crank, no spark, no fuel, good fueses, good main relay
 

alright,1992 honda civic hatch, d15b8 p05 ecm. so i was working on wring a a fuel level gauge when i touched my + to my neg wire to my fuel pump. ive checked all i can think of, my fueses are all good and i got a new main relay, my wires are good, checked those, if i wire 12v to the fuel pump it runs but the car wont spark now? bad ecu? i cant even find my map sensor i dont even know if i have one to be honest? please help!!:eek:

bump..

recheck ur fuses

ive checked every fues twice today, and looked at my wiring diagrams and checked all my fuel fuses. it seems like the ecu wont send a signal to the main relay to run the fuel pump? no signal from the wire from the ecu, but if i use a jumper wire it will run the pump. new relay too...

there is a 30 amp fuse under the dash that runs the fuel pump and ecu

ill go check again bro, i appreciate the help by the way. ill post again in a sec

ok i had two and i checked both one was to the far right, right of 11, and one was 2 i think and their both good

and the fuses under the hood are good??

ya i changed one just because it looked black, but it made no diff. if its a fues im not seeing it, i checked them all. could it be my ecu?

i doubt its the ecu, usually a fuse will blow. under the dash is a 30 amp fuse that is on the side of the fuse box, that should be the ignition fuse its what sends power to the ecu and fuel pump, do you have a test light?

i have a volt meter, and when you say under the hod on the fuse box side you mean the driver side (right) looking at the front of the car?

oops sorry thought you said hood not dash, the fues looked good, can i volt it?

fuses under the hood are on the passenger side in the black box by the batt.

test the 30 amp fuse under the dash that sits off by itself for power when the key is in the "on" position (dash lights should be on)

alright be right back

both my 30s have 12v

does the dash lights come on when you turn key to on" position?

bump...?

ya they all come on? check engine is up too. but i removed that thirty so i lost my engine codes and cant check them

?????????????

Yeah just check everything in your dizzy..anything can go wrong in there to not have a spark. Also..do you hear the fuel pump come on the 2nd click when you turn the key?


It should be right next to your fuel filter..on the right side when you're looking at the engine..it's the little small black box(about the size of a ring box).

i dont know what a dizzy is sorry? but my map sensor is nowhere in my engine bay ive looked everywhere, im wondering if the previous owner moved it

oh, and no when i turn the key to any position it doesnt run

Check hood fuse 31 and dash fuses 24 and 18.

Why have you removed any fuses?

When you turn the key to ON(II), does the CEL remain on or turn off after 2 seconds. If you truly have no MAP sensor, then a MAP sensor CEL code will be thrown.

i checked all those fueses like 5 times, their all good.

ya ive removed almost every fuse to check if their bad or not.

it remains on as long as its turned too 2nd position.

-Pull 92-00 CEL codes;


^ click that link and follow instructions then post results

i did that and it stays solid? so im guessing im not throwing any codes? and doesnt my ecu reset when i ull the 30 fues under the hood that links the clock and ecu

do you have anyone near by that u can use their ecu? any 92-95 civic ecu will work

Did you check those three installed fuses for voltage on both test tabs?

Have you cleaned and tightened the ground wire attached to the thermostat housing?

Otherwise, you may have fried the ECU.

here is a link

http://techauto.awardspace.com/ecu.html

i tried my local junkyards yesterday and no one has one that i know off.. im thinking ecu too, i just dont understand how it didnt blow a fues first?

and ronj i checked all taps for current, their good,and i dont think my ground is bad because the fuel pump runs if i by pass the relay using its stock ground?

ill give the ground a try, and hope for something but just ebay or something for a p05 ecu?

The fuel pump will run after bypassing the main relay even if the thermostat ground is bad.

yea you can grab one off ebay or craigslist

is your civic a cx model?

alright ill post again when i check my thermo ground, sometime later tonight