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Fuel Pressure. I have an idea ?
- Thread starter blu3fan
- Start date
had an idea.
rode the motorcycle 8 miles to where the car is parked near my work.
I was wrong, its not the relay.
shes finally just absolutely dead.
0 psi at all.
so.
_____________
Question 1-
Where the heck is the ground ?
Im seeing posts saying the ground is inside the pump ?
also seeing its the black wire behind the spare tire cover.
I wire brushed the one behind the tire. its ground is now fine if it wasnt.
------------------
plan for tomorrow. is to pull the pump, Bring it home and test if it works.
then start Soldering the connections.
Pump is new.
and the 3rd one to fail if its dead.
but maybe this is just a wiring issue and the pump is fine.
Another thought im gonna do next. is wire a new switched 12v to the pump
Gotta isolate this issue anyway I can.
when I pull the pump I should be able to figure out + and - at least for the hardwire.
so much MEH !
rode the motorcycle 8 miles to where the car is parked near my work.
I was wrong, its not the relay.
shes finally just absolutely dead.
0 psi at all.
so.
_____________
Question 1-
Where the heck is the ground ?
Im seeing posts saying the ground is inside the pump ?
also seeing its the black wire behind the spare tire cover.
I wire brushed the one behind the tire. its ground is now fine if it wasnt.
------------------
plan for tomorrow. is to pull the pump, Bring it home and test if it works.
then start Soldering the connections.
Pump is new.
and the 3rd one to fail if its dead.
but maybe this is just a wiring issue and the pump is fine.
Another thought im gonna do next. is wire a new switched 12v to the pump
Gotta isolate this issue anyway I can.
when I pull the pump I should be able to figure out + and - at least for the hardwire.
so much MEH !
Sorry to multiple post.
But...
BAM ! Pictures and all.
maybe this will help others.
https://www.jeepforum.com/forum/f12/fuel-pump-ground-location-1285393/
But...
BAM ! Pictures and all.
maybe this will help others.
https://www.jeepforum.com/forum/f12/fuel-pump-ground-location-1285393/
so ive been thinking about this.
Doing about 30 odd pages of google searches later.
I am thinking my issue exists on the fuel pump connecting wires.
heres my thought process.
They are tarnished.
and every time I pulled the pump. I scraped them removing them.
Can I solder these connections ?
what is the correct process ?
Doing about 30 odd pages of google searches later.
I am thinking my issue exists on the fuel pump connecting wires.
heres my thought process.
They are tarnished.
and every time I pulled the pump. I scraped them removing them.
Can I solder these connections ?
what is the correct process ?
- Location
- In a strange land
This sounds like a bad idea to me.
Exactly which connections are you thinking of soldering? The connections inside the tank (i.e. those which are integral to the pump assembly)? Or the connections outside the tank (i.e. the pump assembly to the vehicle harness)?
If the former I suppose there is not too much risk as a replacement pump assembly module would return things to normal. If the latter, well, I can imagine the next owner's curses.
I would be more inclined to buy an aerosol can of electrical contact cleaner.
Exactly which connections are you thinking of soldering? The connections inside the tank (i.e. those which are integral to the pump assembly)? Or the connections outside the tank (i.e. the pump assembly to the vehicle harness)?
If the former I suppose there is not too much risk as a replacement pump assembly module would return things to normal. If the latter, well, I can imagine the next owner's curses.
I would be more inclined to buy an aerosol can of electrical contact cleaner.
Yeah so I was thinking about soldering the two wires that feed + and - to the pump. inside the tank. the ones inside that white clip thing.
Im readingsome things on the other jeep forums about this.
half the people seemed to think that would be fine.
all the others said fire hazard.
any confirmation on that ?
Oh. I forgot to post it.
hardwired 12V and ground from battery did not work. this is why I sm thinking fuel pump wires.
this is also the 3rd bosch pump I have put in the car in 6months.
maybe it just failed ? but im getting doubtful.
Im headed over to the car today to pull the pump out. bring it home and bench test it.
hardwired 12V and ground from battery did not work. this is why I sm thinking fuel pump wires.
this is also the 3rd bosch pump I have put in the car in 6months.
maybe it just failed ? but im getting doubtful.
Im headed over to the car today to pull the pump out. bring it home and bench test it.
Brought the pump home.
This piece of !@$* Works just fine outside the car..
----------------------------------------------------------
I soldered new + and - wire to the outside of the harness.
wire brushed every connection inside the pump.
----------------------------------------------------------
time to go back over and retest EVERYTHING.
so much MEH ...
This piece of !@$* Works just fine outside the car..
----------------------------------------------------------
I soldered new + and - wire to the outside of the harness.
wire brushed every connection inside the pump.
----------------------------------------------------------
time to go back over and retest EVERYTHING.
so much MEH ...
trippled
NAXJA Forum User
- Location
- colorado springs, co
Why not just buy a new fuel pump hanger? Have you tested for power and ground at the connector? If it's out you could also test for power and ground at the fuel pump. Start isolating circuits and move from there. No need to try and rig up a random circuit. Use a test light or a sealed beam headlight to load the circuit.
so. she keeps working then not working.
I suspect when I removed the fuel pump I dislodged the wiring. allowing it to work again.
I now have a + spliced and soldered to the outside of the harness. and ground.
either way. tomorrow when I go back over before work.
Im fixing this thing...
all the way home no issues.
60psi on the rail. NO LONGER DROPS TO 20 at 3k rpm like it always had** and I considered normal !!!! HA !! How foolish I have been.
she has never ran this well. EVER.
my stroker feels like a monster..... I can literally burn out all 4 tires from a stop. LOL
I wondered why I always felt like she was running lean.
gonna hook a relay to the dash. and perm wire this in.
thanks guys for the help.
60psi on the rail. NO LONGER DROPS TO 20 at 3k rpm like it always had** and I considered normal !!!! HA !! How foolish I have been.
she has never ran this well. EVER.
my stroker feels like a monster..... I can literally burn out all 4 tires from a stop. LOL
I wondered why I always felt like she was running lean.
gonna hook a relay to the dash. and perm wire this in.
thanks guys for the help.
