Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Albums Search Today's Posts Mark Forums Read FAQ
Search
C4 Tech/Performance
L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Sponsored by
J&D Corvette

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C6 Parts & Accessories
C5 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 06-16-2007, 12:44 PM   #1
Baksu
Junior Member
 
Member Since: Jun 2007
Default 1986 vette, no power to fuel pump relay,

just bought an 86 vette basket case, I bought it for the drive line, their is no power at the fuel pump relay, fuses ar good, but there are 2 wires spliced at the computer, can anyone helpout with a wiring diagram, with out having to buy a complete manual, any help thanks Mark
Baksu is offline   Reply With Quote
Old 06-16-2007, 03:01 PM   #2
jfb
CF Senior Member
 
Member Since: Mar 2001
Location: Cincinnati, Oh USA
Default

Which wires? What color? What pins? Relay coil or relay contact power? If you want good help, you have to supply good information.
The fuel pump relay is powered by two places, one from the ECM (grn/wh), supplies +12v to the relay coil for 2 seconds when you turn on the ignition. The second supplies +12v to the relay contacts (orange).
jfb is offline   Reply With Quote
Old 06-16-2007, 03:02 PM   #3
bogus
CF Senior Member
 
Member Since: Aug 2000
Location: San Pedro CA
Send a message via Yahoo to bogus
Default

Mark -

Trying to fix electrical gremlins on a C4 without the aide of the Helm Factory Service Manual is damned near impossible.

Do yourself a favour - unass $100 and buy the ****ing manual.
bogus is offline   Reply With Quote
Old 06-16-2007, 05:32 PM   #4
CFI-EFI
CF Senior Member
 
CFI-EFI's Avatar
 
Member Since: Sep 2000
Location: The Top of Utah
Default

Quote:
Originally Posted by jfb
The fuel pump relay is powered by two places, one from the ECM (grn/wh), supplies +12v to the relay coil for 2 seconds when you turn on the ignition.
And also when cranking and running.

Baksu, When are you checking for power at the relay? On what relay terminals.

RACE ON!!!
CFI-EFI is offline   Reply With Quote
Old 06-16-2007, 05:34 PM   #5
CentralCoaster
CF Senior Member
 
CentralCoaster's Avatar
 
Member Since: May 2002
Location: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Default

Not to sound dumb, but are you checking the right relay? On 4+3 cars the fuel pump relay is right behind the overdrive relay, and is the exact same p/n.
CentralCoaster is offline   Reply With Quote
Old 06-16-2007, 08:37 PM   #6
AGENT 86
CF Senior Member
 
AGENT 86's Avatar
 
Member Since: Jan 2003
Location: Summerland B.C. Canada
Default

http://members.shaw.ca/agent86/Fuel%...elivery-8A.pdf
http://members.shaw.ca/corvette86/En...agram%2086.pdf
http://members.shaw.ca/corvette86/Fu...mDiagnosis.pdf
AGENT 86 is offline   Reply With Quote
Old 06-16-2007, 08:37 PM
 
Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Tech/Performance
Reload this Page 1986 vette, no power to fuel pump relay,
 
 
 
Reply

Tags
1984, 1986, 86, corcette, corvette, fuel, fuse, good, located, location, power, pump, relay, whereis1986corvettefuelpumprelaylocated, wiring


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 12:52 AM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2