Miata Mailing List: October 1993, Message #206
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   From: suskind@isdev1.melpar.esys.com (Barry A. Suskind)
Subject: Re: Idle Problem
   Date: Thu, 21 Oct 1993 07:01:32 -0400

[Bill Kim ] Writes:
> 
> I have a idle problem that no one seems to be able to solve. I tried to
> post on compuserve with no results and I took the car the the dealer and
> they couldn't find anything wrong.
> 
> The description of the problem is as follows. When the rev's come down to
> idle it goes to about 200rpms and the car almost dies and then it comes
> back up and idles just fine. It does it when the car is warmed up and
> happens whether I'm moving or not. I can get it to do it sitting still by
> just reving the engine, therefore it is not the problem discussed here a
> few months back about partial clutch engagement. It doesn't do it all the
> time , but it has been doing it more and more.
> 
> I have tried to adjust the idle and the dealer claims that the computer
> checks out ok.
> 
> I have a '93 with 10000 miles and timing at 14degrees and stock plugs and
> I run chevron gas. I do have a HKS intake, but it did it even before I put
> it on.
> 
> Has anyone with bad plug wires have a similar problem? could it be a fuel
> filter? Can any one help me? I'm at my wits end here.
> 
> Thanks in advance! :)
> 
> Bill Kim
> 
> 
> 
> 
> 

I would suspect some vacuum leak with one of the small emission hoses
on the car. Could be a small split, crack or other almost invisible problem.


-----  Barry A. Suskind, Information Services, E-Systems Melpar Division -----
----------------  7700 Arlington Blvd, Falls Church, VA 22046 ----------------
----  Internet: suskind@melpar.esys.com ----------- Ma Bell: 703-560-5000 ----

"After all, if it weren't for change, your job would largely consist of making
 sure the corporate abacus rods were adequately greased." -------- John Cleese