94 WON'T START

1994 Buick Lesabre

Tiny

jayson360

July, 30, 2012 AT 5:04 PM

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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11 Answers

Tiny

saturntech9

July, 30, 2012 AT 5:11 PM

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

Tiny

jayson360

August, 10, 2012 AT 11:02 PM

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

Tiny

saturntech9

August, 10, 2012 AT 11:07 PM

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

Tiny

jayson360

August, 16, 2012 AT 8:38 PM

Theres no spark at all.

Tiny

saturntech9

August, 16, 2012 AT 8:41 PM

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

Tiny

saturntech9

August, 16, 2012 AT 9:33 PM

You could have a bad crankshaft position sensor.

Tiny

jayson360

August, 16, 2012 AT 10:36 PM

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?

Tiny

saturntech9

August, 16, 2012 AT 11:06 PM

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.

Tiny

jayson360

August, 24, 2012 AT 10:43 PM

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.

Tiny

jayson360

August, 24, 2012 AT 10:44 PM

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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