1991 Oldsmobile 98 No power to fuel pump

1991 OLDSMOBILE 98
130,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
JASONTUCKER
  • MEMBER
  • 2 POSTS
I checked power at the relay and have power at contact #1 (switchable power from fuse thru relay to pump) but no power from the ecu to pin #5 (the power the throws the switch in the relay to close the circuit). All the contacts appear ok. The car cranks and has spark. Thanks.
Jan 30, 2010 at 8:04 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Sounds like the computer controlled circuit of the fuel pump relay is defective
Jan 30, 2010 at 9:13 PM
Avatar
JASONTUCKER
  • MEMBER
  • 2 POSTS
[quote:f3fba36870="rasmataz"]Sounds like the computer controlled circuit of the fuel pump relay is defective[/quote:f3fba36870]

Yeah, that's what I was afraid of. I'm going to check the remaining inputs to the ECU tomorrow and the wiring/contacts for that circuit.

Thanks for your help. Working on Audis, VWs and Porsches all day has made my brain soft on American cars.
Feb 1, 2010 at 12:18 AM
Advertisement