Question about 1997 Buick LeSabre

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A noise coming for the rear passanger side under by the gas tank sounds like a vacumn of some sort

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Thats the fuel pump making the noise.Replace it before it failes.

Posted on Jul 20, 2009

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2001 caddilac deville dhs shakes when it goes over 60mph and makes thumping noise from rear passanger side when i brake


Check the U-joints this will give you a thumping sound by running
out of round. Banging on bottom of car.
The noise in the rear could be a bad wheel bearing, I had that
happen when the race of the bearing came apart.

Apr 21, 2013 | 2001 Cadillac DeVille

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Rear car driver side noise when there is gas in the tank and when pushing gas pedal


The problem you are discribing could well be the impending failure of the fuel pump I am assuming that this is a late model fuel injected car . The noise is transfered by the fuel in the tank . Have a tech check and make sure you have only a small amount of fuel in the tank when getting the pump replaced as the gas tank must be removed in order to replace the pump . Hope this is some help
Regards

Mar 14, 2013 | Cars & Trucks

1 Answer

I have 2 questions 1st- about a year ago i had a new fuel pump installed. (delco) In the last week i have noticed a sound like a high pitch squeal. I crawled around under the van while it was running. The...


First of all $900 for a fuel pump? You got ripped! Sorry ,I just replaced one myself and fuel pump only cost me $214 with life time warenty. if you are the least bit mechanically inclined? Get a piece of plywood about 2ft-x2ft and place on floor jack under gas tank ,siphon as much gas as you can out of gas tank,mark the three lines on the passenger side of the gas tank on top(1,2,3)and dis connect,.jack upplywood to gas tank to hold weight while loosening 2 metal bands(straps) around gas tank, there are 2 bolts on each strap, lower tank to ground and slide off jack,jack up rear of vehicle to slide gas tank from under vehicle, remove the "C" clip to release fuel pump from gas tank. reverse this procedure to reinstall new one. The only problem I had was the new O ring gasket that came with new fuel pump was too stiff not allowing enough clearance to install C clip so I used the old O ring gasket and had no problems. That occasional popping could be a cv axle assuming you have all wheel drive.

May 26, 2010 | 1998 GMC Safari

1 Answer

Heater and Air conditioner work bur air flows from window vents only. Can't change direction of air flow to different vents.


There may be a couple of items to look at here.... but the most common problem is a source of vacumn to the pneumatic operation of the heat/a/c vent doors....if vacumn is not distributed properly to the vents you command it is assumed that there is either no vacumn to the selector swith panel(broken vac. line,kinked vac. line, defective in dash a/c control panel) or under the hood a defective vac./heater control valve that is stuck,frozen, not allowing the vacumn to pass through it to supply the indash pneumatic controls and/or panel.
Most vacumn systems that i have ever came in contact with incorporate a vacumn supply tank(nothing more then a round plastic vac. resevoir) which is used in sequence with the a/c heater controls, its purpose is to keep an even vacumn supply to all command points continously while the vehicle is being driven, without this supply one will experience the a/c coming from various different non selected dash vents upon acceleration, this is a direct relation to the tank either being defective(leaking vacumn) or its supply hose(usually vey tiny rubber/plastic tubes) being pinched or broken not allowing the vacumn to the supply tank.
listen for vacumn leaks(hissing sound), look for the obvious...broken vacumn lines or hoses, also check for a defective one way vacumn valve on some pneumatic controlled door vent systems(these valves are inserted in a vacumn line one side being the ""in" port and the other side of it being the "out" flow port,typically if these dont work the vents will also devert your a/c or heat all different ways through your dash.
to check these valves, simply remove from the vacumn hose, and apply vacumn to one side,if vacumn flows through the valve, apply the same vacumn to the opposite side of the plastic valve, if vacumn flows through on the opposite side the valve is bad, it should only allow flow from one side not the other. These valves are small and are usually white or black plastic and look like the old vacumn dash pots used on the old carbureated engines only smaller with one small hose in and one small hose out.

May 16, 2010 | 2004 Buick Rainier

2 Answers

Buzzing noise


sounds like the fuel pump which is actually in the gas tank but will sound like under the seat if it never made the sound before it might be getting worn out have it checked out

Aug 02, 2009 | 2005 Chevrolet Suburban

1 Answer

85 E350 Ford not switching from Fnt to RR fuel tank


85 ford 350 econoline van with 460 engine and duel tanks, lost prime on both tanks, cannot get gas up to inlet on carb, it happen after having shot work on vaccum lines, i can't hear the pumps in the tanks making a buzzing noise, i hear a click when i switch from front tank to the rear tank , somewhere under the hood, on the driver side front fender, what is the next step.

Jun 26, 2009 | 1985 Ford Econoline

1 Answer

Gas tank has started to make a lot of noise, you


Sounds like the baffles have come loose in the tank. The only thing you can do is replace it.

May 06, 2009 | 2004 Dodge Durango

3 Answers

I've got bad gas and need to know the easiest way to drain the tank or otherwise fix the problem.


The tank will have to be removed from the vehicle and completely dried out.Gas tanks no longer have drain plugs as they did 50 years ago.Remove the fuel pump from the top of the tank,and thoroughly clean the tank with brake cleaner and compressed air and let air dry for awhile.The fuel pump and filter will need to be replaced with new,and after all the reinstallation,the fuel line must be disconnected at the engine,and the line flushed with new,clean gasoline as well as the return fuel line.Spark plugs will have to be replaced also.

Aug 12, 2008 | 2003 Toyota Matrix

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