2003 EX sputtering in idle with Check Engine light
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2003 EX sputtering in idle with Check Engine light Codes
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
67000 miles; Any suggestions where to start?
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
67000 miles; Any suggestions where to start?
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Re: 2003 EX sputtering in idle with Check Engine light
yeah either plugs or clogged injectors or low fuel pressure (bad fuel pump) or bad ignition coils (very rare). if its not those, you have more serious problems like a blown headgasket.
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From: United Kindom, Middlesbrough
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All for cylinders.... could be obviously plugs.
But im sure it wouldnt cause all four at once, I'd say maybe fuel badly clogged air box.. or more seriously head gasket.
Does your oil have coolant in it?
But im sure it wouldnt cause all four at once, I'd say maybe fuel badly clogged air box.. or more seriously head gasket.
Does your oil have coolant in it?
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Nope, Oil is clean.. No start up problem at all. Idle goes around 1200 and settles to around 750 and then sputtering;
One mechanic said it's the computer control, a change would require reprogramming keys also; make any sense?
One mechanic said it's the computer control, a change would require reprogramming keys also; make any sense?
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From: Gray, TN
Rep Power: 255 Re: 2003 EX sputtering in idle with Check Engine light
I had this same problem.. Same CEL codes and everything..
In my case, it was the TB and IAC valve.. Spoke with Gearbox about it..
In my case, it was the TB and IAC valve.. Spoke with Gearbox about it..
Originally Posted by gearbox
it is the piece bolted to the TB with the two coolant lines feeding into it. just take the radiator cap off to depressurize the system, then remove the coolant lines. its easier to remove the whole tb and then take off the iac valve to clean it. just spray carb cleaner to get out the carbon buildup. the only problem is sometimes the screws are really hard to remove.
iac by itself
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iac by itself
more pics
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Rep Power: 0 Re: 2003 EX sputtering in idle with Check Engine light
well, in order to completely eliminate any ignition problems, i decided to change the spark plugs and start with the cheapest option. I had checked these out visually a couple of days into the problem. Nothing was noticed then, plus, I had no start up or pick up problem, except for the sputtering in idle.
When I dropped the third plug on to the floor, I noticed the spark tip ceramic inlay on that plug split. I assume this had a hairline crack, which I failed to notice earlier, and it split upon shock when it hit the floor.
That was it, with new platinum tip plugs it's running smooth...................;-)) Good day to everyone... Thanks for your input
When I dropped the third plug on to the floor, I noticed the spark tip ceramic inlay on that plug split. I assume this had a hairline crack, which I failed to notice earlier, and it split upon shock when it hit the floor.
That was it, with new platinum tip plugs it's running smooth...................;-)) Good day to everyone... Thanks for your input
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