ATTN only if u know ur shit
03-08-2003, 08:17 AM
#1
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ATTN only if u know ur shit
94 civic dx coupe with 95 ls swap, i used the LS harness with the motor and my question is. it worked great for the first day, ran perfect idled fine everything........... now its dead. i have no fuel, no spark, nothing the motor jus turns over. i have replaced the fuel system and new plugs wires the whole deal.
right as the car died i was driving it and it would backfire horribly and the check engine light would flash as the car backfired. the light would go off and the car would run fine. the shit looked like a orange strobe light in my dash as my car backfired.
now the car wont run and i cant even get a check engine light to come on, EVEN after i have jumped the wiring harness into "limp" mode. the check engine light is supposed to come on when u start the car and it wont do that.
i have tried a new ecu, new fuel pump, new ignition, but nothing works. the fuel pump doesnt even prime when u first turn the key.
so my question is the ls wiring harness differant than the dx??? it plugged right in and like i said it did run perfect for a day before it went to shit...... please respond with helpful info if u have any
right as the car died i was driving it and it would backfire horribly and the check engine light would flash as the car backfired. the light would go off and the car would run fine. the shit looked like a orange strobe light in my dash as my car backfired.
now the car wont run and i cant even get a check engine light to come on, EVEN after i have jumped the wiring harness into "limp" mode. the check engine light is supposed to come on when u start the car and it wont do that.
i have tried a new ecu, new fuel pump, new ignition, but nothing works. the fuel pump doesnt even prime when u first turn the key.
so my question is the ls wiring harness differant than the dx??? it plugged right in and like i said it did run perfect for a day before it went to shit...... please respond with helpful info if u have any
03-08-2003, 08:47 AM
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boy this should be fun....
ok do the dash lights come on when you try to strart it?
the next thing would be to check all of your connections. unplug and plug back in everything! check all of your grounds. when you turn on the key to the run position do you hear the fuel pump energize?
it could be so many different things.
check ALL of your fuses under the dash as well as under the hood. what ecm are you using? the ls harness should be fine in the dx.
where is the car? if all else fails i may be able to look at it
let me know how it does
ok do the dash lights come on when you try to strart it?
the next thing would be to check all of your connections. unplug and plug back in everything! check all of your grounds. when you turn on the key to the run position do you hear the fuel pump energize?
it could be so many different things.
check ALL of your fuses under the dash as well as under the hood. what ecm are you using? the ls harness should be fine in the dx.
where is the car? if all else fails i may be able to look at it
let me know how it does
03-08-2003, 09:34 AM
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I would have to say check all grounds as well. I was going to ask if you tried another ecu, but you already did. Like Mike said it is hard to pinpoint the problem, it could be a few things. Anwer his questions and then I am sure we or somebody else may be able to help you out.
03-08-2003, 09:51 AM
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Originally posted by CHAHONDA
boy this should be fun....
ok do the dash lights come on when you try to strart it?
the next thing would be to check all of your connections. unplug and plug back in everything! check all of your grounds. when you turn on the key to the run position do you hear the fuel pump energize?
it could be so many different things.
check ALL of your fuses under the dash as well as under the hood. what ecm are you using? the ls harness should be fine in the dx.
where is the car? if all else fails i may be able to look at it
let me know how it does
boy this should be fun....
ok do the dash lights come on when you try to strart it?
the next thing would be to check all of your connections. unplug and plug back in everything! check all of your grounds. when you turn on the key to the run position do you hear the fuel pump energize?
it could be so many different things.
check ALL of your fuses under the dash as well as under the hood. what ecm are you using? the ls harness should be fine in the dx.
where is the car? if all else fails i may be able to look at it
let me know how it does
YES. already done that with the connections. grounds are fine. NO the fuel pump does not energize and i get no spark from my wires either. all fuses are fine both in car and in engine bay. Is their a fuel pump relay somewhere cuz i have been unable to locate one....... i am using a ls ecu... the car can be looked at at the corner of military and providence at the tune up plus store. ask for joe and he will show u the car
03-08-2003, 10:17 AM
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Originally posted by LookslikeLS
Is their a fuel pump relay somewhere cuz i have been unable to locate one.......
Is their a fuel pump relay somewhere cuz i have been unable to locate one.......
03-08-2003, 11:11 AM
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Yes, but you need spark to do that. Have you tried an igniter or coil? I am not so sure that those will cure your problem though. It is kind of strage that it was running fine and then all of the sudden you have multiple problem from basically out of nowhere.
03-08-2003, 11:50 AM
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Originally posted by 0psi
it is kind of strage that it was running fine and then all of the sudden you have multiple problem from basically out of nowhere.
it is kind of strage that it was running fine and then all of the sudden you have multiple problem from basically out of nowhere.
THANK THE LORD SOMEONE ELSE UNDERSTANDS MY FRUSTRATION
03-08-2003, 03:59 PM
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I had a similar problem on my 92 hatch w ls swap it was a ground that i had not tighned all the way. Just thought i would give you a place to look sorry if i was no help