Question about 2000 Cadillac Escalade

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My escalades Fuel pump is not making hissing noise when cranked.

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Go to pressure regulator, access test valve. Press it in and turn on key. Crank for one second. Gas should come out.

Posted on May 25, 2011

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3 Answers

2000 escalade won't start not getting fuel


GM used different anti theft systems if your key wasn't programed. You need to look up how to program your keys. There are also working fixes to disable this. I just got a 05 Buick without a programed key and has the wiring fix. I can't get the key to program for my car but I may have done the wrong programing.

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I have a 2005 Pontiac that makes a hissing noise underneath the car. you can turn the car ignition on without fully starting car and it still makes hissing noise then stops.HELP!!!!!


There is a distinct sound that has a hissing component when you first turn on the key. It will last a second or two when the key is turned to the run position. When the engine started the sound will return and continue to produce the noise so long as the engine is running.

A relatively low noise is normal. If you are concerned check other like cars for the loudness level.

how to check your fuel pump

The pressure regulator on the fuel rail can also produce a sound when the fuel pump is running. The regulator is under the hood and any reasonable noise would not be a concern, A clicking sound is also normal throughout the fuel system when the engine is running created by the fuel injectors cycling.

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Check for fuel pressure at the fuel rail on the engine. If you have no fuel pressure, suspect a clogged fuel filter or faulty fuel pump.

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have you checked how much fuel pressure you are susposed to have. My jimmy requires 125 to 150 psi the fuel pump whines all the time or as it cycles. research how much fuel pressure you are susposed to have. then go on from there.

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I have a 2003 escalade ,two months ago I put a fuel pump because the escalade stopped while driving and it didn't want to start after 10 minutes the car started and i drove for a little while but stopped...


Have your mechanic do an OBII scan (fault scan) that will identify what is ailing your rig. He'll pull the codes and they'll identify what is exactly wrong.

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It could be the fuel pump pressurizing the system. Does the sound stop after a few seconds? If it is the fuel pump then it is a normal sound. Fuel pumps will resonate in the tank when you are low on gas, making them sound louder. If it is more than a hum then I would get it checked out.

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Make sure fuel pump fuse is OK and fuel filter is new.If OK and you have fuel pressure.14psi for TBI systems and 43psi for multiport sysems.Then check for spark

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check the fuel pump. there is an access port on the fuel rail underneath the intake manifold cover. it looks like a valve for putting air in a tire. at your local car parts store you can find a fuel pressure guage to make sure your getting the 45lbs psi that is needed to run the fuel system. if your not getting 45psi when you crank the engine replace the fuel pump. it is located in the gas tank. ( FYI ) If you run below a 1/4 tank of fuel the fuel pump is no longer covered with gas, and over heats. thats why most of the gm pumps go bad. D

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Fuel pressure regulator makes hissing sound


your fuel pump should cycle on until the proper fuel pressure is achieved then it should shut off

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