so i was driving my 1989 civic std hatch today on the highway and alll the sudden the engine light comes onand the car looses all power and dies.... so i pull over andnothing it just cranks? fuel pump is not pumping and there is weak spark if any. i tried 2 main relays and 2 distributors, and 2 computers..... and i still dont have any fuel flow. im stumped. what else could it be? i tried pouring straight heet(alll i had) into the intake and it almost tries to start off of that....also the computer doesnt not blink at all..... so idk what should i try or what could it be?

motor is d15 b1


Modified by aptyk88 at 7:48 AM 9/8/2008

 

ignition switch
grounds and battery connections
Clogged fuel filter
Bad air filter, spark plugs, rotor, distributor cap
maybe your fuel pump is bad

 

Well, is it flashing any codes? That would be the first place to look.

Find the code (s) and report back.

 

nope its like the computer isnt even getting power? the engine light just stays on. there is no spark and the fuel pump is not running....... what could it be?

 

I would recommend checking all your fuses and buying a power meter tester and use it to check everything that gets power.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aptyk88 &raquo;</TD></TR><TR><TD CLASS="quote">nope its like the computer isnt even getting power? the engine light just stays on. there is no spark and the fuel pump is not running....... what could it be?</TD></TR></TABLE>

Try this: turn the key to the accessory (II) position and see if the light on the ECU blinks or stays solid (lift up the carpet in the passenger's footwell). If it's solid, you probably need a new ECU.

 

check your grounds

 

my money is on ignition switch..

 

would an ignition switch that cause the computer not to get power?

 

and the ecu does nothing.....

 

the ignition switch controls everything. if one of the circuits is bad in it, entire circuits in your car do not behave as expected.

 

no power to the main relay.... checked it with a meter. ignition switch?
my bro has the same car 90 civic hatch.....and i checked all his main relay wires and his were fine.


Modified by aptyk88 at 7:39 PM 9/9/2008

 

here you go.. http://mycomputerninja.com/~jo....html

 

tried a known good ignition switch and stilll nothing..... where do i go from here?
i tried my ignition switch in my bros car and it works fine

 

your alternator didnt go bad did it? can you check your battery to see if you have something between 12 and 14 volts? was your battery light on before all this happened?

 

no the battery light didnt go on...... i was on the highway andd was goin 60 mph and the engine light came on and the engine died.....

it does crank im just not getting spark and the fuel pump isnt running......


Modified by aptyk88 at 12:12 PM 9/10/2008

 

alright, well next in the pipeline would be the main relay then. you should test it to see if all the circuits are working. That would explain the fuel pump not running and also the ecu not getting power.

 

ok the front right pin get power.....
and the back left 3 pins arent......


thats the 4 that get power on my bros

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sanimalp &raquo;</TD></TR><TR><TD CLASS="quote">my money is on ignition switch.. </TD></TR></TABLE>

I'm with this guy it would be the first thing i would check.

 

i checked it its good

 

alright, here is what i have as far as testing a main relay.

the top pins on the relay, or the side with the clip latch, has pins left to right:
#8 then empty then #4 then #2

the bottom pins have left to right:
#7 then #5 then #3 then #1

you need positive battery voltage to number 4, with negative battery terminal to pin 8. then you need to check continuity between the 5 and 7 pins.

if there is not continuity, you need to replace the main relay or resolder it.

if there IS continuity perform this test:

attach battery positive voltage to terminal 5 and negative battery voltage to terminal 2. Check continuity between terminals 1 and 3.

if there is not continuity, you need to replace the main relay.

if there IS continuity, you need to perform the next test.

Attach positive battery voltage to terminal 3 and negative voltage to terminal 8. check continuity between terminal 5 and terminal 7.

if there is not continuity, replace the relay.

If there is, then your relay is not the problem.

 

ok so i got the fuel pump and computer to work..........still no spark..........
there was 2 pins broke off the fuse box inside the car

 

its alive again........ there was prongs broke offf the box that detaches from the back of the fuse box

 

thank you sanimalp for all your help. idk how prongs break off connectors while driving?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aptyk88 &raquo;</TD></TR><TR><TD CLASS="quote">thank you sanimalp for all your help. idk how prongs break off connectors while driving?</TD></TR></TABLE>

Corrosion + vibrations / road chaff.