DIY Main PGMFI Relay repair

[CRXer]

Geez,I read that wrong didn't I...
Ok,so
- 15A switch mounted and hidden.
- Then run a + and - cable from the PGMFI to the switch.That's it?

I just have to find which wire is + and -
)n my 96Ek1 Civic the PGMFI is behind the glovebox in the corner

if u run + & - to the switch u will get dead short circuit when u turn on switch.

just cut the power feed to the pump,ie yellow/green? wire wherever u can find it going to the rear of your car under the back seat,& attach the 2 cut ends to the switch,then it just connects this wire back together when u operate the switch.

[CRXer]

just in case he needs to know too, the other 4 wires at the pump are (and i don't know what they do as none of them affected the pump or sender/gauge when cutting)
- Black
- Black/White
- Yellow
- Green/Red

i think it goes something like this ron

black-ground for pump or sender
black/white-as above but viceversa
yellow-sender
green/red-low fuel warning light.

pump should have died when u cut one of the black wires,but because it grounds to the fuel pump bracket also,it was prob grounded somewhere else as well thru the fuel lines or tank contact to the chassis somewhere.

[beeza]

if u run + & - to the switch u will get dead short circuit when u turn on switch.

just cut the power feed to the pump,ie yellow/green? wire wherever u can find it going to the rear of your car under the back seat,& attach the 2 cut ends to the switch,then it just connects this wire back together when u operate the switch.

Gotcha.So no need for a relay,just cut the power wire and put a switch in there

[CRXer]

Gotcha.So no need for a relay,just cut the power wire and put a switch in there

15A+ switch direct or small discreet switch operating a relay cut into the pump power wire.

[beeza]

Thanks mate!

[anak BALAP]

Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!


Aim: To get the car running again
Required: 10mm socket, wratchet to suit, solder, solering iron, flat head screw driver.
Steps: not many


so your car starts fine, but after some driving it will stall and wont restart, or restart then stall again, this can be symptoms of the Main PGMFI Relay at fault, as well as other things like coil, ICM, but since the main relay is so easy to fix, why not start there.

A good sign of the relay at fault is you might not hear the fuel pump prime for 5 seconds when you 1st turn on the IGN, ( it can still prime if the relay is faulty )
also low or no fuel pressure.

STEP 1: Locate the main PGMFI relay, you will find it under the dash, commonly the RHS but dont be fooled, lots of modles have them on the LHS, CRV for example you have to remove the glove box. the relay looks like this





STEP 2: remove the relay, there will be one bolt with a 10mm head. unplug the wiring harness.

Step 3: open the main relay, use a flat head screw driver to pry it open, do this evenly from both sides.






Step 4: look for the dry solder joint, if you cant see it just reflow the solder on all the joins, add solder but not to much, allow the solder to melt and bond to the components. reflow the solder on every join, only takes 5 minutes.





STEP 5: reasmeble the relay in revers to disasembly and refit to the vehicle.

thats it !!!

if your unsure of the Main PGMFI Relay location for your vehicle, just reply and im sure someone or myself will tell you.

if you have fixed your relay and still have problems of not starting, start looking at your disributor, eg ICM, Coil. also the ignition switch


Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!

for some reason the pics on my browser arent showing...

[zco]

what can benefit from this, if the car is currently starting properly.. and i resolder all the joints ?

will it start "better" in some way ? loll

[ECU-MAN]

no,
its just when your having starting issues

[Phamiii]

where is the relay located in the 94 dc2 vtir??

[geeang]

where is the relay located in the 94 dc2 vtir??

It's behind the driver's side kick panel below the the hood latch release.

[VT3C]

having issues with my fuel priming etc for a couple of YEARS and I always thought it was my imobilizer playing up.. after it got REALLY bad and I couldnt start my car the other week, Kyle (KB) suggested doing THIS and it worked - been perfect ever since goddammitt !!

[Phamiii]

does anyone kno how much a new main relay cost?
for dc2 vtir