Question about Ford F-150
The ECM isn't getting good readings. Could be the front one or the back. Several things to check. First check all of the vacuum hoses and fittings. Ford has always had problems with the fittings mostly. If they are soft, mushy, or collapsed. replace them. Next would be to check the continuity /resistance of the O2 wires. If they are above 5 ohms resistance, run new wires. Also check for corrosion at the plugs.
Posted on Dec 03, 2014
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Posted on Jan 02, 2017
There are 2 O2 sensors on your Ford Ranger. There will be one a foot or two before the catalytic converter and one a foot or two after the converter. I don't have a diagram but you will only need to look for the identical sensor located up or downstream from the first one that you replaced.
Posted on May 17, 2009
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