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im getting three codes p300 p301 and p302 it started doing this before i changed the head gasket i thought it was just from it leaking but it is still doing it i got new sparkplugs in it and i really dont know why it is doing this and when i drive it the CEL blinks and it doesnt run very good i checked if it was getting spark and it is so does anybody have any ideas on what it could be


i swear this car makes me want to

 
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http://www.obd-codes.com/p0302

http://www.obd-codes.com/p0301

http://www.obd-codes.com/p0300

Random misfires usually point to a faulty Crankshaft/Camshaft position sensor, but these misfires constantly occur on Cylinder 1 & 2 it points to the ignition coils for those cylinders.

 
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i suppose maybe i could switch them around and see if the problem moves but what else could it be if it isnt them

 
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i switched them around no real difference that i could tell so i ordered a new crank sensor so ill start with that and see if it helps

 
Rep Power: 518

Erase codes.

Disable (unplug) the EGR valve (assuming it is so equipped). Drive it and see if the misfire codes come back while the valve is unplugged.


It will turn on the light and set a code for the EGR, but right now I only want to see if the misfire codes come back.

 
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no egr only 01-05 ex and all 04-05 civics had them

also i checked the codes again today and p304 came up too

 
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And someone would know what year and trim you have how?

Are the coils still swapped when p304 comes up or did you put them back?

 
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01 dx
no one told me i looked it up. and i was just saying
i put them back the way they were