Possible bad new fuel pump?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

dusterdude

Full Access Member
Joined
Oct 7, 2020
Posts
322
Reaction score
331
Location
US
First Name
mark
Truck Year
1985
Truck Model
gmc c15
Engine Size
305
I bought a new delphi pump(in tank) from rockauto recently,i am in the midst of installing it and thought i would test it first.i have my powerprobe 3 fired up and ready.i put the ground wire from the probe on both the pump body and the pump ground wire,i put power to each wire and i get nothin on both.your thoughts please
 

R Carnella

Supporting Member
Supporting Member
Joined
Sep 21, 2017
Posts
359
Reaction score
752
Location
Long island
First Name
Rich
Truck Year
1990
Truck Model
Suburban V2500
Engine Size
5.3
Sounds like you're testing correctly and the pump is toast. Good thing you checked, but it Doesn't surprise me at all. The market is so full of delfi and walbro clones that makes it hard to trust any suppliers of these...
 

dusterdude

Full Access Member
Joined
Oct 7, 2020
Posts
322
Reaction score
331
Location
US
First Name
mark
Truck Year
1985
Truck Model
gmc c15
Engine Size
305
Thanks,thats my thought too
 

dusterdude

Full Access Member
Joined
Oct 7, 2020
Posts
322
Reaction score
331
Location
US
First Name
mark
Truck Year
1985
Truck Model
gmc c15
Engine Size
305
After realizing im a dumb ass,all is well.
 

WP29P4A

Full Access Member
Joined
Jul 18, 2021
Posts
866
Reaction score
1,469
Location
Nevada
First Name
Mike
Truck Year
1987
Truck Model
Sierra Classic V1500
Engine Size
350 TBI
What happens if you run a ground and positive 12 volts from the battery, straight to the pump? Your description makes it sound like you never grounded the pump, like you just touched the probe to the ground on the pump.
 

dusterdude

Full Access Member
Joined
Oct 7, 2020
Posts
322
Reaction score
331
Location
US
First Name
mark
Truck Year
1985
Truck Model
gmc c15
Engine Size
305
I figured out the circuit breaker on the powerprobe had kicked,after reset everything worked fine.thanks for all the suggestions,we have a good crew on this site.
 

Latest posts

Forum statistics

Threads
41,851
Posts
903,500
Members
33,365
Latest member
rossivey
Top