Cranks not starting

Tiny
HAMBURGERBOPMC
  • MEMBER
  • 2004 GMC YUKON
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 190,109 MILES
I replaced the alternator, crank shaft positioning sensor and the wires that connect it. All the fuses are good. Can you help me figure out the problem?
Thursday, November 19th, 2020 AT 11:13 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

If this happened all at once, chances are it is either an ignition spark issue at the plugs or a fuel related issue.

First, here is a link that explains how to test and check the things most commonly related to a crank no start condition:

https://www.2carpros.com/articles/car-cranks-but-wont-start

Here is the easiest way I know to check if it is a spark or fuel related issue. See if the engine starts for a couple of seconds using starting fluid. If it starts and then stalls, we know it's fuel related. If it doesn't start, then it's likely ignition related.

Try that and let me know the results. Also, let me know if you can think of anything that may have led to the issue, symptoms prior to failure, or anything you can think of that may help.

Take care,
Joe
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Friday, November 20th, 2020 AT 6:29 PM
Tiny
HAMBURGERBOPMC
  • MEMBER
  • 4 POSTS
Hello and thank for the information Joe. But I've done all that over and over. But the thing is the battery gets drained really fast after turning over a couple of times.
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Saturday, November 21st, 2020 AT 6:30 AM
Tiny
HAMBURGERBOPMC
  • MEMBER
  • 4 POSTS
I had the starter tested and it was good. I'm trying to figure what's causing it not to start.
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Saturday, November 21st, 2020 AT 6:32 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

I need to confirm something. Is the starter working properly? Are you certain that it isn't drawing too many amps?

Next, does it have both fuel and spark? And, is it possible for you to record it cranking so I can hear it?

Let me know.
Joe
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Saturday, November 21st, 2020 AT 8:44 PM

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