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MikeStewart MikeStewart is offline
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Join Date: Jan 2009
Location: Scotland
Posts: 27
Guys I'm begining to query the results of the tests done right back at the start -

" i did make a jumper and the fuel pump is operating. In fact i used the jumper to test flow at the rail. With the jumper in it wouldn't start. I also tried disconnecting 1 injector to test if the FPR was shot and it still didn't start. "

Everything we are seeing is pointing to the DME relay itself. Theres a procedure in Clarks at - http://www.clarks-garage.com/ - select the Garage Shop Manual tab at the left and when it opens scroll down to -

DME Relay

Technical Information and Testing


Try repeating that test as detailled -

"If you suspect the DME relay is bad and you need to move the car, you may install do so by installing an "emergency" jumper across terminals 30, 87, and 87b on the relay / fuse panel. Some folks will tell you to jumper terminals 86, 87, and 87b instead. This allows you to only run the fuel pump, DME, and injectors when the ignition switch is turned on. Seems like a great idea on the surface. However, realize that the wire supplying power from the ignition switch to terminal 86 on the DME relay is a 1.0 mm wire and is only intended to carry enough current to pickup the primary coil on the relay. The wire connected to terminal 30 is a 4.0 mm wire which is designed to carry full current demanded by the fuel pump, DME, and fuel injectors. I strongly recommend using terminal 30 instead of terminal 86 to supply power via the jumper. "

Note the recommendation to use terminal 30 for power.
Old 01-12-2009, 02:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #86 (permalink)