Miata Mailing List: October 1993, Message #205
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   From: Bill Kim 
Subject: Idle Problem
   Date: Wed, 20 Oct 1993 22:02:20 -0400

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