RE: beautifuly clean 87 dx manual fuel pump problem
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/17/2007 2:47:49 PM
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Hatchit
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?
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Hatchit...87 accord DX, hatch back (no auto seat belts)2nd ower, little wear-N-tare, CLEAN AS NEW(in 1987)
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/22/2007 6:31:56 PM
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Hatchit
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would a bad alternator effect my cars abillity to pump fuel???? been through every possable test... and im about to just sell it...
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Hatchit...87 accord DX, hatch back (no auto seat belts)2nd ower, little wear-N-tare, CLEAN AS NEW(in 1987)
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/22/2007 7:49:14 PM
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sir_nasty
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This sounds frighteningly like the EXACT same problem I just had with my 81 civic..... for starters find out which of those 4 prongs on the fuel cutoff you need to jumper to bypass it, I think mine only had 3 prongs (and looked identical to yours) and I had to jumper the outside pair, once you've done that it eliminates the stupid relay that gave me a ton of headaches, now see if the pump pumps, remove the fuel line and check for pressure/fuel coming out that way you have a for sure certain test.... if you need to know which relays to jumper then get a few paper clips, put one in each slot and take a pair of insulated pliars or a lead wire from a volt meter works too, turn the key to the on position, and see which combination of touching the two prongs (paper clips at this point) works, remove the others and connect the two paper clips that need connected to bypass that cutoff, now make sure that each time you turn the key to the on position the pump supplies fuel, if it does hook the fuel line back up and try to start it.... The really stupid part about all of this is that I took off the distributor cap and cleaned the contacts, then cleaned the rotor (even though I was getting spark) and it all started to work.... This is scary dejavue...
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1981 Civic Station Wagon - ROhnda (Really Old Honda)
1981 Honda CB650 Motorcylce - WHEE What More can I say?
2000 Lexus RX 300 - Oooh baby my wife let me drive it once!!
Quote: Life''''s great but it''''s not all beer and skittles
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/22/2007 7:51:51 PM
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sir_nasty
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and forget the alternator that's not your issue at this point.... if the battery is weak it will cause you problems though.... the fuel pump should pump/pressurize when the key is on the on position whether the car is running or not once the lines pressurize you won't hear it kick on until you try to start/run the car, that's why I advise removing the fuel line from the carb so you have a visual representation of fuel pumping or not....
My car wouldn't pump when I turned the car over, then I'd stop trying to turn it over and it'd spit out a little bit of fuel but nothing in the on position....
_____________________________
1981 Civic Station Wagon - ROhnda (Really Old Honda)
1981 Honda CB650 Motorcylce - WHEE What More can I say?
2000 Lexus RX 300 - Oooh baby my wife let me drive it once!!
Quote: Life''''s great but it''''s not all beer and skittles
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/22/2007 7:55:26 PM
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sir_nasty
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here's the post I made after solving/fighting this issue.... I bet the symptoms will sound all to familiar....
http://www.hondaaccordforum.com/Can_you_diagnose_this%3F_Weird_starting_issues/m_42346/tm.htm
_____________________________
1981 Civic Station Wagon - ROhnda (Really Old Honda)
1981 Honda CB650 Motorcylce - WHEE What More can I say?
2000 Lexus RX 300 - Oooh baby my wife let me drive it once!!
Quote: Life''''s great but it''''s not all beer and skittles
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/22/2007 9:24:38 PM
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deserthonda
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Ok Hat we are going to do some basic diagnostic........( NOT GETTING FUEL )
I am going to ask some questions .
# 1 car has planty of fuel in tank ?? YES ........No fill it up ..
# 2 ,in dash fuse box fuse # 1 ,15 amp is ok, ?? YES,,
, NO replace fuse and retry
# 3 remove the connector at fuel pump.. chk for power at yellow wire and ground at black wire both have to be available when cranking the engine as if you are starting the car .......you got both power and ground ?? YES ,
,NO,, tell us which one is not available and we can go from there .. If power and ground.
# 4 remove the fuel hose coming from tank to fuel filter, get a can, put hose in can so you do not have fuel all over , have someone crank the engine ,,
is fuel available . ?? YES ..
NO,, If no fuel, remove the fuel pump, could be a bad pump, gas tank baffle broken and restricting fuel flow , plugged sock at fuel pump .remove the fuel pump and visually take a look at it and also look inside the tank for anything unusual .....
