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Will start then dies after 15-20 seconds

Tiny
NET9
  • MEMBER
  • 2004 CHEVROLET EXPRESS
  • 6.0L
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 330,000 MILES
My wife was driving down the road and the van just died. She tried to start it but did not start. It sat for 2 days as I was out of town, both of us went and the van started and ran for almost 30 seconds then it died. My company has had a similar problem with an older chevy express and it did the same thing. The crank case sensor was bad. It has proper fuel pressure when cranking so I know it's not the fuel pump. I plan on changing the fuel filter, good idea with 330,000 miles on it. In your professional opinion, do you think it is also the crank case sensor? If so, where is it located? Seen videos on line and they say it's under the starter. Is this true?
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Sunday, August 31st, 2014 AT 4:37 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fuelpressure with a gauge first. Autoparts rent it. Try resetting your security system
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Monday, September 1st, 2014 AT 6:14 AM
Tiny
NET9
  • MEMBER
  • 14 POSTS
Checked fuel pressure it's at 66 psi and reset anti theft system and still doesn't start. Where is the crank case sensor located on this van? My company has the same exact year make and model van and this happened to one of those vans and it was the crank case sensor. Just need to know the location of it.
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Tuesday, September 2nd, 2014 AT 1:09 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may or may not fix it that is why you scan for codes but see pic.
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Tuesday, September 2nd, 2014 AT 1:13 PM

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