civickid03

Ok, randomly my 2003 Civic Ex (d17 1.7 vtec sohc) decides to idle very roughly. I've tried different gas. I normally use premium however i used super to see if there was a difference - there was no difference. So, I did a test, I turned off the car and started it back up. Problem dissappeared (for that commute home). It still happens randomly. I live in cold-*** northern virginia where the weather has been around 20 degrees. I have only noticed this problem this winter, the car has about 15k miles.

Also, sometimes my car takes forever to start and turnsover for 1-3 seconds (like an old car). I was thinking a sensor might have gone (cranksensor) or something becuase that happened once before when i spun my car out in the rain and hit a curb (no exterior damage cuz i didnt hit nothin but a goddamn curb). They replaced the cranksensor and then later replaced the ECU after no change (check engine light stayed on). After the ECU was replaced everything was "fine". Well I am rambling please offer any advice if you can.

FrostySol

have you checked your air filter lately? I know it sounds simple, but sometimes those can cause a strange idle

b16ahybrid

Also coolant level. If it's low it can cause an erratic idle

civickid03

I have a stock airbox. I am thinking of gettin an Iceman tho! woo

I replaced the coolant when it was low about 2-3 months ago. Should be ok now but I should probably check again. It made this slurping sound whenever i revved before i added coolant haha.

FrostySol

right, so check the filter to make sure it's not dirty, it happens over time

civickid03

are you familiar where the airbox is on my car? Before or after the resonator? AFter right?