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02-15-2010, 04:41 PM
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#1 |
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Registered User
Join Date: Aug 2002
Location: Santa Fe NM
Posts: 393
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Need you'r thoughts
I bought a 89 gmc Suburban 5,7 700r4 4x4. The problem is my oil pressure it seems low it moves to 15 then will drop to 0 step on the gas and it picks up pressure to 30.Is this normalfor the trucks? I changed the oil filter and oil to 10w30 chevron with ac delco filter. while down there i noticed it has a oil cooler is this factory or did the po install
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68 GMC-Stripshow 70 Chevy Monte Carlo 72 Chevy Monte Carlo LOLO 72 Chevy Suburban Blurban 74 Vw Bug 78 Chevy k10 lwb 78 Chevy k10 swb 03 Cadillac Escalade-Duecesix 84 Cadillac Coupe Deville DeElegance   B.O. A Lifestyle Money Cant Buy! Win,Lose, or Tie I'm a Raider till i die |
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02-25-2010, 10:52 PM
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#2 |
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Registered User
Join Date: Sep 2007
Location: Austin, Tx
Posts: 50
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Re: Need you'r thoughts
check the oil pressure sender and the connection if it is good then see if you really have oil pressure. put a mechanical gage on it. you may be able to get a loaner from the parts store. if you have oil pressure then try changing the sender. if not start looking thinking oil pump or you have worn bearing on the main bearings.
ken
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truck junkie |
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02-26-2010, 01:29 AM
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#3 |
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I have car A.D.D.
Join Date: Feb 2009
Location: Greeley, Northern Colorado
Posts: 4,147
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Re: Need you'r thoughts
Is it possible that you are not putting enough oil in it? With the oil cooler, it will need more oil than normal.
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-Gerald Building vehicles in memory of the first "car guy" I ever knew, my Grandpa. Bob Dunham 1935-2009. Rest in peace. 61 GMC Suburban SOLD The 86 build thread SOLD Are you a Colorado member?Click here. |
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02-26-2010, 10:40 PM
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#4 | |
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Registered User
Join Date: Sep 2007
Location: Austin, Tx
Posts: 50
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Re: Need you'r thoughts
Quote:
ken
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truck junkie |
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02-27-2010, 01:49 AM
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#5 |
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I have car A.D.D.
Join Date: Feb 2009
Location: Greeley, Northern Colorado
Posts: 4,147
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Re: Need you'r thoughts
Of course it is full if the dipstick shows full, but this has not been stated yet. Also, it could still be running well even if a little low on oil. I am only trying to point out something that may not have been thought of, to help diagnose the issue.
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-Gerald Building vehicles in memory of the first "car guy" I ever knew, my Grandpa. Bob Dunham 1935-2009. Rest in peace. 61 GMC Suburban SOLD The 86 build thread SOLD Are you a Colorado member?Click here. |
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02-27-2010, 07:05 PM
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#6 |
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Registered User
Join Date: Feb 2010
Location: sidney iowa
Posts: 62
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Re: Need you'r thoughts
does it have alot of miles on it ? when the crank and rod and main bearings have alot of wear your oil pressure will drop and pick up with rpm .
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02-28-2010, 12:50 AM
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#7 |
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Registered User
Join Date: Aug 2002
Location: Santa Fe NM
Posts: 393
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Re: Need you'r thoughts
I did find a leak it has 128000 miles
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68 GMC-Stripshow 70 Chevy Monte Carlo 72 Chevy Monte Carlo LOLO 72 Chevy Suburban Blurban 74 Vw Bug 78 Chevy k10 lwb 78 Chevy k10 swb 03 Cadillac Escalade-Duecesix 84 Cadillac Coupe Deville DeElegance B.O. A Lifestyle Money Cant Buy! Win,Lose, or Tie I'm a Raider till i die |
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02-28-2010, 05:16 PM
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#8 |
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Registered User
Join Date: Dec 2008
Location: Washington, MO
Posts: 643
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Re: Need you'r thoughts
Start with changing the sender.. see if that helps.
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