1984 Cadillac Deville wont stay running

Tiny
ANDREW_SCAMP
  • MEMBER
  • 1984 CADILLAC DEVILLE
Computer problem
1984 Cadillac Deville Two Wheel Drive Automatic 63,000 miles

hi when I turn over the engine it fires first turn then emediatly shuts off I have no idea whats wrong then every once in awhile it fires up and runs fine then it will suddenly shut off and do the same thing fire once then shut off its realy frustrating can any one give me an idea of what it might be
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Thursday, July 2nd, 2009 AT 7:46 PM

8 Replies

Tiny
RASMATAZ
  • MEMBER
Check the fuel pressure and comeback with the readings we start here
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Thursday, July 2nd, 2009 AT 8:00 PM
Tiny
ANDREW_SCAMP
  • MEMBER
When I purg the fuel line it sprays pretty good about a foot high I put a new computer and a new fuel filter same problem turns over fires once then shuts off
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Saturday, July 4th, 2009 AT 6:09 PM
Tiny
RASMATAZ
  • MEMBER
Read the fuel pressure with a fuel pressure gauge and give me the readings I need this info before we can continue
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Saturday, July 4th, 2009 AT 6:44 PM
Tiny
ANDREW_SCAMP
  • MEMBER
Its at between 18 and 20 psi
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Saturday, July 4th, 2009 AT 7:05 PM
Tiny
RASMATAZ
  • MEMBER
Is this a throttle body or port injection fuel system?
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Sunday, July 5th, 2009 AT 12:04 AM
Tiny
ANDREW_SCAMP
  • MEMBER
Throttle body injection
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Monday, July 6th, 2009 AT 1:43 AM
Tiny
RASMATAZ
  • MEMBER
The fuel pressure should be 8-14psi you're on the high side 18/20 psi. Check the fuel pressure regulator and for a clogged return line-
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Monday, July 6th, 2009 AT 4:28 PM
Tiny
ANDREW_SCAMP
  • MEMBER
Thanks for all your help I cheked the return line and I checked the presure with a new gauge because the one I had was realy cheap and realy old I got right arond 10 I all so replaced the module in the distributor thinkin that might be it nope realy dont no what else to check I have good spark and I replaced the computer but still it fires once then shuts off could it be the injecters in the throttle body? Whats the simptoms of a bad throttle body injecter?
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Tuesday, July 7th, 2009 AT 1:12 AM

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