JoSi

ive been noticing that my car's idle goes to 2000 rpm every morning but then it goes down after like 2 minutes of leaving it running. i check all the vacuum hoses and they're all fine. it only really does it when its cold but it idles fine after its been warmed up. i think my temp sensor on the head might of gone bad. any ideas of what it might be?

JakeSpec

bad IAC valve

ONEFASTJDM

is this for carburated or fuel injected models?

Ltsmith05

Sounds like the motor is just warming up.

ef-hatchcrap

Hondas idle high until they are warm then they will idle down. Its best to let it fully warm up before you drive it.

IamEFinsweet

**** mine does the same thing but at 3000. it's really annoying, i was thinking cus i have a cheap *** OBX free flow cat on it. but thats my deal. I'd also like to know why mine is doing this. i have 1990 LS motor in it btw.

mar778c

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JakeSpec &raquo;</TD></TR><TR><TD CLASS="quote">bad IAC valve</TD></TR></TABLE>

X2 Agreed

SupraRXZ

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ltsmith05 &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like the motor is just warming up.</TD></TR></TABLE>

same happens to me, but I just think of it as the engine warming up, and the idle goes lower as the temp rises

crx_88_si

2k is normal, 3k is not.

IamEFinsweet

yes it is very loud, obnoxious and i'm just ditching the motor anyway.

redsolturbo

2000rpm is pretty normal on pmgfi cars. (especially in cold climates/winter months etc)

my hondas have always started at around 2000-1700 rpm, stayed there for about 30 seconds then slowly brought them selves to idle. basicly your fitv valve is open and as the coolant temp raises the valve begins to close lowering your idle.

3000 rpm is NOT normal though

zccr-xsi

mine does same thing on start up idles at 2k then slowly goes down as it warms up.