1983 Cadillac Deville vehicle not staying on

Tiny
MATTHEWGARCIA20
  • MEMBER
  • 1983 CADILLAC DEVILLE
  • V8
  • 2WD
  • AUTOMATIC
  • 167,000 MILES
I have a 1983 Cadillac coupe deville that was running check temp light came on and off shortly after it died out on me and now wont stay running will start but must keep high idled if I attempt to switch gears it dies out have switched fuel filter spark plugs oil and still no luck have had it looked at by a friend and was told it was my throttle body and then have also heard possibly my timing I don't know how to adjust my timing are away to check it. Any advice would be really helpful and possibly any other suggestions would be helpful thanks
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Friday, September 17th, 2010 AT 5:42 PM

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Tiny
ERNEST CLARK
  • EXPERT
My first guess would be a failing fuel pump. You need to check the fuel pressure with the key on/engine off, and then with the Key on/Engine on.

If the pressure drops significantly after you start the engine, then either you pump is bad, the fuel pressure regulator is bad, or the fuel filter is clogged.

This is only a guess, as I can't diagnose this from here. But if you need more help, just ask.
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Saturday, September 18th, 2010 AT 5:55 AM

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