Refer to Lifting and Jacking the Vehicle in General Information. I still believe the non operating fuel gage is also part of this problem. Turn ignition off for 30 seconds. Raise and suitably support the vehicle. After engine has stalled, leave ignition on for 10 minutes.
The evaporative emissions system is designed to prevent raw gas vapors from entering the atmosphere. If crankshaft position sensor was removed or replaced. Fuel Tank Pressure Sensor Operation As I discussed in other articles about the evaporative emission system, these codes set to notify drivers that fuel vapor might be leaking into the atmosphere. The problem here is, without doing a thorough and complete diagnosis, throwing parts at it can get awful expensive very fast. What do the experts say. But I also overfilled the tank, which I normally do so I don't think that would have caused it. Light stop and go and I wasn't being a lead foot.
I need to make sure I have it wired properly? On this page I offered links to two different sensors from two different companies with quite a price difference. It can also be caused by dirt or spider webs blocking the complete sealing of the purge or vent solenoids. If the code was cleared and came back, you need to do a little in-depth diagnosis to figure out what's going on. I don't want to throw parts at it or spend money I don't have to. If the sensor was reading high voltage and that disappears when the sensor is unplugged, check for proper ground and ensure you have 5-volt reference voltage. If circuit is okay, go to next step. Password Learn Procedure For Anti-Theft System 5.
If problem is found, go to step 15. Remove the bolt retaining the vent valve bracket. Oh man, I was sure the valve would have fixed it. If you still run into problems you may need to go to a mechanic. Did you clear the code after replacing the fuel tank pressure sensor? Refer to in Wiring Systems. So it checks barometric pressure, intake air temperature, engine coolant temperature, and fuel level.
Most gauges measure vacuum in inches of mercury Hg and pressure in pounds per square inch psi. Replaced the vent valve solenoid but the P0446 code is still coming up. I went through the troubleshooting guide you provided. If the system fails two times in a row, it will light the check engine light and provide a code. Refer to in Wiring Systems.
I highlighted below in the bold font. Disconnect fuel tank pressure sensor harness connector. This indicates that the three-way catalytic converters oxygen storage capacity is below a threshold considered acceptable. Vacuum is consider negative pressure. If circuit is shorted, go to step 15. Ensure battery is fully charged. Replace fuel tank pressure sensor.
P0452 Chevrolet Description The fuel tank pressure sensor responds to changes in fuel tank pressure. However, when the sensor itself causes a problem, P0452 or a P0453 set for the fuel tank pressure reads low or high respectively. The component that reads the fuel vapor pressure is the evaporative emission control system pressure sensor, also referred to as the fuel tank pressure sensor. Observe the fuel tank pressure sensor voltage with a scan tool. If fuel tank pressure sensor value is not within -1.
Is the Fuel Tank Pressure sensor voltage near the specified value? Sidebar: The diagnostic steps above cover the most common problems. After replacing sensor, go to step 17. I guess thats causing the fuel gage to not work. This can result in higher emissions and other problems for the engine, as well. If engine starts, password learn procedure is complete.