Isuzu Npr Questions

2006 NPR Diesel High Idle p0087,p0093 anybody know the fix?
Is it Fuel Pump Pressure Regulator?

according to Mitchell 1 its either pressed on camshaft or parts of timing gear depending on application
Does not show exact location

I am working on a 2002 Isuzu npr tilt cab and have replaced the front brake pads, front calipers, all brake hoses up front, master cylinder, and abs box but after the brakes heat up some during in town driving the front brakes lock up any reason w

I want to know how oil can go into the radiator

1999 isuzu npr diesel - no start, like no fuel
what could be possible faults

1993 isuzu npr 3.9 automatic replaced head transmission now wont go into gear jumped up and down in drivers seat  went in gear for a minute now nothing

2002 isuzu npr check transmission light flashing. Checked all fuses includeing 6 behind the glove box. Driving down the road only goes 40mph. By chance tried turning ignition switch counter clock wise slowly..lost all electrical but if I did as to

2006 isuzu npr hd check engine malfunction light is on what could be the problem