EGR valves

[thergen at svn.net]

GM has some "linear" egr valves.  It has pintle position feedback
(something like a potentiometer).  It is controlled by a pwm signal (I
don't know the frequency) from the ecm.  One app that used this is a '92
S10 4.3L vin W (not sure about the 4.3L vin Z, and many parts stores don't
even list the vin W).  There is no vacuum assist on this egr valve.

Tom

On Sat, 20 Mar 1999, Robert Harris wrote:

> Does anyone have a good purchasable reference covering late model
> electronically controllable EGR valves among other Smoggy Doo?
> 
> The simple EFI design Dave, myself and a couple of others are working on has
> progressed to the point where because we are perverse, sick, insane,
> illegitimate offspring of female dogs we actually have found a legitimate use
> for EGR in a street EFI.
> 
> We are looking for a reasonably affordable EGR valve that we can modulate and
> varying the flow - either in distinct steps or continuously by hopefully pulse
> width modulation.
> 
> The previous information about the Ford IAC was very helpful and appreciated.
> 
> Thanks in advance.
> 
> 1963 Ford C-600 Prison Bus Conversion "Home"
> 1971 Lincoln Continental 460 "Christine"
> 1972 "Whale" Mustang awaiting transplant
> 1978 Dodge Long Bed Peeek Up "Bundymobile"
> 
> Habaneros - not just for breakfast anymore
>