From: img width=12 height=12 border=0 src="http://opi.yahoo.com/online?u=bobc997615&m=g&t=0" alt=""_REMOVE_800376_THIS_@yahoo.com
--- In <a href="/group/cosworthvegas/post?protectID=219233066105193209050199029077192253163098100009128121188190230091025019053061151110147">email@example.com</a>, "Kenneth Rock"
<<a href="/group/cosworthvegas/post?protectID=051056234185056134170082189036209063098032044109209130152">Kenneth.M.Rock@B...</a>> wrote:
> I remembered correctly, but just didn't post fast enough.
> It is interesting that the 140 vega had this fuel cutoff
> fail safe built in, yet the Cosworth did not. I suppose
> the extra engineering within the ECU was not worth the cost.
> Funny they just did not use the existing 140 sensing unit though.
> Perhaps the 2 lead unit was used elsewhere in GM.
> I wonder if it would be feasible to put a switch inline with the
> pump wires to add the fuel cutoff feature. The solution is not
> that simple, however, as one would have to deal with the case where
> the key is turned on and the HP pump is activated breifly to
> pressurize the fuel system, at least for fuel injected cars.
> would run for quite a bit longer with fuel in the bowls. I imagine
> the switch would have to interrupt the ignition in that case.
> Any other thoughts?
If you carefully look at the Vega electrical schematic. It doesn't
take long to see that the Vega & Cosworth front harnesses are not
The interesting thing about the Vega is why it uses a 2 prong sending
(Cosworth uses a single prong)unit. The Vega circuit, thru the
igniton switch, in "start", uses one side of the switch so the fuel
pumps will run with "zero" oil pressure. Once in "run", the circuit
uses the other side (pressure) of the sending unit, to control the
fuel pumps and dash light.
[This is message #10664 by user img width=12 height=12 border=0 src="http://opi.yahoo.com/online?u=bobc997615&m=g&t=0" alt="" on Yahoo! Group Cosworth Vegas: http://groups.yahoo.com/group/cosworthvegas