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stay classy waterford
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288 Posts
Discussion Starter · #1 · (Edited)
Here is what I got. 92xj auto 4.0. Have power to fuel pump, and power to coil, only when fuel pump is on( first turn key and off and on while cranking). Have replaced the balast resistor and have a new coil but still the same. What would make the coil only power up when fuel pump on? Also, no spark from coil at all. new coil with voltage at connector. Im stumped:confused:

I have changed crank sensor and no change
 

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if memory serves the signal is sent from the crank sensor to the computer then the computer grounds the coil, I beleive there would be a 12v constant at the coil when the key is on. could be a bad computer.
 
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