Does the check engine light or any codes come up with the O2 sensor
disconnected?
Chris
93 V8 4x4
-----Original Message-----
From: JT McBride <mcbride@abac.com>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Friday, March 26, 1999 11:22 AM
Subject: Re: DML: RE: Re: RE: 24# Injectors?
>Chris,
>I cant tell you what it will do on your truck, it will vary depending on
the
>resto of your mods... By adjusting the fuel pressure (higher) you can
>increase the amount of fuel injected beyond the normal amount per fixed
>injector pulse width. Your O2 sensors will know this and attempt to reduce
>the pulse width regardless, so its really a balancing act between giving
the
>engine more fuel and whether the engine needs more fuel. If your running a
>stock TB and exhaust, then your stock injectors should be AOK as well as
>stock fuel pressure setting. If you have a free flow exhaust and/or big
TB,
>camshaft, ported heads, etc. then you may want more fuel. BUT, I
personally
>cant say how much, what pressure or anything since I havnt played with fuel
>pressure (yet)... Anyone else out there??
>BKB
>
Just thought IŽd point out that there IS a way around this.
Disconnect the O2 sensor.
At least on the older, pre-OBD3 computers, the mileage hit isnŽt too bad.
The engine runs a little on the rich side, per pre-programmed fuel map
(rpm, baro pressure, and temp the only inputs).
On the post-OBD3 computers, youŽd have to disable both pre- and post-cat O2
sensors, or maybe just the pre-cat sensor. Dunno.
WhoŽs going to be the first to try this on an OBD3 Dak?
Jim
93 4x4 CC V8
O2 sensor unplugged for the past 10k...
PS I realized this was okay after finding out my O2 sensor leads had been
sheared off by the oafs at AAMCO the last time they worked on my tranny.
This after a 3000 mile trip to Montana and back towing a car trailer. Power
on hills was down, mileage off about 2 mpg overall.
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