[V8] Mystery Wire

[Buchholz, Steven]

... what year car do you have?

If your car is a 1991 it will have Servotronic steering assist ...
basically speed dependent variable assist.  The wiring diagram shows
that the wires connecting to the valve on the steering rack are Green
and Grey/White.  Some folks do not appreciate the extra assist the
system provides at slow speeds, so they disconnect the system ... which
basically sets the assist level to what you would get if you were
driving something like 100MPH.  I prefer the Servotronic, and have it
connected on both my '91s ... 

We're talking about a problem that developed on a car that worked for
you at one time aren't we?  Chances are the wire was disconnected when
you bought the car and it is not at all likely to be related to the
problem that developed on your car.  

I was the one who recommended that you check the fuel pump ... have you
investigated this further?  There are some "output" diagnostics
available that allow you to tell whether or not things like the fuel
injectors are clicking and such.  You might want to try this ... check
out Scott Mockry's site:

	http://www.sjmautotechnik.com/trouble_shooting/ecufv8.html

... look for the section on output tests.  These tests run the fuel pump
as well as other output devices like the fuel injectors and ISV with the
engine stopped so you can hear them work ... or not.  I see Scott's site
does not indicate that the Fuel Pump is activated ... I was pretty sure
that it was supposed to do this ... maybe I'm remembering the MC engine
... I don't see in the service manual that the fuel pump is supposed to
be activated.  

Steve B
San Jose, CA (USA)
> 
> Under the hood of my V8 there is a wire that runs along the driver
side
> frame rail, and plugs into what looks like the steering rack under the
brake
> master cylinder. It contains a green and a white wire. Does anyone
know what
> this is for? I just notices it appears that the PO of my car pinched
it
> between the frame rail and the heat shield on the passenger side. It's
a
> long shot, but could this be part of my no start problem?