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1996 Cadillac Seville starting

Tiny
DIABLO
  • MEMBER
  • 1996 CADILLAC SEVILLE
  • V8
  • 2WD
  • AUTOMATIC
  • 76,000 MILES
At times this car will not start. A shot of starter fluid and it cranks and runs fine. This does not happen all the time, just frquently enough to be a bother. The fuel presure regulator has been replaced, the 2 second pump-up is fine, fuel pressure us 55 lbs, even atstart-up. Car runs great once it starts. Seems this problem occures more frequently after the car has been idle for several days. Also, seems to be more of a problem since temperture change in the fall. We live in metro Atlanta where they use fomulated fuel in the summer for polution and I do not know if this might be a contributng factor. Have taken it to several mechanics but it starts for them so they cannot replicate the condidion to diagnose. Any suggestiond would be appreciated.
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Sunday, December 16th, 2007 AT 8:01 PM

4 Replies

Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
Any gas fumes under hood? Where did you buy the regulator at?
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Thursday, December 20th, 2007 AT 11:34 PM
Tiny
DIABLO
  • MEMBER
  • 3 POSTS
Regulator from NAPA. No gasoline odors under hood. When car fires up it occassionally backfires once. No error codes on dash computer at time of not starting. This thing is a real mystery.
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Friday, December 21st, 2007 AT 4:58 PM
Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
Go get a the sensor thats on top of the throttle body, sorry forget the name, its a little black rectangle, atmosphere pressure sensor, its not that expensive, may have to buy it at the dealer
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Friday, December 21st, 2007 AT 5:59 PM
Tiny
DIABLO
  • MEMBER
  • 3 POSTS
I'll look for the sensor and replace it and let you know. Thanks for the suggestion.
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Friday, December 21st, 2007 AT 8:09 PM

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