tech help please im stuck....
tech help please im stuck....
ok lets start off with what I replaced main relay, plugs and wires.So I have a 99 civic lx and it cranks but wont start.I have tested the spark all for have spark. also im getting fuel to my rail. but im not getting any pulse to the injectors.also when I turn the key to the on position the fuel pump constanly runs never stops.but before it was no fuel pump when I turn the key to the on position even though the main relay would click, so I replaced it with one from autozone.but now I don't hear any clicks but my fuel pump runs.im lost some on please help!!!!!!!!!!!!!!!!
If you think a good mechanic is expensive, try hiring a bad one
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Re: tech help please im stuck....
No silver bullets here. Far too many things going on here. Lots of issues are possible, and there are many common problems, but.....
1) Firing order, since you dinked with the plug wires..
2) Wiring diagram, voltmeter, and an understanding of how the stuff is supposed to work.
Test, don't guess.
What controls the fuel pump?
What controls the main relay?
What was the original problem with the car, before you started throwing parts at it?
1) Firing order, since you dinked with the plug wires..
2) Wiring diagram, voltmeter, and an understanding of how the stuff is supposed to work.
Test, don't guess.
What controls the fuel pump?
What controls the main relay?
What was the original problem with the car, before you started throwing parts at it?
Re: tech help please im stuck....
Original problem was crank no start the guy I bought it from said his mechanic said it needed a new ecu and distributor.
But ive read its generally the main relay. So I wanted to try that first.now the fuel pump turns on but im not getting fuel in the chamber. Ive checked for spark so I know my dizy is good but my injectors are not opening
But ive read its generally the main relay. So I wanted to try that first.now the fuel pump turns on but im not getting fuel in the chamber. Ive checked for spark so I know my dizy is good but my injectors are not opening
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
Posts: 32,017
Likes: 256
From: Midwest. Aiming about mid-chest
Rep Power: 518 










Re: tech help please im stuck....
Ok....
Does the check engine light come on when you turn the key on? (key on, not running)
Does it stay on or go out in 10 seconds?
Does it have any codes?
The pump should not run constantly. EDIT: Until the engine is running. Pump should run for 2 seconds when the ignition is switched to ON, then wait until the starter is engaged to run constantly.
If you plug in the original main relay again, does the pump run correctly?
You have no pulse from the injectors: What's missing?
Is there battery power at the injectors?
Is there a ground pulse at the injectors during cranking? (will a noid light flash?)
How long has the car been sitting? Days? Years?
Got a wiring diagram?
Got a voltmeter? (and know how to use it?)
Does the check engine light come on when you turn the key on? (key on, not running)
Does it stay on or go out in 10 seconds?
Does it have any codes?
The pump should not run constantly. EDIT: Until the engine is running. Pump should run for 2 seconds when the ignition is switched to ON, then wait until the starter is engaged to run constantly.
If you plug in the original main relay again, does the pump run correctly?
You have no pulse from the injectors: What's missing?
Is there battery power at the injectors?
Is there a ground pulse at the injectors during cranking? (will a noid light flash?)
How long has the car been sitting? Days? Years?
Got a wiring diagram?
Got a voltmeter? (and know how to use it?)
Last edited by ezone; Jan 11, 2014 at 09:50 AM.
Re: need some help guys pleeaassee.. new to the civic seen.
Man I don't know but is just bought my civic a couple weeks ago. I hope someone who knows answers soon. But let me say welcome to the forum and congrats on getting a sixth gen civic. I bought a 2000 coupe and am reading every post I can find if I come across anything relevant I'll post a link. Good luck. And if u figure it out before someone tells u would u please update this post?
Thanks
Grant
Thanks
Grant
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
Posts: 32,017
Likes: 256
From: Midwest. Aiming about mid-chest
Rep Power: 518 










Re: need some help guys pleeaassee.. new to the civic seen.
Man I don't know but is just bought my civic a couple weeks ago. I hope someone who knows answers soon. But let me say welcome to the forum and congrats on getting a sixth gen civic. I bought a 2000 coupe and am reading every post I can find if I come across anything relevant I'll post a link. Good luck. And if u figure it out before someone tells u would u please update this post?
Thanks
Grant
Thanks
Grant
Re: tech help please im stuck....
okay so I went ahead and repaired the main relay and now the fuel pump works properly and now the fuel injectors are pulsating but now I don't have no spark. also when I turn the key on the check engine light turns on and when I get the second click from the fuel pump the check engine light blinks of the comes back on and stays on
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
Posts: 32,017
Likes: 256
From: Midwest. Aiming about mid-chest
Rep Power: 518 










Re: tech help please im stuck....
So, pump runs now, you have the PCM getting powered up (CEL is at least working)
Are there any codes in the PCM?
In post #3 you said you checked spark already? But now it doesn't have spark?
Now you have to figure out the no spark deal.
Test:
Pull the distributor cap off, inspect for spark directly out of the coil itself. (use a grounded screwdriver or something to create a spark gap) Have an assistant crank it for you.
Can it create any spark at all? How much?
If it can make a spark that can jump a 3/4" gap, it's good.
If it can only muster 1/16" spark, it's bad.
If no spark at all, more testing needs done.
Do you have a dwellmeter available?
Are there any codes in the PCM?
In post #3 you said you checked spark already?
Ive checked for spark so I know my dizy is good
Now you have to figure out the no spark deal.
Test:
Pull the distributor cap off, inspect for spark directly out of the coil itself. (use a grounded screwdriver or something to create a spark gap) Have an assistant crank it for you.
Can it create any spark at all? How much?
If it can make a spark that can jump a 3/4" gap, it's good.
If it can only muster 1/16" spark, it's bad.
If no spark at all, more testing needs done.
Do you have a dwellmeter available?
Last edited by ezone; Jan 11, 2014 at 02:28 PM.
Re: tech help please im stuck....
There wet. Its weird my pump works check engine light stays on once ce turns off fuek pump no longer works but the spark plugs start firing trying to start make no sense
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
Posts: 32,017
Likes: 256
From: Midwest. Aiming about mid-chest
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Re: tech help please im stuck....
You KNOW it's getting fuel into the cylinders..
You say it's got spark..
Will the spark jump a 1/2 inch gap?
Check for codes?
Cam timing/timing belt correct?
Compression test?
Flooded with fuel, re-oil the cylinders?
This is getting pretty long and I can't remember stuff already LOL
You say it's got spark..
Will the spark jump a 1/2 inch gap?
Check for codes?
Cam timing/timing belt correct?
Compression test?
Flooded with fuel, re-oil the cylinders?
This is getting pretty long and I can't remember stuff already LOL
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