Turbo Esprit Fact Repository

You've loaded an old revision of the document! If you save it, you will create a new version with this data.

====== Vacuum Routing ======

Vacuum routing is slightly different between certain model years (and US/UK models). Most of this is US-centric information.

==== Vacuum Solenoids ====
== Fuel Pressure & Ignition ==

There are a pair of solenoids mounted under the intake plenum for fuel pressure and ignition. Lotus refers to these as part #A910E6634F.

I took some time to test and investigate these solenoids (they are identical parts, but serve two different purposes).

These solenoids are a German Pierburg part (#7.12942.00) they are not necessarily an easy part to find (right now, sourcing one is more than $50 USD each).

I tested the solenoid to see the internal routing when energized and when not. The solenoid switches between connecting the top outlet to the bottom-side outlet when energized, or connecting the bottom center outlet to the bottom-side outlet when NOT energized (polarity doesn't matter).
 
{{:engine:solenoid-diagram.jpeg?400|}}

The least expensive replacement unit is an A/C Solenoid Valve part 1470004 or SW9000. This operates in a similar fashion to the stock unit as long as you set up the vacuum lines properly.

Edit summary

Turbo Esprit Fact Repository

User Tools

Site Tools

Page Tools