Answer
Mar 20, 2023 - 04:08 AM
Your Tahoe might be stalling because of low oil pressure. Even though you just changed your oil, it's possible there's an issue with the oil pump or oil pressure sensor. If the oil pressure drops too low, it can cause the engine to stall.
Might also be because of a vacuum leak. When you replaced the air intake manifold gasket, it's possible you created a vacuum leak. This can cause the engine to run poorly and stall.
Moreover, consider electrical issues, too. If there's a problem with the wiring or connections for the alternator, spark plugs, or wires, it can definitely cause the engine to also stall.
Now, you mentioned your coolant sensor is reading hot but the engine is actually cold. This might be due to an issue with the sensor itself or the wiring leading to it. Alternatively, there could be a problem with the thermostat or radiator that's causing the engine to overheat.
That said, you can try the following to resolve this issue:
1. Check the oil pressure using a mechanical gauge to verify that it is within the recommended range.
2. Verify that the coolant level is correct and that there are no leaks in the cooling system. If the coolant sensor continues to give incorrect readings, it may need to be replaced.
3. Inspect the air intake manifold gasket and surrounding components to make sure there are no leaks or other issues.
4. Check all electrical connections and wiring for the alternator, spark plugs, and wires to ensure they are secure and functioning correctly.
If you're unable to diagnose or fix the issue on your own, it may be best to take your ride to a mechanic for a more thorough inspection and repair.
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