Engine cranks, but will not start

Tiny
LUKE BRIGHAM
  • MEMBER
  • 1994 JEEP WANGLER YJ
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
My vehicle acted funny while driving at highway speeds. Choked and sputtered when I would hit the throttle almost like it was out of gas, but I had over half a tank of fuel. The next time I hit the gas at about sixty five mph, it completely shut off. I replaced the fuel filter on the side of the road with no better results. I can hear the fuel pump kick on, and I have fuel in the rail at decent pressure (have not checked with a gauge since I do not have one). Came home and put new spark plugs in as well, but the engine just cranks with no start.
I replaced the crank position sensor this afternoon and have not gotten a start. I realized I should have checked first for a spark, so when I checked, I found I had no spark from the coil. Would my next step be to replace the coil? Or is there somewhere else I am not looking, but should be? I am not getting any codes since I had to replace the battery part way through.
Monday, July 16th, 2018 AT 4:40 PM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,245 POSTS
Hello,

There is a ASD relay that needs to be checked. Here is a guide to help you and the engine wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (below). Please let us know what you find.

Cheers, Ken
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Wednesday, July 18th, 2018 AT 4:56 PM
Tiny
LUKE BRIGHAM
  • MEMBER
  • 3 POSTS
Thanks Ken! I will start there when I get home from work on Saturday morning. I appreciate the reply!
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Wednesday, July 18th, 2018 AT 8:23 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,245 POSTS
Please let us know Luke.
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Thursday, July 19th, 2018 AT 10:55 AM
Tiny
LUKE BRIGHAM
  • MEMBER
  • 3 POSTS
I will absolutely keep you posted!
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Friday, July 20th, 2018 AT 7:24 AM

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