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Topic: Fuel Pump Relay Location???

in Forum: C3 Fuel, Emission Control, and Exhaust Systems


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Fuel Pump Relay Location??? (1/13)
 3/10/10 10:15am
dans1yy07Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition


Joined: 1/2/2003
Posts: 44

Where is the fuel pump relay located? Have checked all fuses and connections. Vette still won't start. Tested feul pump by appling 12 volts to it and it sounded like it was working. Did find the antenna relay. But not the fuel pump relay.

Dan

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Fuel Pump Relay Location??? (2/13)
 3/11/10 4:17am
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion


Joined: 8/22/2006
Posts: 1094

Fuel pump relay is in the battery box.  The fuse for the relay is in the battery box as well, its an inline fuse, I think is a 20 amp.  If all else fails in finding your problem, check under the shifter console, the anti-theft relay is located just forward of the shifter with the connector facing the drivers side.  Make sure that connector is tight, it will stop the starter circutits from engaging as well.  Long shot but worth a try.   Have you used a meter to see if you are getting power to the fuel pump connections when the key is turned.  Probably take two people for that one, ont to turn the key and another to watch the meter. Crossfire19822010-03-11 05:22:31
Fuel Pump Relay Location??? (3/13)
 3/11/10 4:49am
dans1yy07Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition


Joined: 1/2/2003
Posts: 44

Is it in the side with the battery or in the side next to the battery. Yesterday i took out a relay that I thought was the fuel pump relay only to find out it was the antenna relay.
Dan
Fuel Pump Relay Location??? (4/13)
 3/11/10 1:34pm
DaveMLifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.


Joined: 1/27/2004
Posts: 2553

IF I REMEMBER CORRECTLY, THE FUEL PUMP RELAY IS IN THE PASS. SIDE COMPARTMENT.
DAVE


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Fuel Pump Relay Location??? (5/13)
 3/11/10 3:21pm
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion


Joined: 8/22/2006
Posts: 1094

Dan, the good news is that it is right behind the drivers seat.  The BAD NEWS is that the sadist that designed these cars decided to put it BEHIND the mounting plate for the ECM.  This pic shows the location.  There is nothing like working with your head in the battery compartment and using a mirror to see bolts you cant see otherwise and can barely reach.  You have probably already done this but removing the entire drivers seat makes this alot easier.  A towel over the door threshold keeps from scratching anything.
Crossfire19822010-03-11 16:22:42
Fuel Pump Relay Location??? (6/13)
 3/11/10 6:01pm
dans1yy07Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition


Joined: 1/2/2003
Posts: 44

After rechecking he battery box area again I did find the fuel relay. Just as a precaution I will replace the relay.
Also removed the hyperchip out of ecm. put old chip back in.  still didn't start but will get new relay and re check.
How do you get pics in your posts. and on your profile.
 
Love working on my vette.but would love to know I am going in the right direction.
 
P.S.  Can't Wait to start crusing ........CryCryWits Endlol
Fuel Pump Relay Location??? (7/13)
 3/12/10 1:05pm
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion


Joined: 8/22/2006
Posts: 1094

There is a post somewhere by Adam that tells how to do the signature pics, let me see if I can find it or if anyone else locates it, please post.
EDIT:  Here it is  I have no idea why it is not showing as a link.  You may have to copy and paste it into your browser address bar.
https://www.c3vr.com/forum/faqs-tips-read-before-asking-your-questin_topic71284.html?KW=settings
Crossfire19822010-03-12 14:15:54
Fuel Pump Relay Location??? (8/13)
 3/12/10 6:00pm
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!


Joined: 5/21/2008
Posts: 1962

Did Dave put that relay there??  That was dumb of him !!

Dan


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Fuel Pump Relay Location??? (9/13)
 3/22/10 10:29pm
dans1yy07Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition


Joined: 1/2/2003
Posts: 44

recieved relaytoday but was wrong relay or is there another spot that the relay could be located. The one on the back of the puter was black in color and connectors are different.

Dan

Fuel Pump Relay Location??? (10/13)
 3/23/10 3:45am
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion


Joined: 8/22/2006
Posts: 1094


This is what you should find in that area: ECM, Electronic Spark Control, Fuel pump relay, E-Cell timer (long thin tan object) and the inline fuse for the relay. (Photo courtesy of Joel Adams)
Crossfire19822010-03-23 04:48:35
Fuel Pump Relay Location??? (11/13)
 3/23/10 7:34am
dans1yy07Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition


Joined: 1/2/2003
Posts: 44

The black box is the spark control box?

Dan

Fuel Pump Relay Location??? (12/13)
 3/23/10 9:10am
dans1yy07Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition


Joined: 1/2/2003
Posts: 44

Found relay under drivers side battery box tucked up in corner.  Put it in and vette runs will put  new fuel pump in  next.
 Dan
Fuel Pump Relay Location??? (13/13)
 3/23/10 9:10am
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20170

The ECM is on the far left in the pic.
The FP relay is in the right hand.
The ESC is the bottom "box".
The E-cell timer is in the center of the pic, between the two hands.
The Fuse/holder is on top of the left hand.

The E-cell timer is basically something that turns on the "Check Eng" light at a specified mileage. It's purpose is to remind the driver it is time for emissions maintenance.

Hope this helps clarify the objects in the pic.


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