fuel pump not primming... starter is cranking... but no fuel going in... main relay perhaps????

TIA

 

ok. so far, i've replaced the main relay... still no fuel 'buzz'. switched out fuel pumps... still no fuel 'buzz' all fuses are good... there's spark.... help? there are no codes.

when i say 'buzz' i'm talking about when you put the key in position II and you hear the fuel pump 'prime' up and then the check engine light disappears.

 

dude, check your underhood fuses. Twice.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by daklown &raquo;</TD></TR><TR><TD CLASS="quote">dude, check your underhood fuses. Twice.</TD></TR></TABLE>

thanks for the tip man, but all the fuses are still good under there. the two main ones to check there are the ECU fuse and the BACKUP fuse. both are in good condition.

fried ecu perhaps? if so, would it throw a code? any suggestions please!

 

do you have any voltage at the pump (on the wire) when you turn the ignition on? check that first. Basic trouble shooting.
If you don't have voltage there jump back to the fuse holder, keep going back until either -A- you find voltage or -B- you get to the battery.....
You know where it's bad (pump) now find where it's good...

 

if you put a paper clip betweeen the two harnesses up in the dash (blue i think) then you shoudl be able to pull the code. I could be wrong.

i did my swap and i couldnt figure out why it wouldnt turn over for like 2 days. ended up being a fuse.

also theres a ground near the Tstat that a lot of people miss. a LOT. try that one.

 

check out this tread

https://honda-tech.com/zerothread?id=698855

i had a similar problem and it ending up being the ECU. it will throw a code 0 i believe. good luck

 

aaaaash!!! i'm checking the ECU tomorrow... my car is stuck at my cousins house... i'll let you know if i find anything...

 

one question, if you have a really really old fuel filter, like with 180k on it, would it blocks the pump also and cause it not primming??

my pump is crazy sometimes, sometimes it doesn't do its job, no primming sound
and then when i pop the hood, hit the fuse box and then close the hood back up and try to start the car again, it'll starts. This only happens like 1 out of 20 times.

anything you guys can think of??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by intezn &raquo;</TD></TR><TR><TD CLASS="quote">

my pump is crazy sometimes, sometimes it doesn't do its job, no primming sound
and then when i pop the hood, hit the fuse box and then close the hood back up and try to start the car again, it'll starts. This only happens like 1 out of 20 times.

anything you guys can think of??</TD></TR></TABLE>

loose connection!

 

i had the same problem when i installed my fuel cut off switch, the damn thing wouldn't prim up. what you need to do is to go through ALL of your fuses under the steering column. thats what i did and found a 10fuse that was just burnt i replaced it, and everything was fine. i think it said ARG or something like that on it, i never checke it the first time cause i thought it didn't have to do with anything and didn't know what it stood for. hope that helps you. keep us posted.

 

well, the ecu looks fine.. swapped it as well, still no primming... i guess im gonna quadruple-check my fuses once more... this is really buggin me... gonna do a voltage test as well.

 

ecu... OK!
main relay... OK!
coil and ignitor... OK!
spark... OK!
timing belt... OK!
fuel pump... OK!
fuses... OK!
injectors.. OK!

but still no fuel going into the engine... i'm checking out the wire harness now... this is gonna take some time...

 

check to see if there is actually power AT THE PUMP.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ntogethernow &raquo;</TD></TR><TR><TD CLASS="quote"> thats what i did and found a 10fuse that was just burnt i replaced it, and everything was fine. i think it said ARG or something like that </TD></TR></TABLE>

Actually it's the ACG fuse and yes it will give off the same symptoms as a bad fuel pump, main relay, ECU fuse, etc.

So have you taken a test light or oulled EVERY fuse yet?

Check the ACG fuse - it's in the under dash fuse box.

 

Do Hondas have a fuel pump jumper on the diagnostic port? That may at least get you home if it is really just your fuel pump.

 

it really didn't take as long as i thought it would. got my test light out... checked the wires at the pump and bam! one of the wires was giving off dim light.... it had to be it.. so i got some wire, followed it with the bad wire was, and sure enough, the pump primmed.

so now im thinking... how does a wire fry like that? sheesh... well, i guess just call all my guess and check work (fuel pump/main relay) as preventive maintenance...

oh and btw... the fuses were all good... you would think that the fuse should blow out.... weak wiring to the fuel pump i guess...

thanks everyone for all the info and advice!

 

i had a very similar problem it was just the ground on my Thermo-housing had came loose connected that and it started right up

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenMatic &raquo;</TD></TR><TR><TD CLASS="quote">it really didn't take as long as i thought it would. got my test light out... checked the wires at the pump and bam! one of the wires was giving off dim light.... it had to be it.. so i got some wire, followed it with the bad wire was, and sure enough, the pump primmed.

so now im thinking... how does a wire fry like that? sheesh... well, i guess just call all my guess and check work (fuel pump/main relay) as preventive maintenance...

oh and btw... the fuses were all good... you would think that the fuse should blow out.... weak wiring to the fuel pump i guess...

thanks everyone for all the info and advice!</TD></TR></TABLE>

i had a hunch it was that..

 

i had the same problem in my old accord..the line just went bad..it was a perfect time to wire a cut-off switch..maybe you u should do the same if you havent done so already

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">

Actually it's the ACG fuse and yes it will give off the same symptoms as a bad fuel pump, main relay, ECU fuse, etc.

So have you taken a test light or oulled EVERY fuse yet?

Check the ACG fuse - it's in the under dash fuse box.</TD></TR></TABLE>

not to hi-jack this thread or anything but what does the ACG fuse do anyway? and what does it stand for? glad you figured out your problem DenMatic

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenMatic &raquo;</TD></TR><TR><TD CLASS="quote">it really didn't take as long as i thought it would. got my test light out... checked the wires at the pump and bam! one of the wires was giving off dim light.... it had to be it.. so i got some wire, followed it with the bad wire was, and sure enough, the pump primmed.

so now im thinking... how does a wire fry like that? sheesh... well, i guess just call all my guess and check work (fuel pump/main relay) as preventive maintenance...

oh and btw... the fuses were all good... you would think that the fuse should blow out.... weak wiring to the fuel pump i guess...

thanks everyone for all the info and advice!</TD></TR></TABLE>


The wire could have rubbed somewhere, causing a short, not a direct short, but enough resistance to cause the problem.