If fuel flow,, reconnect that hose,,,,,,,, remove the hose at filter going to the fuel supply tube to carb . have someone crank the engine.. is there fuel flow ?? YES ..
. NO.. totally plugged up main fuel filter at tank
if fuel flow going to pipe, reconnect hose to piping.. disconnect inlet fuel hose that goes into the underhood fuel filter, have someone crank the engine any fuel flow ?? YES ..
NO. if no fuel flow there is a blockage in the piping from tank filter to underhood filter.
if there was fuel.. reconnect the inlet hose,, disconnect the oulet hose going into carb,,
have someone crank the engine, is there fuel flow ?? YES
NO,, totally plugged up underhood fuel filter .
Again if either power or ground is lacking at fuel pump connector,stop right there and let us know . could be wiring issues or fuse box itself ,,
if you follow these step by step i guarantee you will diagnose the problem
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/25/2007 1:17:33 PM
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Hatchit
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ty guys so much im so freakin happy to have found this site.... TO SIR NASTY... my friend cam over and jumped the relay for me... and the pump ran... like it wasn't pumpimg fuel but it was on..... now if i took a 9-volt battery and put it on the line i can push fuel up to the engen..... so i kow it's not the pump.....BUT i am going to go clean the distributer cap now and see what happens.......
TO DESERTHONDA ..... i have printed your dio... and will run these test and be right back to post the findings.....
thank you guys a million
_____________________________
Hatchit...87 accord DX, hatch back (no auto seat belts)2nd ower, little wear-N-tare, CLEAN AS NEW(in 1987)
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/25/2007 1:24:04 PM
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Hatchit
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ok all your test clear out.(desert honda)... i can push thru with the 9 volt.... but still nothing when the cars on?
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Hatchit...87 accord DX, hatch back (no auto seat belts)2nd ower, little wear-N-tare, CLEAN AS NEW(in 1987)
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/25/2007 2:05:08 PM
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deserthonda
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quote:
ORIGINAL: Hatchit
ok all your test clear out.(desert honda)... i can push thru with the 9 volt.... but still nothing when the cars on?
What do you mean all the tests clear out ?? if they did, that would mean that you also have power and ground at the fuel pump connectors ?? if so, why do you need to apply another battery source to make the pump activate??? you are comtradicting yourself or i am not understanding what you said properly ..what i am getting is that .. if you need to apply another battery source , that would mean that you got either NO power or NO ground // Am i wrong ?? is there power ( 12 volts ) and ground available at the fuel pump connector??? yes or no ..
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Take a look in the DIY section before asking for help
Always Diagnose First,,, Before Replacing Parts
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/25/2007 2:37:28 PM
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Hatchit
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quote:
ORIGINAL: deserthonda
quote:
ORIGINAL: Hatchit
ok all your test clear out.(desert honda)... i can push thru with the 9 volt.... but still nothing when the cars on?
What do you mean all the tests clear out ?? if they did, that would mean that you also have power and ground at the fuel pump connectors ?? if so, why do you need to apply another battery source to make the pump activate??? you are comtradicting yourself or i am not understanding what you said properly ..what i am getting is that .. if you need to apply another battery source , that would mean that you got either NO power or NO ground // Am i wrong ?? is there power ( 12 volts ) and ground available at the fuel pump connector??? yes or no ..
power is there all the way up to the fuse box.... it cecks out all the way thru..... and what i was trying to say is that (when he cars on) it pumps nothing.... but just to check the pumps operation i used a 9 volt to see if it's a abd pump.... it's not the pump..... and i by passed the relay.. and the pump ran continualy but pumped nothing up.... but if i use the 9 vold i can push fuel with no problem....
_____________________________
Hatchit...87 accord DX, hatch back (no auto seat belts)2nd ower, little wear-N-tare, CLEAN AS NEW(in 1987)
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/25/2007 2:40:30 PM
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Hatchit
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and i was told i have a bad ground wire...so i got a new one but can't fallow it down thru to replace the bad one>? i dont see where i can take off the old one without splicing the wires and i know thats a BAD idea to do
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Hatchit...87 accord DX, hatch back (no auto seat belts)2nd ower, little wear-N-tare, CLEAN AS NEW(in 1987)
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/25/2007 2:42:43 PM
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Hatchit
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quote:
ORIGINAL: Hatchit
and i was told i have a bad ground wire...so i got a new one but can't fallow it down thru to replace the bad one>? i dont see where i can take off the old one without splicing the wires and i know thats a BAD idea to do
thats the main ground from the battery....
