3 days ago my 92 240 wagon started running very rough, shaking and having trouble accelerating.
Thought maybe bad gas?
Filled tank and put some injector cleaner in tank at same time.
No diff.
Checked codes.
Nothing except the o2 sensor, which I already knew about.
Looked under hood to check connections of hoses, etc, and put my hand, randomly, on one of the injector connectors. It was loose! Don't know how that happened, but putting it back properly took care of issue, and it runs well now.
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