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2001 GMC Sonoma 2001 GMC Sonoma No oil pressure and valve n

Tiny
NORTHRICHMONDBUCKETS
  • MEMBER
  • 2001 GMC SONOMA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 115,000 MILES
Its a 2.2 four cylinder. I went to start the truck and it fired right up, but it sounded like a diesel (its gas) or it needed a valve adjustment. I then shut it off and started it again and had a really hard time starting, (I had to put the gas pedal to the floor). I then noticed that it was not registering any oil pressure. The alternator lights on too, but im pretty sure thats an alternator since I already put a battery in it to get it started. My main concern is the oil pressure and the noise. Thanks JP
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Monday, December 7th, 2009 AT 8:38 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,268 POSTS
It sounds like a bad oil pump or plugged pick up screen. THe only way to be sure that you are not getting pressure is to get a manual gauge at the parts store (most will lend or rent them) and unscrew your oil sending unit and screw the manual gauge in. IT will give you an accurate oil pressure reading.

If it has none, shut it down. You will then need to remove the oil pan to check the pick up tube and pump. If you go that far, I would recommend replacing the pump.

I am assuming the oil level is full.

Let me know if you have other questions.

Joe
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Monday, December 7th, 2009 AT 11:25 PM
Tiny
NORTHRICHMONDBUCKETS
  • MEMBER
  • 2 POSTS
Thats what my first guess was, just thought I would ask. Ill be checking it on wed and if no pressure, im dropping the pan. Thanks Ill keep you posted
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Tuesday, December 8th, 2009 AT 12:06 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,268 POSTS
Let me know, and thanks for using 2carpros. Com

Joe
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Wednesday, December 16th, 2009 AT 8:59 PM
Tiny
SERPENTRACER
  • MEMBER
  • 34 POSTS
Don't just imediately drop a oil pan. I've personally seen a few bad oil filters completely block oil flow.
Try putting a new one on first.
One of those filters was a Mobil 1 filter. So this isn't something only cheap filters can do.
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Saturday, December 19th, 2009 AT 6:14 PM

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