Q: Oil pressure goes to 0 after 1 minute from start up

asked by on

When I turn on the truck on for a minute from start up my oil pressure goes to 0 but then when I push the gas it goes to 35 then when the engine is hot the gauge stays at 20 but when I hit the gas it goes to 35. I wanna know exactly what this issue is before talking to a mechanic in person

My car has 265000 miles.
My car has an automatic transmission.

The engine specifications are 6 psi below 1000 rpms. It will go up 18 psi at 2000 rpm and 24 psi at 4000 rpm. The instrument panel will illuminate the Low Oil Pressure Light if the pressure is low from the signal from the oil pressure sensor.

I would recommend having the oil pressure tested to make sure you are not going to 0 psi at idle. The first thing to do is make sure that the oil is full, but not overfull or lower than a half quart low. If the oil pressure tests okay, then have the sending unit replaced.

The sending unit is on the back of the intake manifold near the firewall. It is pretty hard to get to and you will need an oil sender socket to get it out. If the oil pressure is low then the oil pump or relief valve is causing the problem or you have bad bearings in the engine. The most common problem is the sending unit.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Oil pressure goes to 0 after 1 minute from start up

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: engine codes related

Hey there. If the codes are cleared with a scanner, check to see if they return. Maybe the system was serviced or the battery ground is loose and causing the circuit to break which could cause a lack of communication...

Q: Low idle, Stalls dropping into neutral?

This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...

Q: Fuel Pump Pressure intermittent 2001 Chevy Silverado 1500

Hi there - you have a failed or leaking fuel system check valve. This valve is designed to maintain low, positive pressure in the fuel system. This allows faster starts first thing in the morning, requiring the fuel pump to...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.