may get a gas mileage improvement that would cover the cost of a new sensor and O2 wrench/socket needed to easily replace it.
 

enjr44

Well-Known Member
U.S. Military - Veteran
Joined
Mar 24, 2013
Messages
1,143
Reaction score
9
Age
80
Location
Renton, WA
Vehicle Year
02 2X4; 08 FX4
Make / Model
Ford
Engine Size
4.0 SOHC
Transmission
Automatic
Something like two and a half times.
 

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