PCM is relearning your mods after 100 miles.
What's your vacuum at idle and what's the fuel-sync set at?
- Bernd
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of
JAMEPC@aol.com
Sent: Wednesday, June 18, 2003 7:15 PM
To: aol@dakota-truck.net
Subject: RE: DML: O2 code/Fluctuating Idle
My PCM thew the following code: 52 Sustained rich mixture exceeds range
of
control. Also at the same time, the RPM's started fluctuating. At
idle, it
fluctuates 200 RPM and I can feel it hesitate on acceleration. The O2
sensor has
been replaced and it still throws the same code. Below are my specs.
Thanks, James
93 CC, 5.2, Rebuilt engine 30 over, 604 Competition Cams:lift .512
dur@.050
210, 220 / LSA 112, Heads ported/5 angle , 2bbl M1 Intake, Jet Hot
Coated
Thorley Headers, Ported TB, True Duals w/ FM 70's and Cuda Tips, MP PCM,
MP Cast
Valve Covers, MP Cast Air Cleaner, K&N Filter,MP DRT Chain, MSD 8.5mm
wires, MSD
6T, Blaster coil, Underdrive Crank Pulley, APS 46 RH Transmission w/ All
The
Options, MP Torque Converter, Viper Fan, Lowered 2-3. Energy
Suspention body
mounts, A arm bushings & sway bar bushings, 4.10's W/ Dana Spicer Trac
Loc,
Road Master Active Suspention, Doestech Shocks, Front and Rear Anti Sway
Bars,
Cowl Hood, Sir Michales Roll Pan.
Update:
The above problem was resolved when I disconnected the battery to do
some
engine work. The PCM was reset, the code went away and so did the
hesitation and
flutuating RPM's. For some reason, I think it going to come back after
a
couple hundred miles. Any ideas what would cause this
?
Thanks,
James
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