NetNews Usenet Archive 1992 #16/NN_1992_16.iso/spool/rec/autos/tech/10108

Internet Message Format | 1992-07-25 | 1.6 KB

Path: sparky!uunet!olivea!apple!news.oc.com!mercury.unt.edu!PC-70062.lis.unt.edu!barkerb
From: [e-mail] (BOB BARKER)
Newsgroups: rec.autos.tech
Subject: MR2 Idle Problems
Message-ID: <[e-mail]>
Date: 24 Jul 92 18:38:29 GMT
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I have an '88 MR2 (naturally aspirated), stock except for a TRD (nee HKS)
muffler system (hi-flow muffler with resonator replacing the cat. converter)
and a K & N air filter.  The problem that I continue to have is the the idle
is usually rough and unsteady and, at speed, I am getting a lot of
detonation on acceleration, but not all the time.  I now have 64,000 miles
on the car and had the timing belt replaced at 55,000 and the whole thing
re-timed with little lasting change in performance.  The car will act as
though it is missing below 1000 rpm but seems to smooth out above that
somewhat.  I would expect a rough idle if the car was cammed accordingly,
but it is stock with the exception of the items it previously mentioned.  I
am confused and frustrated.  I have changed plugs up and down in the heat
range to try to cure the problem, changed plug leads, air filter, etc,
etc..  I even talked to the good folks at TRD to see if the addition of the
free breathing gear I put on there would have an effect on the flow sensor
and the mixture computer.  They said it would not affect anything
appreciably.  Ergo, I am back at square one.  HELP!!  Any ideas would be
greatly appreciated.

Thanks in advance,

Bob Barker
INTERNET [e-mail]