Fuel pump relay help needed, please!!
Thread Starter
Instructor
Joined: Aug 2002
Posts: 220
Likes: 0
From: Boise ID
Fuel pump relay help needed, please!!
The fuel pump on my 2000 will not activate. I have checked the fuse. I have checked the relay.
If I jumper at the relay, the fuel pump will run.
I have tested as follows:
30 = to pump
87 = No reading key off, 12V key on
86 = No reading key off, 12V key on
85 = Ground reading key off, 12V key on.
85 or 86 would need to be a ground with key on for te relay to activate, correct??
I have not been able to find a schemtic to see where 87, 86, and 85 come from.
Does anyone have any suggestions?
Thanks!!
If I jumper at the relay, the fuel pump will run.
I have tested as follows:
30 = to pump
87 = No reading key off, 12V key on
86 = No reading key off, 12V key on
85 = Ground reading key off, 12V key on.
85 or 86 would need to be a ground with key on for te relay to activate, correct??
I have not been able to find a schemtic to see where 87, 86, and 85 come from.
Does anyone have any suggestions?
Thanks!!
Tech Contributor
Joined: Jan 2007
Posts: 19,398
Likes: 1,139
From: Dyer, IN
The fuel pump on my 2000 will not activate. I have checked the fuse. I have checked the relay.
If I jumper at the relay, the fuel pump will run.
I have tested as follows:
30 = to pump
87 = No reading key off, 12V key on
86 = No reading key off, 12V key on
85 = Ground reading key off, 12V key on.
85 or 86 would need to be a ground with key on for te relay to activate, correct??
I have not been able to find a schemtic to see where 87, 86, and 85 come from.
Does anyone have any suggestions?
Thanks!!
If I jumper at the relay, the fuel pump will run.
I have tested as follows:
30 = to pump
87 = No reading key off, 12V key on
86 = No reading key off, 12V key on
85 = Ground reading key off, 12V key on.
85 or 86 would need to be a ground with key on for te relay to activate, correct??
I have not been able to find a schemtic to see where 87, 86, and 85 come from.
Does anyone have any suggestions?
Thanks!!
Thread Starter
Instructor
Joined: Aug 2002
Posts: 220
Likes: 0
From: Boise ID
Thanks so much Mike. It was G105. I took off the header to have a wide O2 put in when I started the project. I removed G105, but thought there was only one wire there not two.
Thanks Again!!
Thanks Again!!
Tech Contributor
Joined: Jan 2007
Posts: 19,398
Likes: 1,139
From: Dyer, IN
Cruising
Joined: Aug 2020
Posts: 14
Likes: 1
From: Lexington, SC
Oh, I believe you and pray that I find that ring connector hanging loose and you have supplied the solution to my problem. I didn't take that left header off myself, but I reconnected everything, that I knew of, putting it back together. I don't know how I could have missed that wire if it was hanging there, but you can bet I'll be looking for it as soon as I get it back on the lift. Do you happen to know where Splice Pack 122 is located?
I don't know if you saw my message reporting that I checked for codes last night and it was clear. No codes.
Thanks again for pointing this out to me.
I don't know if you saw my message reporting that I checked for codes last night and it was clear. No codes.
Thanks again for pointing this out to me.
Tech Contributor
Joined: Jan 2007
Posts: 19,398
Likes: 1,139
From: Dyer, IN
Oh, I believe you and pray that I find that ring connector hanging loose and you have supplied the solution to my problem. I didn't take that left header off myself, but I reconnected everything, that I knew of, putting it back together. I don't know how I could have missed that wire if it was hanging there, but you can bet I'll be looking for it as soon as I get it back on the lift. Do you happen to know where Splice Pack 122 is located?
I don't know if you saw my message reporting that I checked for codes last night and it was clear. No codes.
Thanks again for pointing this out to me.
I don't know if you saw my message reporting that I checked for codes last night and it was clear. No codes.
Thanks again for pointing this out to me.
https://www.corvetteforum.com/forums...on-needed.html
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,508
Likes: 4,000
From: Cape Coral, Florida
Yep, SP122 is located underneath the battery tray. See post #13 in the link below:
https://www.corvetteforum.com/forums...on-needed.html
https://www.corvetteforum.com/forums...on-needed.html
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