It starts but will not crank?

Tiny
MECHANICALLY FIT
  • MEMBER
  • 1999 JEEP WRANGLER
  • 4.0L
  • 6 CYL
  • 4WD
  • MANUAL
  • 165,000 MILES
Replaced crank sensor 7 days ago and ran great. We just had a snow storm in CT. And single digit temps. Went out this morning and did not want to turn over. Battery Good, but no spark at ignition coil? I am stumped. Do you guys/ gals have any ideas? I am currently attending Auto Tech. School and I don't want to look like a low grade moron to my class mates. I have done everything I can think of. Please help me.
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Thursday, February 6th, 2014 AT 1:37 PM

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Tiny
JDL
  • EXPERT
I'd have to check primary voltage at the coil, B+, go from there.
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Thursday, February 6th, 2014 AT 2:42 PM
Tiny
JDL
  • EXPERT
Just to add, the asd relay supplies voltage to several systems including the B+ side of your ignition coil. The computer grounds the control side of asd relay. Can you check for applicable trouble codes? To check for codes, at the least, you need an obd2 code reader that will work with your vehicle.
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Thursday, February 6th, 2014 AT 2:55 PM

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