Who has experience with crankshaft sensor and how engine won’t crank on
What is your question?
My engine all of a sudden won’t start and stay on. I did spray test and it starts. Did electrical for spark and it works- starter is ok, no codes reported and left to two situations- crankshaft sensor or fuel pump.. anyone else have this happen
It did start back up for 2 days and even this morning and after I started and shut off it did not crank up again
What makes this problem better or worse?
??
How long has your 2004 Toyota Tacoma had this problem?
RepairPal Certified shops can diagnose and repair your 2004 Toyota Tacoma. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
A faulty crankshaft position sensor can indeed cause starting issues in a vehicle. The crankshaft position sensor is responsible for providing the engine's computer (ECU) with information about the position and speed of the crankshaft. This data is crucial for the ECU to determine the right timing for fuel injection and ignition.
When the crankshaft sensor fails or malfunctions, it can result in a situation where the engine won't crank, or if it does crank, it might not start or stay running. The reason your engine starts with a spray test is because the fuel is being manually introduced, bypassing the need for the crankshaft sensor to provide accurate timing information.
To determine if the crankshaft sensor is the cause of your issue, you can perform some additional checks:
1. Check for Diagnostic Trouble Codes (DTCs): Even if the check engine light is not on, there might be pending or historical fault codes that can be read using an OBD-II scanner.
2. Listen for unusual noises: If the crankshaft position sensor is faulty, you may hear strange noises from the engine during cranking.
3. Check the sensor's electrical connection: Ensure that the sensor's wiring is intact and properly connected.
4. Use a multimeter: You can test the crankshaft sensor's resistance and voltage output with a multimeter to check if it's within the manufacturer's specifications.
If you're not comfortable performing these checks yourself, it's advisable to take your Tacoma to a qualified mechanic who can diagnose the issue more accurately. They can use specialized tools to monitor the sensor's output while cranking the engine and pinpoint the cause of the problem.
Regarding the fuel pump, it's also a potential culprit for a no-start issue. If the fuel pump is not delivering the required fuel pressure to the engine, it won't start or stay running. A mechanic can check the fuel pressure to rule out or confirm the fuel pump as the problem.
In any case, it's essential to address the issue promptly to avoid further complications and potentially more expensive repairs.
