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Re: New mystery - completely dead
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Posted by Bernie [Email] (#1501) [Profile/Gallery] (more from Bernie) on Sun, 23 Apr 2023 08:45:54 Share Post by Email
In Reply to: Re: New mystery - completely dead, ursusskandia [Profile/Gallery] , Sun, 23 Apr 2023 08:23:05
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Hello,
So yes the crank signal must be received by Lh to trigger the fuel pump. You will find a 3 pin connector near the oil dipstick tube that goes to the crank sensor behind the crank pully. It sends a signal to the ignition module which then sends it on to the Lh control module. A quick check is unplugging the 3 pin connector and with the key on spike 2 of the pins on the harness side together several times quickly and see if you hear an injector click. If so the hall effect sensor has failed. I can't remember which wires to quickly jump together but I have never harmed one by doing the wrong ones so take turns. Another option is using the TSI socket for a RPM signal. If I remember correctly a led test light will show a signal in the TSI socket. Good Luck, Bernie
_______________________________________
George Riggin Specialty Automotive
Current Saabs
1993 900 Turbo Conv.
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A few parts cars also
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