03 crrown vic police interceptor runs rough after engine wash sprayed a lot of water near air intake
2 Answers
Water. Electronics and gas powered engines don't mix. You got something wet and now it's not functioning properly. Probably the AFM.
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What happens most of the time that water gets below the spark coil boot and turns to steam and of course the spark jumps and misfires . Remove coil with boot and dry out the best you can with paper towels , then apply WD-40 to boot and a little on plug..This will displace any moisture until it drys out . ( Spark coil assembly's are easy to remove. Detach wire plug by pushing up on latch , then use 7mm socket or wrench, remove hold down screw. Give a twist and tug and pull out..