2001 Pontiac Bonneville Logo
Posted on Apr 28, 2009
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My 01 bonneville oil pressure gauge is showing 120 and my gas gauge is all over the place

  • Anonymous May 15, 2009

    oil pressure gauge reads 120, check gauge light on

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  • Master 6,784 Answers
  • Posted on Apr 28, 2009
Anonymous
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Joined: Jan 28, 2009
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HI, the oil pressure sending unit may be malfunctioning at this point. this will cause erratic readings. if your oil level is proper and there are no apparent oil leaks, you will need to replace the oil pressure sending unit. this will fix the erratic oil pressure readings.

Concerning the gas gauge. this device also has a sending unit that sends the correct fuel level reading to the gas gauge via wire transfer. this sending unit is located and attached to the fuel pump assembly inside the gas tank. replacing this device will fix this issue as well.

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Oil sending unit bad. Replace.
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