rough idle on start up for about 5 seconds.
#1
rough idle on start up for about 5 seconds.
My car is boosted, haven't had any problems yet. Here in WI, it's now the time of the year where it could be 80 one day and 30 the next. The first time the temp got down to about 40 and i tried starting my car, it had a rough idle for about 5 seconds, then all of the sudden it's like you could feel something kick in and it starts idling normally. It did this on cold start-ups for like a week, and now it does it everytime (even when it's warm outside). By rough idle I mean the car will idle at about 500 rpm and have a deep rumble/vibrate harder than usual. Sometimes it helps if I tap on the gas and it fixes the problem immediately, other times I'll tap on the gas and it will still take the few seconds to kick back to normal.
I have one-step colder NGK spark plugs, dsm injectors w/resistor pack, walbro fuel pump. These are the only things I've changed that I think would maybe have something to do with it.
I have one-step colder NGK spark plugs, dsm injectors w/resistor pack, walbro fuel pump. These are the only things I've changed that I think would maybe have something to do with it.
#6
Any CEL?
Might just be a dirty IACV. Try cleaning as detailed in Greddy_Civic's DIY thread.
Other possibilities include a faulty coolant temperature sensor or a little air trapped in the cooling system.
Might just be a dirty IACV. Try cleaning as detailed in Greddy_Civic's DIY thread.
Other possibilities include a faulty coolant temperature sensor or a little air trapped in the cooling system.
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