Re: Nasty Idle Question

[Colin <cwass99@home.com>]

Hi,
     Yeah, they were replaced along with the seats when I did the head about 3
months back.  There's a post from a little later and different thread that
looks really promising (aux air regulator and hose) as well as the comments
about the control pressure (warm up) regulator.  
     Thanks to everyone who responded :)  I'll let you know which
(if any) of the suggested fixes did it after the week-end.  I won't fiddle with
that until after I've finished replacing the drive axles.  One is going away
because it's cheap and less time consuming to replace the whole axle rather
than do just the boots (for some reason the left outer just eats the damn
things).  The other is part of "lessons learned" while trying to do the ball
joint on the right hand side.  Over extended the inner cv.  The only good news
is the replacements cost less than $90 Cdn (which is what, about $8 USD? :)
each.
     I'll say it again...I'm new here, but I love it already :)


Cheers,
Colin


On 16-Oct-01 Robert piwonka wrote:
> Have you replacced the injector o-rings?  it has been my theory that if your
> injector o-rings are bad you will have more cold start problems because the
> rings are all brittle and don't seal creating a vacum leak when cold, but
> after thet get warm they seal and then your idle is better.
> 
> something to consider.
> 
> Robert Piwonka
> ----- Original Message -----
> From: "Colin" <cwass99@home.com>
> To: <scirocco-l@scirocco.org>
> Sent: Monday, October 15, 2001 8:22 PM
> Subject: Nasty Idle Question
> 
>> Hi,
>>      I'm quite new to this list, but I searched the archive using every
>> combination of words that seemed to fit and had no good hits.
>> First the car:
>>
>> 87 8v just over 200k
>> head completely rebuilt, polished and decked
>> stock cam
>> 4 into 1 header (Pacesetter)
>> 2" piping all the way back, through a high-flow cat and Dynomax muffler
>> K&N Filter
>> expanded inlet (no swiss cheese, though)
>> stock throttlebody
>> less than 5k on the valve timing belt
>> air conditioner
>> timing about 8 degrees BTDC
>>
>> The problem:
>>
>>      When it first starts on a relatively warm day, it idles like a 20
> year old
>> Ford.  After it warms up for a few minutes, it smooths out and is good.
> On
>> cooler days (like we've been seeing up here recently) it starts not bad,
> but
>> the idle goes lousy again after a couple minutes until the engine gets up
>> towards normal operating temperature.  Yes I put the O2 sensor in, and
> it's
>> fairly new.  Can't find any intermittent vacuum leaks and the header and
>> manifold are snug with good gaskets.
>>
>>      My question is...is the lousy idle when cold something I have to live
>> with, or can I smooth it out, even a little?  I expected it to roughen out
> a
>> bit with the head and exhaust, but it's really severe.  The idle bobs
> between
>> less than 100 and about 500 (it could be worse, I've got the warm, smooth
> idle
>> at 1100).  I think it should be something I can resolve, but I'm out of
> ideas
>> on what to poke at next.  Maybe the fuel pump?  I replaced the filter
> about 2
>> months ago and that didn't help.
>>
>>      There's more about the car (you don't want to know how much I hate
>> balljoints...) including suspension and such, but that doesn't really
> apply to
>> the question at hand.  Thanks for any responses.
>>
>> Cheers,
>> Colin
>>
>>
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