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My vehicle shut off while driving

Tiny
TYLOR83
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
When I got home I checked fuel pressure. It’ll build 25psi and when the pump shuts of it immediately drops to 0psi. I was thinking fuel pump but it dropping pressure so fast makes me think it might be something else. Any advice would be appreciated.
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Tuesday, December 17th, 2019 AT 3:21 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

The pressure is extremely low. If there are no leaks, replace the pump. Here are the specs for fuel pressure.

2001 Chevy Truck S10/T10 Blazer 4WD V6-4.3L VIN W
Fuel Pump Pressure
Vehicle Powertrain Management Fuel Delivery and Air Induction Fuel Pump Fuel Pressure Specifications Pressure, Vacuum and Temperature Fuel Pump Pressure
FUEL PUMP PRESSURE
Key On Engine Off. 60-66 psi

If you only have 25, it won't run.

Let me know if you smell raw fuel or see any leaks.

Joe
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Tuesday, December 17th, 2019 AT 8:55 PM

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