the car is 1995 jetta vr6, and ive been working on it waayyy too long without getting any results. the problem i BELIEVE has something to do with the crankshaft position sensor. when the problem began, the car would take 3-10 cranking attempts to get spark and fire it up. it would start up completely randomly, when i would turn the key, it would either start immediately or crank as long as you hold it without starting. I decided finally to replace the CPS ($200), hoping it would fix the problem, but now it wont start at all. I tested the sensor resistance and it is good. I then got a multimeter and tested the (green) signal wire's output without it being plugged into the computer end of the harness, and it got signal when the engine was cranked, but when i tested it when plugged in to the computer end harness, i get no voltage reading, therefore no signal to ecm. how could just plugging in the sensor cancel the voltage?