1984 Cadillac Deville wont stay running

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

8 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check the fuel pressure and comeback with the readings we start here

Was this

answer

helpful?

Yes

Thursday, July 2nd, 2009 AT 8:00 PM

ANDREW_SCAMP

MEMBER
6 POSTS

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

SPONSORED LINKS

Was this

answer

helpful?

Yes

Sunday, July 5th, 2009 AT 12:04 AM

ANDREW_SCAMP

MEMBER
6 POSTS

Throttle body injection

Was this

answer

helpful?

Yes

Monday, July 6th, 2009 AT 1:43 AM

RASMATAZ

MECHANIC
75,992 POSTS

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-

Was this

answer

helpful?

Yes

Monday, July 6th, 2009 AT 4:28 PM

ANDREW_SCAMP

MEMBER
6 POSTS

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?

Was this

answer

helpful?

Yes

-1

Tuesday, July 7th, 2009 AT 1:12 AM