Other Fuel System Pump Problems of Toyota Camry - part 2

I went out to the garage to verify that the garage door was closed and heard something humming in the garage. Upon investigating the sound it turned out to be coming from under the rear of the car. The only thing that made sense to me was the fuel pump was running. I proceeded to get the keys and cycled the ignition to on without starting the car and then back to off. The humming stopped. I did remember hearing a second humming sound start and stop when turning the key to the on position, which would be the normal fuel pump cycling for an engine start sequence. I am wondering if what I originally heard may have been a relief valve slowly bleeding off pressure, but I am not sure if there is a relief valve somewhere in the back of the car. I disconnected the battery overnight for piece of mind. This did all occur between 4-5 hours after the car had been parked. I will be contacting my Toyota dealer regarding this problem.

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I own a 2007 Toyota Camry se and for the past several months I have been having issues with my car not starting if it is on unlevel ground. I assumed it was something in the gas I had recently purchased but that does not seem to be the case. If my car is parked on unlevel ground, I now have to place the gear in neutral and push the car to a level ground in order for it to start. I recently had it checked out by a mechanic and he told me that it had to be a sensor in the fuel pump causing my car to respond in one of two ways: 1) there was no gas in the tank or 2) the antitheft sensor was on and the car doesn't start if the vehicle has been stolen. I had a full tank at the time so option 1 was definitely not the case. This issue is continuous, is anyone else having this issue where your car won't start if you are on unlevel ground???.

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Toyota adds 1. 5m vehicles to engine stalling recalls the latest recall brings the total number requiring fuel pump repairs to 5. 8 million how is this not on the NHTSA website? this has not happened to my vehicle . . . Yet. It is being checked. . Read more...

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This seem to be a common problem to 1999 Toyota Camry. Isc valve just die off for no reason and no signs of any broken . Car can not be started when this valve is defected. Even if car can be started, it will be very shakey. Dt.

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