Installing Walbro fuel pump tomorrow. Any pointers??
Instructor
Joined: Nov 2000
Posts: 185
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From: Finland
Re: Installing Walbro fuel pump tomorrow. Any pointers?? (Boo383)
Hello Boo383
Its very easy, just plug and play. I had problems before with the fuel pressure, but after I installed the Walbro 340 my fuel pressure is more stable. But the most improvements are under boost. The pressure will now hold and rise under boost up to 12psi. Before I run 12,02 and after I installed the 340 I run 11,72.
regards
Tomas
[Modified by Tomas, 1:55 AM 10/3/2002]
Its very easy, just plug and play. I had problems before with the fuel pressure, but after I installed the Walbro 340 my fuel pressure is more stable. But the most improvements are under boost. The pressure will now hold and rise under boost up to 12psi. Before I run 12,02 and after I installed the 340 I run 11,72.
regards
Tomas
[Modified by Tomas, 1:55 AM 10/3/2002]
Racer
Joined: Jan 2004
Posts: 261
Likes: 0
From: Belgium WI
Help! I am installing the racetronix kit. Got everything but now I am installing the pump. I have a 84 and can't figure out how to hook it up. The new pump comes with a harness that has a black and a white wire with spade connectors. The white wire is long enough to go to the connection on the filler flange, I believe it is positive. My 84 has a capacitor inline with the positive wire. Should I leave the capacitor inline and cut/splice new harness? I thought everything was plug & play. Also, the new black wire on the harness has two wire connected to it. One has a spade connector the other has a black plug type connector that I can't figure out what it goes to. Hopefully someone can give me some clues!!
Racer
Joined: Jan 2004
Posts: 261
Likes: 0
From: Belgium WI
I am into the pump change on my 84. Above the old pump is a thick piece of rubber with two clamps on it, does not look like standard fuel line. Might be 3/8 but really thick. Anyway, mine is all cracked and peeling. Is this something special that a dealer has? Or can I just use some thinner 3/8 or whatever matches up?
Racer
Joined: Jan 2004
Posts: 261
Likes: 0
From: Belgium WI
I am installing the racetronix kit. Got everything but now I am installing the pump. I have a 84 and can't figure out how to hook it up. The new pump comes with a harness that has a black and a white wire with spade connectors. The white wire is long enough to go to the connection on the filler flange, I believe it is positive. My 84 has a capacitor inline with the positive wire. Should I leave the capacitor inline and cut/splice new harness? I thought everything was plug & play. Also, the new black wire on the harness has two wire connected to it. One has a spade connector the other has a black plug type connector that I can't figure out what it goes to. Hopefully you can give me some clues!!
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Supporting Vendor
Joined: Dec 2001
Posts: 1,573
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From: A dealer near you.
Originally Posted by vsocks
I am installing the racetronix kit. Got everything but now I am installing the pump. I have a 84 and can't figure out how to hook it up. The new pump comes with a harness that has a black and a white wire with spade connectors. The white wire is long enough to go to the connection on the filler flange, I believe it is positive. My 84 has a capacitor inline with the positive wire. Should I leave the capacitor inline and cut/splice new harness? I thought everything was plug & play. Also, the new black wire on the harness has two wire connected to it. One has a spade connector the other has a black plug type connector that I can't figure out what it goes to. Hopefully you can give me some clues!!
Make sure you remove the rust from around the inner edge of the sending unit so that the new gasket and o-rings can seal properly.
Last edited by Racetronix; Sep 18, 2004 at 11:40 PM.
Supporting Vendor
Joined: Dec 2001
Posts: 1,573
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From: A dealer near you.
There is a slight variation to this on some early '94s.
The ground wire will have a ring terminal on it which hooks up to the pump. In this case a nylon butt connector (not vinyl) can be used to splice into the Racetronix harness. The ring terminal is removed from the factory ground wire and the end of the wire stripped. This can be coupled with the Racetronix harness by removing the small female terminal that would be normally inserted into the connector using the butt connector. Unfortunately there is no true way to make this rare variation of the in-tank wiring fully PnP. You can also opt just to use the clamp and ground terminal on the Racetronix harness and leave the factory ground out of the picture be cutting it off beside the capacitor.
The ground wire will have a ring terminal on it which hooks up to the pump. In this case a nylon butt connector (not vinyl) can be used to splice into the Racetronix harness. The ring terminal is removed from the factory ground wire and the end of the wire stripped. This can be coupled with the Racetronix harness by removing the small female terminal that would be normally inserted into the connector using the butt connector. Unfortunately there is no true way to make this rare variation of the in-tank wiring fully PnP. You can also opt just to use the clamp and ground terminal on the Racetronix harness and leave the factory ground out of the picture be cutting it off beside the capacitor.
Racer
Joined: Jan 2004
Posts: 261
Likes: 0
From: Belgium WI
ok Racetronix, thanks for the help! I have it all figured out except for the blck/ground connections on the new in tank harness. I see that the spade connector is a ground and goes to the gera clamp on the pump spine. I am still confused about the other connector and where it goes. I also am still looking to see how to get the factory positive wire off the connector so I can slide the new white wire/pos on it.
Racer
Joined: Jan 2004
Posts: 261
Likes: 0
From: Belgium WI
FINISHED! Anyway I had to use one of the butt splices for the ground wire, not the one to the gear clamp. My 84 ground had a hook or circle connector on it. I used the butt splice as opposed to abandoning it. Car fire right up! As soon as I change my serpentine belt I will test drive it. Nice quality kit and parts. You should invest in some step by step instructions to help the less intuitive like me!
Supporting Vendor
Joined: Dec 2001
Posts: 1,573
Likes: 31
From: A dealer near you.
Originally Posted by vsocks
FINISHED! Anyway I had to use one of the butt splices for the ground wire, not the one to the gear clamp. My 84 ground had a hook or circle connector on it. I used the butt splice as opposed to abandoning it. Car fire right up! As soon as I change my serpentine belt I will test drive it. Nice quality kit and parts. You should invest in some step by step instructions to help the less intuitive like me!
You figured it out OK. The terminal you cut off on the end of the black wire would normally be inserted into the little black connector in your kit and the plugged into a factory wire. The '84 C4s do not have this as the factory pumps are of a really old design which take ring terminals. If you cut the small terminal off, stripped the wire and butt spliced it to the factory ground wire bonded to the sending unit you are fine.
We changed the kit not long ago to include this special wiring, along with a custom tank gasket, stainless bolts w/o-rings, hex key, etc. but we have not completed the manual for it yet. The ad still shows the generic in-line power adapter which all other vendors sell but does not work in many applications. There are three wiring variations in the tank. '84-'85.5, '85-'88, '89-'96.
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