Useless Information

[Rocket Man]

Oil Pressure no longer normal!

There is oil everywhere underneath the truck and it is pooling on the ground now. The oil pressure is low again, holding at about 20 psi while in gear at idle and only going up to about 30 psi at speed like before.

So when it stops raining, will top off the oil and check the pressure again, then call a guy and see when I can the truck up on his lift and have a look around underneath.

What kind of external engine oil leak can cause the oil pressure to drop? Enquiring minds want to know!

Loose oil filter?I really don’t know, but I was thinking if it’s loose and oil isn’t flowing through the bypass valve, just spitballing here. It seems to me that the last thing done to anything is what usually causes the last issue. Hoping for the best, James.

 

[Tonyrodz]

How's the oil pressure sending unit? A guy once had oil leaking out of his, and it was leaking onto the ground.

 

[Charlie207]

How's the oil pressure sending unit? A guy once had oil leaking out of his, and it was leaking onto the ground.

Me, I was that guy. Replaced the oil sender with another new one and did valve cover gaskets to stop the oil from leaking down from the top of the engine. It was still coming out of the rear cover, but I wasn't planning on fixing that.

@swathdiver Did you happen to pull off the VLOM, and check/replace the gaskets that seal the VLOM to the block's AFM towers (or whatever they're called)?

 

[j91z28d1]

my guess would be at the sensor, either threads or middle of the connector, then oil block off plate, last would be filters didn't seal? loose or double gasket?

all things I've seen that would be a easy for fix. Will be interesting what you find.

 

[swathdiver]

Me, I was that guy. Replaced the oil sender with another new one and did valve cover gaskets to stop the oil from leaking down from the top of the engine. It was still coming out of the rear cover, but I wasn't planning on fixing that.

@swathdiver Did you happen to pull off the VLOM, and check/replace the gaskets that seal the VLOM to the block's AFM towers (or whatever they're called)?

The rocker cover gaskets were replaced about 25K miles ago and they are weeping and maybe leaking. I tightened the VLOM bolts but did not pull it and have a looksee underneath. Good idea.

my guess would be at the sensor, either threads or middle of the connector, then oil block off plate, last would be filters didn't seal? loose or double gasket?

all things I've seen that would be a easy for fix. Will be interesting what you find.

Filters are on tight and not leaking, all gaskets accounted for! I am thinking about that oil cooler fitting above the filter though. Replaced it about 5 years ago.

Anyhow, going to put the truck on a lift on Sunday and have a look underneath myself. I'll keep you posted.

I've been running errands all day, didn't get up past 45 mph and one time the oil dropped to about 19 psi in gear at a light but the rest of the day it was normal, mid 20s.

 

[swathdiver]

Well, today did not go as planned! Went out into the country in the morning where my children's classmate set up shop with a lift. Once we got it on the lift, the only leak was the block gasket for the oil cooler. Easy fix.

But let me tell you about what happened before that! Well, the youngsters woke up and were late. They called and I was already out there so I headed off road to exercise the transfer case and differential in 4Hi and 4LO. About 12 miles out in the boonies they called and said their truck broke down on the off-ramp and was blocking traffic. Told them that I was on my way and to send me a pin, which they did. Took a while to get onto pavement but soon did and zig zagged through the back roads to get to them as quickly as possible.

As I pulled up there was a policeman blocking traffic, he held up the cars so I could pull the Yukon in front and get set up. My hook and shackle and tow strap and such are kept in the back. In a minute we were ready to pull, the policeman blocked the road in both directions and I pulled the 7,100 pound Dodge Ram up onto the bridge and off the road. Then we let traffic pass and thin out. The policeman shook our hands and wished us well.

Then I told the Dodge driver to hop back in and I'd tow him the 15 miles to the shop out in the boonies. Off we went and the Yukon didn't care, barely noticed with those 3.73s and E85. Transmission temps hit the 180s only when I was going slow to let traffic pass but was otherwise in the 170s most of the time. Truck stayed in 3rd gear, the last time I towed on E85 she did this, but was fine. Put the truck in 4HI when we went off road and pulled the last 1/4 mile through the dirt to the shop.

To keep tension on the strap, I had the driver slow us down whenever we needed to. All week I've been procrastinating on whether or not to buy a kinetic energy rope for towing, there's been one sitting in a shopping cart since last Monday. Should I buy it tomorrow or will I never need one again? LOL

Airbag light came on while bouncing around off-road. Will check it tomorrow. In 5 days we've pumped 68 gallons of fuel. Back on 93 for a planned tow this week, about 9,500 pounds.