_____________________________
Hatchit...87 accord DX, hatch back (no auto seat belts)2nd ower, little wear-N-tare, CLEAN AS NEW(in 1987)
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/25/2007 10:22:52 PM
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deserthonda
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quote:
ORIGINAL: Hatchit
quote:
ORIGINAL: deserthonda
quote:
ORIGINAL: Hatchit
ok all your test clear out.(desert honda)... i can push thru with the 9 volt.... but still nothing when the cars on?
What do you mean all the tests clear out ?? if they did, that would mean that you also have power and ground at the fuel pump connectors ?? if so, why do you need to apply another battery source to make the pump activate??? you are comtradicting yourself or i am not understanding what you said properly ..what i am getting is that .. if you need to apply another battery source , that would mean that you got either NO power or NO ground // Am i wrong ?? is there power ( 12 volts ) and ground available at the fuel pump connector??? yes or no ..
power is there all the way up to the fuse box.... it cecks out all the way thru..... and what i was trying to say is that (when he cars on) it pumps nothing.... but just to check the pumps operation i used a 9 volt to see if it's a abd pump.... it's not the pump..... and i by passed the relay.. and the pump ran continualy but pumped nothing up.... but if i use the 9 vold i can push fuel with no problem....
Ok what you are saying does not make any sense at all//////...............
ok let me ask you 1 more time ,, when you unplug the connector at the fuel pump ,, key on, someone crank the engine is there any power ( 12 volts ) at the yellow wire ? yes or no ...
is there any ground on the black wire ?? yes or no ...
what you are saying in the above statement makes no sense to me .. ( if you use a 9 volts power to the fuel pump it pump gas ) ( you bypass the realy, the pump runs continuosely but it pumps no gas ) .
Forgive me if i am not understanding your statement ..
chk the voltage with a volt meter at the yellow wire .at the fuel pump connector and let us know,, and also chk to make sure you are getting a good ground at the black wire .
< Message edited by deserthonda -- 3/25/2007 10:27:36 PM >
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No Year No Model in Your signature
No Help from me
Take a look in the DIY section before asking for help
Always Diagnose First,,, Before Replacing Parts
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/27/2007 6:49:29 PM
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sir_nasty
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any more luck with this....? If I understand you correctly with the jumper in place, the pump does pump but no fuel flows, if you disconnect the wires and power the pump with just a 9V battery fuel DOES flow like normal? So you are getting electricity to the pump.... If that's the case (power to the pump but no fuel out front) I would probably take a 2 liter bottle and fill it with fuel, then run the line off the intake side of the fuel pump directly into the bottle of gas, if it pumps just fine then try to start the vehicle, if it pumps/runs, reconnect that line to the tank and try it again, if it doesn't pump and doesn't run then you've got a problem with your fuel tank....
I know this theory sounds odd but I'm wondering if the 9V is a small enough power source that it's not creating as much suction as the pump gets when it runs off the car battery (make sure your battery hasn't died by now...) so when the pump kicks on with it hooked up normally to the car it's sucking some junk up and cloging the line in the tank....
_____________________________
1981 Civic Station Wagon - ROhnda (Really Old Honda)
1981 Honda CB650 Motorcylce - WHEE What More can I say?
2000 Lexus RX 300 - Oooh baby my wife let me drive it once!!
Quote: Life''''s great but it''''s not all beer and skittles
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RE: beautifuly clean 87 dx manual fuel pump problem - 3/27/2007 7:52:18 PM
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deserthonda
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if he uses a 9 volt power supply it works ( pumps fuel ) if he uses car power and bypass the relay , pump runs but does not pump fuel.. It almost sounds like there is a voltage drop issue ,,,,,,,Not enough voltage getting to pump with regular car power .......enought o make it run but not enough to pump fuel..
based on what he says it is the only thing that makes sense to me .
Unless i am totally MIS understanding what he is saying ..
If indeed it is a voltage drop could be an issue with the fuse box itself
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No Year No Model in Your signature
No Help from me
Take a look in the DIY section before asking for help
Always Diagnose First,,, Before Replacing Parts
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