[lilsweden68]

where is the fuel pump relay on a 9c1 LT1 caprice from 96

 

[Mean SS]

in the fuse box under the hood

 

[lilsweden68]

is that just the fuse or relay in the box??? which one of the relays is it....because i know there is a 15a fuse for the fuel pump....but whch one is the relay in the fuse box under the hood?

 

[Mean SS]

#17 in this dia.

 

[Mean SS]

to test the fuel pump,run a 12v power wire to the fuel pump prime connector near the fuse box.

 

[lilsweden68]

is that prime wire connector not connected to anything???....becuase on mine it looks just like in the picture. not connected at all....can i take the battery out from the red port and run power to that connector and keep the battery grounded with the black port?

 

[Mean SS]

it's not connected to anyting it's for testing only,get 12v + anywhere you can and plug it in to that connector then you should hear the fuel pump working

 

[carlrf]

I love this place. I don't currently need this information but will mark my wire for future needs. Thanks to you and all, that help us lazy butts find out things without spending hours frustrated flipping pages in a 3 volume manual. I know we should spend more time in it but..........?

 

[4DoorSS]

prime time

when I had my FP problems I used this port a lot for testing. Helps to know whether you need to drop the tank or not.

I just got a short length of wire and crimped a "blade" type connector to one end to plug into this wire. You can then touch the other end of the wire to either the pos. post on the fuse box or the battery. If the pump is good, you should hear it running in the tank.

If you ever try to run the pump from the 3 wire (12v, Ground, fuel gauge) harness back by the tank, it will only run for a couple of seconds. This is a safety feature designed to cut off the pump if there is no oil pressure at the engine. this prime lead overrides this feature and will run the pump continuously.

 

[lilsweden68]

ok thanks alot for the help

 

[lilsweden68]

Do i turn the ignition on when i apply the wire to the prime connector?? or do i leave it off?

 

[lilsweden68]

so i connected a wire from the battery to the prime connector...and i can hear the injectors....and i can hear the fuel pump...i checked the fuse and the fuse is good. could it be the relay???

 

[lilsweden68]

could it be the ignition coil that went bad when i replaved the ICM. because the connection was so bad that maybe it could have shorted out the ignition coil???