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Re: 91-900 fuel pump issues, not getting electrical power Posted by Bernie [Email] (#1501) [Profile/Gallery] (more from Bernie) on Thu, 31 Dec 2020 15:14:39 In Reply to: 91-900 fuel pump issues, not getting electrical power, 91classic [Profile/Gallery] , Thu, 31 Dec 2020 14:35:14 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Hello, Are you getting spark and injector pulses? If you are not no power will be sent to the fuel pump. A quick easy potential fix would be cleaning the 2 grounds on the intake manifold near injector number 4. Next would be to check the crank sensor either behind the crank pully on a non turbo or in the distributor on a turbo. If you have all that you need to check the fuel pump relay and see if it is being grounded on the control side by the fuel injection control unit. If you have a turbo another possible issue could be the pressure transducer that cuts fuel if an overboost condition exists. So start with checking for spark or fuel injector pulses and report back to see what step is next and let us know if it is a turbo or non turbo. Good Luck, Bernie
_______________________________________ George Riggin Specialty Automotive Current Saabs 1993 900 Turbo Conv. 1993 900 Turbo Conv. Auto 2003 9-3 Conv 2004 9-5 Arc Sedan 2005 9-3 SS 4 door 2005 9-3 SS Conv 2007 9-5 Aero Sedan 1986 900 Turbo Conv A few parts cars also
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