TBI FUEL PRESSURE SENSOR

  • Tiny
  • vern1939
  • 1991 Pontiac Sunbird
  • 4 CYL
  • FWD
  • automatic
  • 180,000 miles

I amhaving trouble with flooding TBI carb. Bottom is covered with raw fuel.
checked injector with ohm meter ok. Getting 12v to injector when key on.
dont see pulses to injector.
is my fuel pressure sensor on side of carb related? I get 6v on one pin of sensor.

needing help.

thanks Vern (know what I mean)

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Wednesday, November 17th, 2010 AT 11:07 PM

8 Replies

  • Tiny
  • rasmataz
  • Member

No injection pulses check the injector ground driver circuit on the computer-fuel pressure regulator leaking/fuel metering body-

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Wednesday, November 17th, 2010 AT 11:10 PM
  • Tiny
  • vern1939
  • Member

I need a new pressure regulator probably huh?
Will get one and put it in to seee how itgoes.
Thank you

Vern

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Friday, November 19th, 2010 AT 11:00 AM
  • Tiny
  • vern1939
  • Member

Installed a throttle body fuel sensor

still flooding

will check voltages

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Saturday, November 20th, 2010 AT 5:10 PM
  • Tiny
  • wutsupy
  • Member

Ahhh it could be a broken o ring on injector just something to check

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Saturday, November 20th, 2010 AT 8:33 PM
  • Tiny
  • wutsupy
  • Member

It could be a broken o ring on injector. Just a easy thing to check

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Saturday, November 20th, 2010 AT 8:35 PM
  • Tiny
  • vern1939
  • Member

Will check again "OHHH" ring (; ) again, looked good first examination.

Still looking for illustration. Thanks whats up.

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Sunday, November 21st, 2010 AT 1:47 PM
  • Tiny
  • vern1939
  • Member

Hey rasmataz, where is the driver and how do I check it? Voltage to be seen, etc.

Thanks vern1939

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Monday, November 22nd, 2010 AT 1:47 PM
  • Tiny
  • vern1939
  • Member

Wow, changed ohh rings, gas everyplace

voltage to injector 12v (key onl only) g etting sprayed iwth gas
voltage to tbi sensor (new one) key on 6 vol at number two pin *left most pin when viewed from tnd of wires.

Sensor pins 1
2 3
HHHHHHHHHEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPP

THANKS VERN1939

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Monday, November 22nd, 2010 AT 7:37 PM

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