Engine revving up and down from a cold start.
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From: TX
Engine revving up and down from a cold start.
1997 Honda Accord DX, 5 speed, non-vtec.
SO for several years I've had the problem where I start my car up cold and it idles up and down for about 2 minutes on it's own, then levels off. Well, this past week, the CEL came on and I pulled a code P0505 Idle Control System Malfunction. I don't know if what I mentioned is anything related to this or not, maybe you lot can help?
I've searched around the internet and I've seen that some mostly say it's a clogged IAC valve, and you can clean it. Others say a vacuum leak. My question is, when the CEL comes on for this, what "typically" is the cause of the problem and what is the solution? I figured you lads might know. Thanks!
SO for several years I've had the problem where I start my car up cold and it idles up and down for about 2 minutes on it's own, then levels off. Well, this past week, the CEL came on and I pulled a code P0505 Idle Control System Malfunction. I don't know if what I mentioned is anything related to this or not, maybe you lot can help?
I've searched around the internet and I've seen that some mostly say it's a clogged IAC valve, and you can clean it. Others say a vacuum leak. My question is, when the CEL comes on for this, what "typically" is the cause of the problem and what is the solution? I figured you lads might know. Thanks!
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Re: Engine revving up and down from a cold start. (Hammer01)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hammer01 »</TD></TR><TR><TD CLASS="quote">... some mostly say it's a clogged IAC valve, and you can clean it. Others say a vacuum leak...</TD></TR></TABLE>Because ether one can cause that, and not everyone's car screws up the same way...
Look for vacuum leaks & fix em.
Make sure you remove ALL air from cooling system.
IAC valve - clean it.
FIT valve - clean it; maybe remove cover see if its guts are loose.
Look for vacuum leaks & fix em.
Make sure you remove ALL air from cooling system.
IAC valve - clean it.
FIT valve - clean it; maybe remove cover see if its guts are loose.
Thread Starter
* B A N N E D *
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From: TX
Re: Engine revving up and down from a cold start. (JimBlake)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake »</TD></TR><TR><TD CLASS="quote">Because ether one can cause that, and not everyone's car screws up the same way...
Look for vacuum leaks & fix em.
Make sure you remove ALL air from cooling system.
IAC valve - clean it.
FIT valve - clean it; maybe remove cover see if its guts are loose.
</TD></TR></TABLE>
On the FIT, are you talking about that think that has two slots on it for tightening?
Look for vacuum leaks & fix em.
Make sure you remove ALL air from cooling system.
IAC valve - clean it.
FIT valve - clean it; maybe remove cover see if its guts are loose.
</TD></TR></TABLE>
On the FIT, are you talking about that think that has two slots on it for tightening?
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Re: Engine revving up and down from a cold start. (Hammer01)
It's #14, I think you take off the round cover on the end & there's something inside that can work loose.
Look around here for a procedure with photos. I haven't had to do this one myself, that's why I'm kinda vague.
Look around here for a procedure with photos. I haven't had to do this one myself, that's why I'm kinda vague.
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From: Fayettenam, Ar, US
Re: Engine revving up and down from a cold start. (Homesickelian)
Well you little ThreadJacker. LOL
If my old memory is correct that is a bracket that has a wire harness clip going into it from under the IAC.
If my old memory is correct that is a bracket that has a wire harness clip going into it from under the IAC.
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