Where to get EEC-IV ECU specs/schematics.

[Jonathan R. Lusky]

Hans Steiner writes:
> 
> On Fri, 20 Oct 1995, Lawrence S. Harris III wrote:
> > > My mechanic just told me that the code 41(always lean) code that I am 
> > > getting is caused by a bad computer.  And a "rebuilt" one costs $225.  So 
> > 
> > Sounds like a load of Bull---t to me.  Did your mechanic trace the Oxygen 
> > sensor outout all the way back to the computer?  If you are not getting 
> > any output (0 voltage) from the EGO to the computer, it will result in an 
> > always lean code.  A bad EGO may cause this, or faulty wiring.  This 
> 
> I am pretty sure I trust the mechanic.  I tested the EGO myself and was 
> getting ~0.53V from it.  I disconnected a vacuum line and got ~0.68V fro 
> the EGO.  On top of that, I have tried 4 different EGO's, 2 new ones, and 
> two junkyard ones, and still a code 41.  I have had this code 41 for 
> about a year now and have been trying to trace it for almost as long.

But where are you testing it?  At the conntector on the sensor?  You
need to test it at t the ECM end of the wiring harness to rule out a
wiring problem.  It'd also be a good idea to clean the connector on the
ECM.

-- 
Jonathan R. Lusky                        lusky at knuth.mtsu.edu
http://www.edge.net/~lusky/                 (615) 726-8700
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