i have a 98 civic DX hatch 5 speed. I went on vacation, car was left and parked on the street for 2 weeks. i came home last night, tried to start the car this morning everything was fine.. but after engine warms up car starts to rev up and down.. wouldn't idle properly~ what's going on now?? 2 weeks ago before i left, car was running fine and everything.. but now it has this stupid rough idle.. any ideas??
someone plz help~!!!!

 

No CEL by any chance?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EL Vap133 &raquo;</TD></TR><TR><TD CLASS="quote">No CEL by any chance? </TD></TR></TABLE>

Nope, no CEL and i tried to reset the ECU but still same thing..
i have no clue what's wrong with my civic now~~ it's pretty much stock except SRI

 

if the idle is jumping up and down and will not stay consistant, check out your IACV. I had a bad one in my old DC2 and it did the same thing, just took a crap on me one day with prior signs of it. g/l

 

is your coolant full?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wheelmanbg &raquo;</TD></TR><TR><TD CLASS="quote">is your coolant full?</TD></TR></TABLE> If it happened out of no where and the car hasn't been driven, It wouldn't be the IACV.

Check your coolant, and bleed the system properly.

 

coolant is full.. i checked it before
i also checked with all the vacumes to see if there is any leak but none..
reset ECU and everything.. dont know what else would it be..
i know it rained for like 8 days while the car was parked outside..
um.. i am gonna go drive it on the HWY a bit and see how it goes..
will keep you guys posted

Thanks for the replies..