FUEL SENDING UNIT

Tiny
BIGGS
  • MEMBER
  • 1993 BUICK ROADMASTER
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 225,000 MILES
If I suspect a bad sending unit can I just unplug it as it has a separate plug to the fuel pump, will my run and by unplugging the sender and it fixes the stalling problem then I would know its the sender and not the pump that is giving me the stalling out problems, will this work for testing?
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Monday, March 27th, 2017 AT 11:05 PM

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Tiny
HMAC300
  • EXPERT
No it also connects the pump. check fuel pressure with a gauge auto parts rent it. if you are getting hesitation a gauge will not cause the problem. pressure should be 41-47 psi minimum see link
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, March 28th, 2017 AT 6:23 AM

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