Oil Pressure Drop...wtf

BBW808

BBW808

New member
So a friends Ty I've done a lot of work to had an oil pressure scare yesterday. Truck has been driving perfect. Smooth and tight. (or as much as a syty can be), he was coming home from work and check guages light flickered and he saw the oil pressure drop to zero. He pulls over and goes to shut it down...and light is off, pressure is normal. He stops, looks it over, sees no oil drips or anything, starts it back up and drive it home. I look it over, run it, pressure is fine and normal.

WTF? Any insights?
 
Ty#365

Ty#365

BOOST LAUNCH KING
Re: Oil Pressure Drop...wtf

Sounds like it might be a issue with the oil pressure sending unit or the gauge.I would change the oil & filter just to be safe. Keep an eye on it and let us know what happens.
 
Raist103

Raist103

Engine Killer, iPhone Killer, Lawnmower Killer
Re: Oil Pressure Drop...wtf

dist shaft broke or teeth broke? i would prob say the oil sender though
 
SY-1193

SY-1193

Active member
Re: Oil Pressure Drop...wtf

Change the oil and filter just to be safe. Cut open the oil filter and check for anything out of the ordinary...I.e metal, bearing shavings.
 
BBW808

BBW808

New member
Re: Oil Pressure Drop...wtf

Oil only has 500-700 miles on it. Easy enough to change again.

My initial thoughts was that its probably the sending unit acting up, but figured an extra opinion or 30 wouldn't hurt.

Distributor shaft.... should also affect running, I would think. Unless it broke precisely below the cam gear. And even then it wouldn't come back to making pressure again.....
 
WyoSyclone

WyoSyclone

Active member
Re: Oil Pressure Drop...wtf

drive down a bumpy road and see if it does it... maybe a broken/cracked pickup tube?
 
Don W.

Don W.

Stab it and steer it
Re: Oil Pressure Drop...wtf

Mech. gauge is the way to go. I pull mine from the fitting just above the oil filter adapter. You may have to pull the wheel well but it's still easier that dealing with the factory sender location.
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Oil Pressure Drop...wtf

Only times I have had this problem was when my pick up tube fell off. Drain the oil and stick something in there to see if it is laying in the pan.
 
asrnj77

asrnj77

..hard to swallow
Re: Oil Pressure Drop...wtf

Not trying to hijack the thread but I have a similar issue. Typically my oil gauge stays at the bottom and doesn't rise. I changed the sending unit to no avail and there are no leaks and the truck doesn't burn oil. However, every once in a while the gauge will go to about the halfway point and I'm convinced that the boost comes on quicker and the truck is faster when the gauge is working. Is this possible? Where do I go from here?
 
BBW808

BBW808

New member
Re: Oil Pressure Drop...wtf

Thanks for all the input guys. Except for that one occurance, that press has never dropped to 0 again. The guauge has a very coarse movement, and after looking everything over, its either the guage or sending unit. Will be replaceing with a stand alone guage in the pillar. Thanks guys.
 
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