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Engine stopped running and will not start up?

Tiny
LOVEBUG1
  • MEMBER
  • 2003 GMC ENVOY
  • 139,000 MILES
My truck was in a flood, and the engine stopped working while in the water, the water was coming in the doors, we let it dry out for a couple of days, then it ran ok, now it wont start. I have comprehensive insurance now, can I use that to pay for the repairs, even though I didnt have it at the time of the flood.
Thanks
I'm in such a pickle!
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Wednesday, July 17th, 2013 AT 9:01 PM

12 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,945 POSTS
It sounds like you got water in the fuel. When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

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

Please run down this guide and report back.
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Wednesday, July 17th, 2013 AT 10:32 PM
Tiny
LOVEBUG1
  • MEMBER
  • 1 POST
Yep, I dropped the tank and installed a new pump while at the same time I flushed the tank out you could see water in the tank btw, she runs great again! Thank you so much
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Sunday, July 28th, 2013 AT 11:14 AM
Tiny
47LOUGEAN
  • MEMBER
  • 3 POSTS
  • 2000 GMC ENVOY
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 15,000 MILES
Car starts and immediately stalls. Suspect a problem with security system. (Factory passlock) won't run on ether and has fuel pressure when it stalls. Went so far as to bypass fuel pump controls. Checked all pcm hots and grounds.I have power to ign. Module and coil. Information I have on passlock seems to indicate that it disables engine by interrupting fuel pump circuit. (Not energizing relay). I bypassed relay, still nothing. Does the passlock disable ignition? Thought about crank sensor but am not aware of these being an issue. It is difficult for me to get a reading on sensor with my scan tool. I have limited data reading capabilities. I am starting to suspect pcm.
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try resetting security system see pic
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
47LOUGEAN
  • MEMBER
  • 3 POSTS
Tried the relearn procedure to no avail. After start attempt, the security light does not remain 'on'. Waited the 10 minutes anyway and repeated the procedure as per instructions. No good. Any further ideas?
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then go to the old standby and scan for codes and check fuelpressure with agauge autoparts rent it. Also check fuses underhood
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
47LOUGEAN
  • MEMBER
  • 3 POSTS
Tried all this before I submitted the question initially. Thanks for trying. How do I get a refund?
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I turned it in so you should have it soon.
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
THIS IS MIKE
  • MECHANIC
  • 686 POSTS
We are sorry we were not able to help you. Your refund is complete.
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
DDMAISO
  • MEMBER
  • 1 POST
  • 2002 GMC ENVOY
Engine Mechanical problem
2002 GMC Envoy 6 cyl Two Wheel Drive Automatic

the engine just died, it turns over no spark? Fuel pressure is good and lines good
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Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
No spark? None of the cylinders are getting spark? Use a spark tester to find out if its putting out little or none.

Check the crank shaft sensor for resistance and voltage when cranking.

Getting +12v to the coil wiht key on?
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+1
Wednesday, October 28th, 2020 AT 11:18 AM (Merged)
Tiny
ALLENYAHWEH
  • MEMBER
  • 2 POSTS
I am having this same problem, I do have 12v at coil plug in, also ground in connector, but the center wire which is blue gets nothing during spinn over. Trying to find a ignition diagram but no success yet will not give up. I will let u know what all I had to do to fixxx
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-2
Wednesday, October 28th, 2020 AT 11:18 AM (Merged)

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