Ford 4.6 hesatation and no get up and go?

Mike V

New member
The thing idles funny at times. I have disconnected plug wires while it is running and 3 of the 8 don't make a difference with the way it runs but the 3 I disconnect are firing because the plugs fire and a heat gun on the exhaust shows the same temp. compression is the same between the cylinders.
I get 3 codes, temp sensor over temp, mas air flow sensor, and 02 sensor.

This is a different motor then what was in the van I did hear the motor run before I bought it so I know it ran good. Could it be a vacuum leak? or ? Or maybe a bad injectors on the 3 cylinders? Don't know but i am at my wits end. Any help please.
 
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