94 BUICK LESABRE WON'T START

  • Tiny
  • jayson360
  • 1994 Buick Lesabre
  • 214,000 miles

94 Buick Lesbare. Its not firing so it won't start. It turns over but won't start. It will start up whenever it wants too.

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Monday, July 30th, 2012 AT 5:04 PM

11 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,299 posts

So when it doesnt start have you checked the actual fuel pressure and for a nice blue spark?

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Monday, July 30th, 2012 AT 5:11 PM
  • Tiny
  • jayson360
  • Member

Definitley no blue spark. Me and my dad checked that. Fuel pressure is also good.

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Friday, August 10th, 2012 AT 11:02 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,299 posts

So do you have any kind of spark when it doesnt start?

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Friday, August 10th, 2012 AT 11:07 PM
  • Tiny
  • jayson360
  • Member

Theres no spark at all.

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Thursday, August 16th, 2012 AT 8:38 PM
  • Tiny
  • saturntech9
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  • 29,299 posts

Have you checked for codes yet?What size engine do you have?

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Thursday, August 16th, 2012 AT 8:41 PM
  • Tiny
  • saturntech9
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  • 29,299 posts

You could have a bad crankshaft position sensor.

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Thursday, August 16th, 2012 AT 9:33 PM
  • Tiny
  • jayson360
  • Member

I'm not picking up any codes. It has a 3.8 v6. I bought a crank ssensor. Also purchased a knock sensor. I know where the crank sensor is but not sure where the knock sensor is?

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Thursday, August 16th, 2012 AT 10:36 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,299 posts

The knock sensor isnt going to cause you to loose spark. That just alters your timing while the engine is running as needed. Do you have a multimeter?If so we can test your crankshaft sensor before you replace it. Resistance for the crankshaft position sensor should be 800-1200 ohms.

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Thursday, August 16th, 2012 AT 11:06 PM
  • Tiny
  • jayson360
  • Member

I replaced the knock sensor, really wasn't sure what it did but it got replaced. Also replaced the ignition module, camshaft sensor and the ignition itself, not the cylinder where the key goes. Not sure what else to do.

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Friday, August 24th, 2012 AT 10:43 PM
  • Tiny
  • jayson360
  • Member

And I really don't think it's the crank sensor either. From what i've been told, when those stop working they will not start at all. Mine just runs and quits and runs and quits.

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Friday, August 24th, 2012 AT 10:44 PM

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