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Registered
Join Date: Sep 2007
Posts: 15
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question about my 944 fuel pump
hiiii everyone i have a porsche 944 from 86 my question is the fuel pump start to work when you open the swisch orrr when you turn the key to start
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12-19-2007, 08:16 PM
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Nobody Special
Join Date: Jul 2003
Location: NorCal
Posts: 522
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It only engages the fuel pump in the 'start' position.
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86 - 951 - Garrett dbb T3/T4R/Tial/Maxtronic -SOLD 91 - BMW 325 iX AWD, 5-spd Coupe, Lazur Blau Metallic-SOLD 86 - 951-K26/8, daily driver-SOLD 87 - 944S - Another daily driver-SOLD |
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12-19-2007, 08:43 PM
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Registered
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The pump starts to run in the start position until the engine turns over a certain number of RPMs meaning the engine is running. The computer knows this through the speed sensor near the flywheel. If you suspect the fuel pump isn't running, then jump past the fuel pump relay using the procedures in Clarks garage. if still no fuel pressure start checking voltage at the fuel pump. Usually a DME relay that causes the fuel pump to not start when it's suppose to...always carry a spare in your glove box...cheaper than a wrecker and good insurance.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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12-19-2007, 08:49 PM
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Registered
Join Date: Sep 2007
Posts: 15
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thanks
thanks brother when i am in the start position there is no voltage back there anyaway I test the fuel pump and it is not working this car was stop for 3 year the the fuel tank was empty i bought the fuel pump and the DME relay i hope is that the problem thanks
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12-20-2007, 05:49 PM
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