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po420 and no power, it dies out

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Old 11-23-2010, 03:59 PM
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Default po420 and no power, it dies out

Hey guys i have a 2000 honda civic bone stock that i bought and is great but recently when i go to give it gas it pretty much dies... i gutted the cat since i was afraid it was clogged but put it back together and same thing it barely moves and 90% of time dies out... any ideas...o2 sensor, egr valve, plugs?... any help please thanks alot!!!!
Old 11-23-2010, 04:05 PM
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Default Re: po420 and no power, it dies out

Start here:

plugs, wires, cap, rotor, and mechanical timing
Old 11-23-2010, 04:13 PM
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Default Re: po420 and no power, it dies out

i have this same problem with my girl friends car po420 is a bad converter. I'm looking for more info on this also.
Old 08-07-2011, 10:55 AM
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Default Re: po420 and no power, it dies out

my daughters car is doing the same thing, we have changed the fuel filter, distributor cap, coil, plugs, plug wires, getting ready to change the pvc -- after we changed everything once it seemed to run good again for about 5 minutes, then it just died... so if anyone got any help or anything worked would be great to know more
Old 08-07-2011, 10:57 AM
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Default Re: po420 and no power, it dies out

Originally Posted by chel_renee
my daughters car is doing the same thing, we have changed the fuel filter, distributor cap, coil, plugs, plug wires, getting ready to change the pvc -- after we changed everything once it seemed to run good again for about 5 minutes, then it just died... so if anyone got any help or anything worked would be great to know more
Explain this^ in much more detail.
Old 08-08-2011, 10:19 AM
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Default Re: po420 and no power, it dies out

The car starts without any issues. When we press on the gas it sputters out and dies. once and a while we can drive it for a bit but eventually sputters and dies. my daughter said she drove it through some high water on highway but nothing higher than a normal 'heavy downpour' before it started happening. no codes came back from the comptuer when we put it on there.

we have changed out the coil, plugs, plug wires, distributor cap, cleaned air intake, feul/water cleaner in gas, gas filter and we are waiting for the pcv value to come in to replace it. once we gave it a new tune-up it did run for about 10 minutes with no issues but then sputtered and died. finally got it started enuf to get it back home.

could there be water in the gas tank? any other sensor? anything else we need to test. before this it wasnt really running bad or anything. the honda dealer we originally took it took couldnt isolate the problem just suggested things to start updating (which we have done so far)..

thanks for any help. if we could figure it out i'd take it in to have it done, i just dont want to fix things they are not sure are the issue
Old 08-08-2011, 12:08 PM
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Default Re: po420 and no power, it dies out

^Check the mechanical timing and compression test the cylinders.
Old 08-13-2011, 08:53 AM
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Default Re: po420 and no power, it dies out

its the Catalytic converter, its plugged up, replace it or it might cause engine damage
Old 08-13-2011, 07:27 PM
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Default Re: po420 and no power, it dies out

Originally Posted by admess188
Hey guys i have a 2000 honda civic bone stock that i bought and is great but recently when i go to give it gas it pretty much dies... i gutted the cat since i was afraid it was clogged but put it back together and same thing it barely moves and 90% of time dies out... any ideas...o2 sensor, egr valve, plugs?... any help please thanks alot!!!!
How does the car run at idle?
Old 08-13-2011, 07:29 PM
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Default Re: po420 and no power, it dies out

Originally Posted by chel_renee
The car starts without any issues. When we press on the gas it sputters out and dies. once and a while we can drive it for a bit but eventually sputters and dies. my daughter said she drove it through some high water on highway but nothing higher than a normal 'heavy downpour' before it started happening. no codes came back from the comptuer when we put it on there.

we have changed out the coil, plugs, plug wires, distributor cap, cleaned air intake, feul/water cleaner in gas, gas filter and we are waiting for the pcv value to come in to replace it. once we gave it a new tune-up it did run for about 10 minutes with no issues but then sputtered and died. finally got it started enuf to get it back home.

could there be water in the gas tank? any other sensor? anything else we need to test. before this it wasnt really running bad or anything. the honda dealer we originally took it took couldnt isolate the problem just suggested things to start updating (which we have done so far)..

thanks for any help. if we could figure it out i'd take it in to have it done, i just dont want to fix things they are not sure are the issue
How does the car run at idle? Does it ever not start or does it start but only act up driving?
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