Replaced wiring harness on 97 merc tracer. everyting works except fuel pump
How to
Hot Wire Your Fuel Pump With a Relay in the Trunk
Terry Littleton - t[email protected]
You Will Need
Get 15 ft 10 gauge wire, 3 ft 14 gauge wire, and a Bosch 4 or 5
prong 30 amp relay. Any place that installs car alarms should have a Bosch
relay. Get a heavy 10/12 gauge wire 30 amp fuse holder. They can be found at
auto parts stores and come in the old glass or new plastic spade type fuses.
Make sure it is heavy wire and not like most that use like 14/16 gauge wire. You
will need 2-10 gauge butt connectors, 1-10 to 16 gauge butt connector, 2-10
gauge female spade connectors, 2-14 gauge female spade connectors, 1-10 gauge
and 1-14 gauge ring connector. Soldering gun, wire
protector.
Procedure
gauge fuse wire and attach that to the post at the rear of the alternator. Run
it over to the front of the drivers side valve cover and attach to a piece of
ten gauge wire that you will run to the back of the car. I put mine inside the
car and it was actually easier.
wires go through the firewall. I routed it over behind the emer brake pedal,
down behind that kick panel, took off the sill plate and put it inside the
plastic wire protector (it does come open, just a pain to figure it out). Take
out back seat and run it from sill up to opening that goes into the trunk. There
are other wires that do the same thing, just follow them. Bring wire down to the
hinge support. There is already a hole right there to put a bolt and nut through
to mount the relay. I had a radioshack relay but it broke so I got a
Bosch
and it seems a lot sturdier. Good choice.
trunk floor. The copper colored wire is the one to attach the trigger wire to.
It looks like bare copper wire but is actually coated. The coating is so hard, a
regular scotch lock wouldn\'t make contack on mine, so I cut out a half inch
section of the insulation and soldered the trigger wire (a small piece of 14
gauge from the relay prong 86) to there. I wrapped it in tape and put corrugated
wire guard over it.
prong 85) can go to the bolt hole you use to mount it to the hinge support. Just
clean off the paint first. Then hook up the 10 gauge wire from the alternator to
post 30 on the relay. The remaining prong on a 4 prong relay is the "Power Out"
that will feed the alternator voltage to the pump(s). If you have a 5 prong
relay the two remaining prongs should be labeled 87 and 87a. One is the "Power
Out" when relay is energized, the other supplies power when the relay is not
energized. Use a test light to determine.
(when energized) from the relay through the rear of the trunk to the fuel pump.
Notice the plastic cover over the BIG rubber grommet that takes all those other
wires from the trunk out under the back of the car? Forget about getting your
new ten gauge wire through there. Just drill a hole big enough to run the wire
through covered with some corrugated protector. I put mine right next to the
rubber plug. Then run the ten gauge wire to the pump.
Pink-Fuel Level Sender, and Brown/White Stripe-Fuel Pump motor. Cut the
Brown/White stripe wire after the connector on the fuel pump side and attach the
new ten gauge wire. Leave enough to reconnect stock later if desired. Put a butt
connector on the old cut wire so it doesn\'t short on anything. I wire tied stuff
up neat and used wire protector. If you have an external pump, you can run
another piece of 10 gauge to it for power from where it splices into the
original pump wire.
drivers valve cover and along the back edge of it under the EGR tubing in wire
protector and splices into the other fuse wire from the
alternator.
prime. The only problem I had was in the connection of the trigger wire to that
copper colored wire in the trunk like I mentioned above.
Hope this isn\'t confusing. I did it this way to keep things neat
in the engine compartment.
SOURCE: 99 Crown Victoria fuel pump replacement
Use lots of wd40 on tank strap bolts. If they bigin to bind tighten them up and losen again to get rust out of threads. If you remove the straps, why not remove the fill neck and lower tank? Much easier to work that way!!!
SOURCE: 94 dodge ram 1500 5.2 replaced fuel pump still no
U NEED TO CHECK THE FUEL PUMP AND AURO SHUT DOWN RELAY.THEY ARE IN THE UNDERHOOD FUES & RELAY CENTER.U CAN SWITCH THEM 1 AT A TIME WITH A/C RELAY.IF THAT DOES NOT WORK U MAY HAVE A PROBLEM WITH THE PCM
SOURCE: 1996 f150 fuel pump
Hello;
You may have a break in the wire inside the tank to the fuel pump. I have seen the wires disconnect as the pump is installed.
Rich
RPM Northwest
SOURCE: 92 toyota celica fuel pump not workin
try fuel pump relay first before pump look for fuses blown find the relay let someone cut key on & off while u r touching it if it clicks relay is good
SOURCE: fuel pump on 1994 caprice not pumping fuel. its a
I've run into new pumps that didn't work. If there is power at the pump and it is not pumping, then the pump should be replaced, again (under warranty).
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