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As the subject says my friends 94 N/A 850 will stall intermittently even with a new main fuel pump.. If you wait a minute or two it will start right up..I thought it was a dying fuel pump but after installing a new one it still happens but not as often ...Thanks in advance
 

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Have you checked the fuel filter? My 850 had the same issue, and it turned out to be a bad quality fuel filter replaced about 2 years ago. Try an OEM Bosch fuel filter, mine was around $15.
 

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Check fuel filter as suggested and the fuel pump relay. When it stalls, see if there is any fuel getting to the injectors.....
 
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