Weird sputter/misfire

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Old Oct 8, 2005 | 06:32 PM
  #1  
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From: Chucktown, SC
Default Weird sputter/misfire

89 CRX b16a swap
Open Header
No o2
Its open header because I don't see the need to put an exhaust on until I get my full 3" exhaust in

ANYWAYS on to tonight. This is the cars first trip over 20 minutes. I took it about 45 minutes away from my house to meet up with a fellow h-t memberSo I get out on the highway and after about 15 minutes of driving it would sputter bad and I would have to apply more pedal to get it to stay at 70mph. Then All of the sudden it would shudder back and BOOM there we go, its normal. THEN again with it. I get to the gas station where we are meeting thinking maybe the plug wire had come off. Nope. I leave. I get going praying the whole way (literally) and after about 5 minutes sputter and then back. So I started paying very close attention to my actions. I noticed it was only doing this after I had lifted off the gas (as for an upcoming slower car) and got back on it. So I continued praying until I got into city limits (at least there its light and populated and theres less of a chance I'll hear "boy you sure got a purdy mouf."). No more problems after this. I even (against better judgement) took out a 98+ gsr. It ran great. No stutter, no misfire, just ran awesome.

So what is going on here? Is it o2 related?

BTW-no smoke or funny smells

Thanks!!!


Modified by ih8jdm at 11:51 PM 10/8/2005
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Old Oct 8, 2005 | 06:35 PM
  #2  
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From: Thornton, colorado, usa
Default Re: Weird sputter/misfire (ih8jdm)

yeah i think o2 is a good hypothesis.. i have also experienced a shudder under acceleration from my distributor going bad. i would change your o2 sensor first and give that a try. what ecu are you running?
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Old Oct 8, 2005 | 06:37 PM
  #3  
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Default Re: Weird sputter/misfire (sanimalp)

its not really under acceleration. Its like Im at 70->let off gas to 65->get back on to maintain speed->stutter.

Im running a pr3.
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Old Oct 8, 2005 | 09:18 PM
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Default

if the wires are old, replace them.. atleast you can rule that out.

i had a similar issue and it was the wires..
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Old Oct 8, 2005 | 09:30 PM
  #5  
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Default Re: (2point2)

wires have less than 1500 on them
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Old Oct 8, 2005 | 09:33 PM
  #6  
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Default Re: (ih8jdm)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ih8jdm &raquo;</TD></TR><TR><TD CLASS="quote">wires have less than 1500 on them</TD></TR></TABLE>

stock? and are you always pulling them off?
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Old Oct 8, 2005 | 09:41 PM
  #7  
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From: Chucktown, SC
Default Re: (2point2)

They are NGK wires. I have had to pull them a few times to check plugs and what not when it was running like doodoo previously.
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Old Oct 9, 2005 | 06:07 AM
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Default Re: (ih8jdm)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ih8jdm &raquo;</TD></TR><TR><TD CLASS="quote">They are NGK wires. I have had to pull them a few times to check plugs and what not when it was running like doodoo previously.</TD></TR></TABLE>

good stuff..

What i also like to do is swap a known good distributer with a friend when i have ignition problems. give that a try... i've seen distributers seize up from sitting for a while, it's a very important thing to check when swapping an older honda motor.
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Old Oct 9, 2005 | 01:04 PM
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Default Re: (2point2)

Yeah. I had one that the bearing went bad in and another that the CKP sensor was bad on startup. Im about ready to give up and convert the whole car to an OBD-1 setup.
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Old Oct 9, 2005 | 06:31 PM
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Default Re: (ih8jdm)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ih8jdm &raquo;</TD></TR><TR><TD CLASS="quote">Im about ready to give up and convert the whole car to an OBD-1 setup.</TD></TR></TABLE>

not a bad idea at all..
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