No metal in sump, or signs of unusual wear. Oil pressure relief valve was jammed all the way up inside pump. They couldn’t get it out. So they...
Replaced with brand new oil pump. New oil and filter. Engine is running great. Oil pressure @ 675 rpms is 25 psi, running down the highway @1400...
They checked #1 and 4. Said they looked clean. No unusual wear. Saying everything on top end looks clean too. I have to admit, this time around,...
None reported.
Well, pan is off. Pressure relief valve is jammed slap all the way up inside pump and will not come out for nothing. Replacing with brand new oil...
Yes sir, that’s the plan on Monday. Plus, if the filter is totally clogged, it does have a filter bypass valve. We checked it. It seemed in good...
We tried two different new filters with the same result.
Well, the oil pressure suddenly stopped while at shop getting starter replaced. After they started it I noticed red light on the dash. We shut it...
Pulled the oil pressure sensor out today and started engine. Not 1 drop of oil came out the hole. Shop said if that pump was doing anything, at...
Lower end is all brand new about 139,000 miles ago.
Ok. Might be valve in pump then.
Did you see my replies?
We checked the relief spring and plunger on top of filter housing. It seemed fine. But is there a pressure regulator in the pump also??
They put a manual gauge on it, still no oil pressure.
Is it possible for oil pump to just wear out? Oil pressure had been gradually decreasing that last 7 weeks. Pressure came way up significantly...
Hmmm..? Well, I just changed out the on/off cruise switch. That didn’t change anything. So, the brake light switch is what cuts it off when...
2007 T600. Cummins ISX. Yesterday suddenly when leaving shipper, cruise control will not engage. I have replaced the air switch behind dash,...
It’s a parameter code coming across the road relay readout
In the overhead road computer. 06’ ISX Cummins
