For the past week now, on my 91 SE I'll be driving and the check engine light comes on. When it comes on the engine starts to miss. I go under the hood and move the connector(s) on the rear cylinder's fuel injectors and it runs fine. If I barely move the connectors the cylinder will start to miss. Does this mean my injector(s) are goin or just maybe a bad connection?

 

bad connection. brittle old wires will do that to ya.

 

look at the connector, it may be corroded, or as shock said, the wires may be brittle