1982 Cadillac El Dorado has spark but no fuel pressure

Tiny
DRTYBRTY
  • 1982 CADILLAC EL DORADO
  • 18,000 MILES

FUEL PUMP ONLY RUNS WHEN I PUT A JUMPER WIRE WERE THE FUEL PUMP RELAY BELONGS. ALSO MY CHK ENG LIGHT DOES NOT ILLUMINATE WITH IGN KEY ON BUT WILL TURN ON WITH JUMPER WIRE IN THE ALDL CONNECTOR PINS A D

Do you
have the same problem?
Yes
No
Tuesday, February 7th, 2012 AT 10:39 AM

4 Replies

Tiny
RASMATAZ
  • MEMBER

Computer might not be grounding the F/P relay-

Eldorado (1981-88) Enter Diagnostic Mode By Pressing OFF & WARMER Buttons On Instrument Panel

Trying to find out what's pin D here unable to get it-

Yours looks like this

Was this
answer
helpful?
Yes
No
Tuesday, February 7th, 2012 AT 11:04 AM
Tiny
WRENCHTECH
  • EXPERT
  • 20,566 POSTS

I would test all your fuses with a test light before going too far.

Was this
answer
helpful?
Yes
No
Tuesday, February 7th, 2012 AT 11:07 AM
Tiny
CADIEMAN
  • MEMBER

Check the codes like raz said. Also lower the r/side lower dash panel and their is a fuse and relay panel under the glove box. Check the 20 amp fuel pump fuse in that panel. Check with a meter or test light for voltage on the fuse. Youll need to check the bulb connections the same way 1 side ground and 1 side 12v
stop jumping things unless you want a fire on you hands.

Was this
answer
helpful?
Yes
No
Tuesday, February 7th, 2012 AT 11:22 PM
Tiny
WRENCHTECH
  • EXPERT
  • 20,566 POSTS

If you aren't getting a check engine light when the key is turned you need to resolve that issue first which is why I said to check the fuses first.

Was this
answer
helpful?
Yes
No
Tuesday, February 7th, 2012 AT 11:30 PM

Please login or register to post a reply.

Other Fuel System Pump Pressure Questions