Q: My oil pressure switch went out and haven't been able to start it since, what could be the issue? I have since replaced the part.

asked by on

Car just cranks. No turn over and no spark. Please help

My car has 173000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. I recommend checking the fuel pump fuse and especially the fuel pump relay. Make sure you are getting power from the ignition switch to trigger the fuel pump relay. On newer (incl. 2000) GM vehicles, the oil pump switch is a backup electrical path to the fuel pump relay; only coming into play when the fuel pump relay primary path fails. The fuel pump relay may have completely failed at this point. It is also possible that the Pathlock Security system is shutting down the fuel pump for some reason. If the fuel pump fuse and relay check out as working properly, diagnosis of Pathlock issues is next on the diagnostic list, requiring a GM security diagnostic tool. I would recommend having YourMechanic.com diagnose the fuel supply issue, provide an accurate assessment of damage, and estimate the cost of repairs. YourMechanic.com can dispatch a mobile, professional mechanic to your location for diagnosis and repairs. Contact YourMechanic.com to request this inspection and to schedule an appointment.

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. My oil pressure switch went out and haven't been able to start it since, what could be the issue? I have since replaced the part.

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: Antifreeze soaking driver side floor.

Hi there. It is likely that either the evaporator plug is clogged as you've stated, or you might have a heater core coolant leak. If you are experiencing increased engine temperature or overheating at all, it's likely the heater core...

Q: Won't go into gear

Is the car making grinding noises when you try to go into gear? With a new clutch assembly, the problem may be in the hydraulic part of the system. A failed clutch master cylinder may be malfunctioning and where pressure...

Q: How do you know when the thermostat is stuck when the meter is broken?

Hello. If the engine is leaking coolant then the reservoir is always the first part to read low. I usually start by checking for any visual leaks on the ground or on the engine. The most common cause of a...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.