Hi guys,

I have a 1998 Civic Si, after the car warms up, the rpms drop to 300 when I'm at a light or when I slow down. The rpms than climbs back to 750 after a few seconds. I've just changed the plugs and wires but I've had the problem before this was done. Any suggestions?


Modified by pacespeed at 12:29 PM 5/30/2008


Modified by pacespeed at 12:30 PM 5/30/2008

 

Alot of people have been having idle problems lately. Most common culprit is the IACV... idle air control valve. Type IACV in the search box and look at all the people who have posted on here who have had the same problem and how they fixed it. Most likely just needs to be cleaned. Easy fix if so. Hope this helps.

 

They made '98 Si's?

I thought Si's were only 99-00...:who knows:

 

Thats the same thing I was thinking... Si's ARE only 99-00... in the US atleast. Maybe he means a wsap or something.

 

'98 Si Coupe...thanks

 

98si coupe is a canadian spec !! in other words us spec civic ex!!

 

I cleaned out the IACV and it work. The idle needle is exactly where it should be. Thanks!

 

I want an idle needle

 

Glad it worked out for you - I had the same problem and cleaning the IACV fixed it like a charm.