2nd Generation Specific 1986-1992 Discussion

s5 issues

Old 03-27-2006, 12:24 PM
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anyone seen this? i've got an s5, starts right up and runs great until you let og of the key, and then it shuts off. if you hold the key in start, it stays running and runs good.



i didnt get a chance to really investigate the problem, any ideas thoughts questions etc are welcome.



i havent checked it for codes, as the CE light isnt hooked up yet
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Old 03-27-2006, 02:15 PM
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Ignition switch died?
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Old 03-27-2006, 02:46 PM
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could be, thats on the list.



main relay maybe too? bad ecu?
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Old 03-27-2006, 02:49 PM
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Mine used to be the other way, if you turn too far it acts like a dead battery, nothing happens.



Does the accessory stuff work in the ON position?
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Old 03-27-2006, 03:32 PM
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Fuel pump relay?

AFM?



The fuel pump flows in the start position, not in the "on" or "run" position like some cars. Then there is a switch in the AFM that turns pump on when airflow is detected. In the S4 at least.
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