I just replaced my oil pressure sender on a 1995 F-250 5.0 Lt.. Now the gauge reads half way when the key is turned on, and below zero when the engine is running.
The one I removed is longer and looks like it has a metal shield over the unit. the replacement was much shorter .
wrong part,take it back to where you bought it,new parts are sometimes packaged wrong,sounds like this is what happened.look at part before leaving store.makeing sure you got what you removed.
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