Truck not starting

1998 CHEVROLET SUBURBAN
178,768 MILES • 0.7L • 5 CYL • 4WD • AUTOMATIC
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TIFFANY KALUA
  • MEMBER
  • 2 POSTS
Truck turns on but won't turn over. Replaced fuel pump, then it drove fine. Replaced ICM, coil, distributor cap and rotor.
Feb 11, 2022 at 8:20 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Tiffany,

Welcome. I need to know if the starter is engaging and the engine not starting or if the starter doesn't engage.

Let me know so I know which direction to go.

Joe
Feb 11, 2022 at 8:27 AM
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TIFFANY KALUA
  • MEMBER
  • 2 POSTS
Yes, the starter does engage. Only issue I am running into, is no spark to the coil.
Mar 16, 2022 at 11:23 PM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Tiffany,

If you aren't getting spark to the spark plugs, chances are it is related to the crankshaft position sensor. If you have a tachometer in the truck, crank the engine and see if the gauge moves a little. If you have a live data scan tool, check for an RPM signal when cranking the engine. If there isn't one, the sensor is my first suspect.

Take a look through this link and let me know if it seems to mirror what you experience.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

If it does, that is where I would start. Here is a link that explains how one is replaced:

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

If you look at the directions below, they are the directions specific to your vehicle.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.
Mar 17, 2022 at 7:42 AM
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