P1510 trouble code is showing up. Cleaned the idle control valve but it won’t start.
My car has 186540 miles.
My car has an automatic transmission.
When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed. This is all done by the idle air control valve. When the engine RPM drops below the normal range of 750-800 RPM (for most cars), this may indicate a dirty or faulty idle air control valve. In cases where this valve is dirty or failing, your vehicle may stall instead of slowing to an idle after the release of the throttle.
To avoid any unnecessary repairs, I would recommend having a certified expert, like one from YourMechanic, come to your location to diagnose your no start issue and service your idle air control valve as necessary.
How to Identify and Fix Common car Problems ?
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Sensors that fail to send information to the computer may cause the engine to run less efficiently, and they can sometimes be the cause of an engine that won`t start. One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft.
Even when your throttle body`s blade closes entirely, some air has to get through to the intake manifold. Otherwise, your engine would stall. This air flows through a special tunnel known as the idle air bypass. This bypass provides just enough air to keep your engine running while your car is idle.
If the module detects a problem with the way the IAC is behaving, it will turn on the check engine light and store a corresponding diagnostic trouble code (DTC) in its memory.
To clean the valve, you will need a carbon cleaning product specifically designed for cleaning IACV`s. Examples include the 3M Intake System Cleaner Kit, the CRC Throttle Body and Air Intake Cleaner, and the ATP Complete Intake System Cleaner.
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When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed. This is all done by the idle air control valve. When the engine RPM drops below the normal range of 750-800 RPM (for most cars), this may indicate a dirty or faulty idle air control valve. In cases where this valve is dirty or failing, your vehicle may stall instead of slowing to an idle after the release of the throttle.
To avoid any unnecessary repairs, I would recommend having a certified expert, like one from YourMechanic, come to your location to diagnose your no start issue and service your idle air control valve as necessary.
If there is a vacuum leak, then the vehicle will act like this and the computer cannot control the idle. Most of the time it is a bad hose or an EGR valve that is stuck open. That is the most common cause for this. I typically remove the EGR to check it to feel the diaphragm on the bottom of it to see if it is moving correctly. If you need to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair your car’s idling issue.
A problem like this will often affect all or more than one sensor with that uses the 5V reference. If you find the 5V reference is high or low, it is often necessary to disconnect each sensor that uses the 5V reference while monitoring the reference signal. When the signal changes back to 5v and not above 4.9 or below 2.28 volts, you have found the bad sensor.
If once you have checked all of this you have not found the source of the short to ground or power, it is time to suspect the PCM. You will want to check the 5v reference, grounds and power pins directly at the PCM by back probing at the PCM connector.
This can be quite an undertaking to diagnose such a problem. If you lucky, you will find a wire that is broken or something along those lines. If you should require further assistance with this, I recommend the following inspection; Car is not starting inspection.
Good luck!