Quite recently, there was a street flood at my school while i was taking an exam. My 98 hatch was flooded an now has an erratic idle. Before the flood, my hatch had an erratic idle only when i turned on the air conditioner. Now, it has the issue all the time. The idle is much higher now; it continuously climbs up from 2000 to 2500 rpm and then goes back down. Does anyone know what the problem might be? You might also want to know that the level of water was up to my seats. The hatch did start a few days later.

 

bump for some help

 

bump cause my buddy has the same problem!

 

Check your FITV and/or IACV

 

From what i understand it can be these problems..
-IACV
-FITV
-Air in coolant lines
-Vacuum Leak

Try out those cheap easy fixes first before you get into anything more expensive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">Check your FITV and/or IACV</TD></TR></TABLE>
we cleaned the iacv because someone told us that it might be that. still did it. i also heard that the valves could need a adjustment?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00 Em1 &raquo;</TD></TR><TR><TD CLASS="quote">
we cleaned the iacv because someone told us that it might be that. still did it. i also heard that the valves could need a adjustment?</TD></TR></TABLE>
Eh, I've heard the valve noises today matt..but i really dont think its causing my idle. By the way tomorrow night me and matt are busting our asses all night,even if it takes until dawn to get my idle calmed down.

 

all nighters ftw!

 

Ehhh..10 bucks says the FITV does it and were done within 15 minutes.

 

I put my money on vac leak, use wd-40 or propane around all lines, gaskets and vacuums, if it revs, there's your leak, if not, check everything that everyone else listed, common solutions right there.

 

Yep fixed. Fitv was loose as hell. Idles normal

 

what's FITV? fuel intake throttle valve?

 

Fast idle thermal valve located underneath the throttle body.

 

here...this might help
https://honda-tech.com/zerothread?id=558236

80% of the questions asked are in the FAQ's on top ^...(just let you know)