DC5 Rough idle

Incredibili

New Member
Messages
1
Hi,

I've had a look through the plethora of threads on this site and tried quite a few remedies for fixing it. The IACV seemed to be the fault that everyone pointed towards, so I cleaned it out. No avail, then I had a look at the gaskets and found they were looking worse for wear so I opted to swap the gaskets, once again no luck(Throttle body and TPS, TPS was adjusted to the correct voltage). I then thought that the IACV may just be totally done so I bought a new genuine Honda IACV and fitted it tonight and still nothing, it hunts in idle.

A couple of things to note:
  1. It does it more prominently when using any electrical component such as windows.
  2. On start up from cold it will idle at 3000rpm, then slowly drop.
  3. It seems to be taking longer to warm up than previous.
It drives fine, once its moving pulls great and no audible misfires, or anything out of the ordinary, and pulls all the way to redline with no bother.

I do apologise if this is like a broken record on the forum, I'm just running out of ideas.

Thanks.
 
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