2nd Gen Neon 2000 - 2005 2nd Gen Neon

Sputter under load.

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Old Jun 8, 2008 | 05:34 PM
  #1  
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turboplz
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From: Battle Creek, MI
Default Sputter under load.

Ok, this is in my Fiancee's 01 Neon SE w/3spd auto. The problem has been around since we bought the car @ 80,000 miles and it now has 85,000 on it.

From time to time coming out of idle(ie, leaving a stop light) the car will start to sputter as if it's dropped two cyilinders and will do this until you completely back off the throttle. It will randomly do this, but for what ever reason it has been doing it more often now the temperatures are warmer outside and it's more humid. It also does this anything past 1/2 throttle.

With the A/C on the problem is much much worse, car will nearly stall out at idle when the a/c is turned on and you can barely give it any gas at all. Another thing I noticed is cruising down the interstate or at any cruising speed you can feel the car missing evey few seconds with the A/C on.

I have replaced the plugs with base Champions at the correct gap and wires have been replaced with Duralast brand wires. I am going to give the ignition coil a test and make sure it is within specs, other than that I don't really know, PCM possibly? This past week the factory car alarm has been randomly going off and I think it's due to the humidity...maybe a problem with the PCM? Really just kind of lost and looking for suggestions here. Done a search but nothing really conclusive has come from it.

Thanks,
Jason
 
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Old Jun 8, 2008 | 06:35 PM
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Izero's Avatar
Izero
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Default RE: Sputter under load.

i cant seem to post any kinda long post so PM me and ill answer your question(s)
 
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Old Jun 8, 2008 | 06:39 PM
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Default RE: Sputter under load.

Does the idle ever drop below 1000? Say like 500 at stop lights?
 
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Old Jun 8, 2008 | 07:54 PM
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turboplz
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Default RE: Sputter under load.

yup, only when warm outside though
 
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Old Jun 8, 2008 | 08:47 PM
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Default RE: Sputter under load.

oh could be the IAC then too....
 
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Old Jun 8, 2008 | 09:06 PM
  #6  
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turboplz
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Default RE: Sputter under load.

IAC shouldn't have any affect outside of Idle though from my experience....
 
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Old Jun 8, 2008 | 09:56 PM
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Default RE: Sputter under load.

if the idle is too low and you FLOOD the engine with fuel and not enough air yes it will... tyvm
 
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Old Jun 8, 2008 | 10:07 PM
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Default RE: Sputter under load.

Bad IAC readings.
Bad O2 sensor.
Clogged air filter.
Bad throttle position sensor.
Banana in your tailpipe.

These are a few of my favorite things... could be any one of them or more. Check for the banana first [sm=signs003.gif]
 
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Old Jun 9, 2008 | 08:11 AM
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Default RE: Sputter under load.

or potatoe
 
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Old Jun 9, 2008 | 08:36 AM
  #10  
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turboplz
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Default RE: Sputter under load.

My personal favorite is the expanding foam inside the muffler
 
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