I have an 08 f150 with a 5.4. I got this stupid idea to wash the motor and aftter that my ac has never worked again. Any ideas why or where to start?

 

try to better describe issue.

?Is compressor running but not getting cold?

?Compressor not kicking on?

? Checked fuses?

? have you visually checked the plugs (harness plug in) at compressor or anything else ?

 

The A/C clutch fuse is in the engine bay fuse box, it may of gotten wet and blew... check it out.