help in grant county Indiana

[shane1raider]

I'm a new 6.5td owner in a 99 suburban. I love this awesome vehicle. How ever it's got some weird oil gauge thing going on. If I'm on the gas psi is 40, off the gas pso drops to half, step on the brake psi drops below the orange line. I did change the OPS after reading a lot on this forum. But no luck same problem. I'm looking for some one close by who knows what their doing to check it out for me. Any help would be awesome. Thanks

[Dvldog8793]

Howdy
Are the results the same if it is in park?
Same results for driving and then putting it in neutral?
One thing to try, install a mechanical gauge and see what the oil pressure really is.

[shane1raider]

Results are the same, also where would do I hook the mechanical gauge up at? Sorry still finding my way around this motor. Thanks for the help.