Low Oil Presure
Thread Starter
4th Gear
Joined: Jun 2004
Posts: 4
Likes: 0
From: Wylie TX
Low Oil Presure
I have a C5 and about 2 weeks ago I changed the Oil. Normaly at Idle it seems to run at about 38psi. Yesterday the Engine light came on at about 70 MPH and the Presure was at 38. When I pulled over and was back to an idle it was down to 21psi. I checked the oil level and it is in the middle between full and low on the dip stick. When I went to work this morning with the car cold idle was back to 38psi at idle. I work 30 min from home and when I got to work at idle it had dropped back to 25psi.
Any Ideas what I should check first. I have a little over 84000 miles on it and I run the Mobiel 1 filter and 5/30 Mobiel synthetic oil.
Any Ideas what I should check first. I have a little over 84000 miles on it and I run the Mobiel 1 filter and 5/30 Mobiel synthetic oil.
Instructor
Joined: Apr 2005
Posts: 241
Likes: 6
From: Arlington Texas
I buy cars at auction. I had a jeep that acted the way you describe your C5. It would drop oil pressure after running a while. It turned out to be a defective oil filter. The filter would collapse and pressure would decrease. It's worth slapping a new filter on and checking.
Safety Car
Joined: Jan 2005
Posts: 3,896
Likes: 26
From: Manchester - Political correctness is tyranny with manners.
Originally Posted by ekuhn
I have a C5 and about 2 weeks ago I changed the Oil. Normaly at Idle it seems to run at about 38psi. Yesterday the Engine light came on at about 70 MPH and the Presure was at 38. When I pulled over and was back to an idle it was down to 21psi. I checked the oil level and it is in the middle between full and low on the dip stick. When I went to work this morning with the car cold idle was back to 38psi at idle. I work 30 min from home and when I got to work at idle it had dropped back to 25psi.
Any Ideas what I should check first. I have a little over 84000 miles on it and I run the Mobiel 1 filter and 5/30 Mobiel synthetic oil.
Any Ideas what I should check first. I have a little over 84000 miles on it and I run the Mobiel 1 filter and 5/30 Mobiel synthetic oil.
Last edited by DidntSettle98; May 13, 2005 at 09:41 AM.
