My 99 civic ex started misfiring the other day. I gave it a tune up in the beginning of the summer. I re changed the plugs, cap & rotor. But it still idels really low and sounds like it is going to bog out when I put it in drive. Any ideas?
Hi there, it could be several different things try these -check the idol air control valve first. try taking off with a\c going and with the a\c off and see if there a differance, if there is, i'd definatly have it checked or replaced. another idea is have the catalitic converter checked, if its clogged you would have bad acceleration,wont idol right, you can check yourself with a vaccum gauge, just connect it to the service port or where the pcv valve connects to the intake and crank up the car and watch the gauge, when you accelerate the vaccum will decrease and let off the accelerator, then watch the guage if it comes back to vaccum very quickly your catalitic converter is good, and if comes back slowly than you have a problem, its clogged
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