Close
Q:

when i turn my defroster on it kills my engine and lights on 1999 Ford Escort

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
could this be a shorted relay or the altenator
(1) Answer
This is a tough one, when you turn on the defrost, the A?C Compressor should turn on and if the compressor is bad, it could cause the engine to stall. Try turning on the A/C and see if the same thing happens.