Miata Mailing List: February 1994, Message #22
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   From: wfreeman@acca.nmsu.edu (Bill Freeman)
Subject: Idle Problem
   Date: Tue, 1 Feb 1994 21:31:05 -0500

Hi folks, I've got a co-worker that has a 91 Miata he calls a lemon. 
Apparently he's had quite a few problems since he bought it new. His
current problem is that his engine drops to about 250 RPM and recovers when
stopping with the clutch in.  This is an intermittant problem that
generally happens when the engine is warm.

We're kind of captive here in Las Cruces NM for Mazda dealers.  Here's a
chronology of the work the dealer's done to date:

7/17/93  --  tightened air tube
             set idle

11/9/93  --  re-gap spark plugs
             #4 plug loose
             oil on plug wire -- cleaned and reinstalled

12/17/93  -- replaced ISC valve and gasket

1/13/94  --  adjusted idle from 750 to 850

Each of these has corrected the problem for a while.  Anyone out there have
similar problems or have suggestions on what to do?  I think it might need
new wires.  By the way, the mileage is about 34000.

I've got a 93 with about 20000 on it and haven't had a lick of problem with
it.  His problems include having the carpets replaced due to them pulling
out from the sides.  He's even had his computer module replaced in 91. 
Can't say he's very happy with his car.

Any response is appreciated.

TIA
  Bill

Bill Freeman
wfreeman@acca.nmsu.edu