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Metal Guru
Join Date: May 2001
Location: Beverly Hills, Michigan
Posts: 2,526
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Quote:
Originally Posted by Compulsive
Found this:
Before you decide to replace your fuel pump, make sure that your fuel pump relay is functioning properly. Also be sure to check to that your DME relay is working properly.
Fuel Pump/DME Relay, 911 Carrera 2/4 (1989-98), 911 Turbo (1991-98), 993-615-227-00-M76 $25.00
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Looks like you got some bad info.
There are no CIS applications that utilize a DME relay.
There is a single pole relay in the fuse box for the pumps (R61). The pumps are triggered through the Turbo control unit under the driver's seat when ignition is energized and a speed signal is received from the sensor at the flywheel.
On the normally aspirated cars this position would contain the DME relay, which is a dual pole relay and energizes the ECM, injectors and fuel pumps, among other things (source: Bentley "Technical Data Without Guesswork" and "Porsche 964 Enthusiasts Companion").
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Paul B.
'91 964 3.3 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, H&R Coilovers, ESB spring plates- 210 lb
Last edited by 911nut; 12-27-2010 at 06:50 AM..
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