engine shutting down while driving

1997 GMC SAVANA
204,000 MILES • 5.0L • V8 • RWD • AUTOMATIC
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JACKDCALHOUN
  • MEMBER
  • 2 POSTS
van will hesitate/stop at intersections appears rpm is dropping .At INTERSTATE SPEEDS it will sometimes just shut off all gauges light up if I floor it the van will refire & drive fine for 10 more miles. Sometimes I have to put van in neutral & restart going 70 MPH. When van shuts down there is a heavy shutter effect like running over some 2 -3 pieces of wood?
Mar 24, 2016 at 11:40 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
scan for codes and check fuel pressure with agauge auto parts rent gauge shold be 60 66 psi key on only if lower pump may be bad
Mar 25, 2016 at 12:15 AM
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JACKDCALHOUN
  • MEMBER
  • 2 POSTS
I have had the codes scanned only shows a oxygen sensor? bad in the catalytic converter/ exhaust. Could the fuel filter be my problem? I can hear the fuel pump come on when I prepare to start the motor.
Mar 25, 2016 at 3:42 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
what is pressure until you know that and give me the code you got I can't do much for you
Mar 25, 2016 at 3:53 AM
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