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Put in new oil pump but still wont pump

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The pump is in the oil pan. Not much you can do until you take the pan off and examine the pump and pickup screen.

Posted on May 02, 2013

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  • Cars & Trucks Master
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What is the year, make and model?

Posted on May 02, 2013

Testimonial: "1997 ford taurs"

  • nick May 02, 2013

    1997 ford taurs

  • Brad Brown May 03, 2013

    How are you measuring the flow?

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My buick sky lark wont stay started when i try and start it it starts but shuts off right away i put new fuel pump new computer and everything else cant figure out the problem


Is the fuel pump relay working ?
Are you loosing spark or fuel pressure ?
The engine computer must see oil pressure or RPM to keep the pump relay on.

Apr 12, 2015 | Buick Cars & Trucks

1 Answer

Put on new fuel pump got pressuer but want stay cranked


Your post is lacking any detail. However, if you are stating that the engine starts after being cranked but dies out (wont stay running) there are 2 ways the fuel pump is activated. When the key is first turned on, there is a 5 second fuel pump run (the ECM energizes the fuel pump relay). After the engine starts, the fuel pump relay will only stay energized when the oil pressure switch closes keeping the fuel pump relay on (oil pressure is above 5-7 psi). If the oil pressure switch is faulty or there is no oil pressure, the engine will stall just after starting.

Apr 10, 2014 | 1999 Chevrolet Astro

1 Answer

Oil pump


Did you prime the pump first ?

May 15, 2013 | 1997 Nissan Pickup

1 Answer

If oil pressure sending unit is bad will it stop fuel pump from working on a 2000 blazer


You should never try a pump without it being in fuel. It uses fuel for lubrication when it is running. If the vehicle doesn't start at all when you first crank it over it is not the oil pressure sender. If you just put the pump in you might want to turn the key off and on several times to cycle the pump then try to start it. If it doesn't start then check fuel filter or check fuel pressure at fuel rail in engine compartment. Is fuel pump cycling at all when the key is turned on? There is a problem with ignition switches on some of these blazers.

Jan 04, 2012 | Chevrolet Cars & Trucks

3 Answers

I have a 1988 Chevy K2500, V8-350 cu. in with TBI. I have fire, but there is no fire running to the fuel pump. There is a new fuel pump relay installed and the fuse is also good. Truck ran fine, then...


Oil pressure switch puts power to the pump after it is started.

Pumps also tend to loose their ground with age. I often splice in a new ground at the pump to eliminate that problem area.

Need some votes, thanks

Aug 22, 2010 | 1990 Chevrolet K2500

1 Answer

My 95 tahoe starts but dont stay on. Fuel wont stay pumping from tbi. Just swapped a motor from 80's camaro. Was running real good in box chevy perfect. Now fuel wont stay flowing out of injectors. Already...


did you install the oil pressure switch origional to the tahoe? The tahoe uses a low oil pressure shutdown, instead of an inertia switch to shut off the fuel pump in the event of an accident. If the pressure circuit does not close within 3 seconds after the engine starts the fuel pump shuts off. This is in case the truck is on its side or upside down the pump will shut off.

Aug 19, 2010 | 1995 Chevrolet Tahoe

1 Answer

HOW DO YOU CHANGE THE OIL PUMP ON THE 3.3L DODGE GRAND CARAVAN


You'll have to take the oil pan off. First drain the oil though. Once the pan is off the oil pump and screen wlill be attatch with a couple of bolts. The the new pump wont come with a new pick up screen. Twist the shaft with your hand to get get it apart. Install it on the the new screen on the pump in the same direction as it come off or it wont set down into the pan. make sure you use a new gasket. Three hours and your done.

Feb 10, 2010 | 1992 Dodge Caravan

1 Answer

I changed the oil pump the destributer cap, rotor, plugs and wires and now it wont start


Test all the cables, never dismiss the fact that a new part could be faulty. Make sure you put the HT leads back in the right order... Make sure the oil pump is primed, some engines refuse to start if there is no oil pressure... find a way to fill the oil pump manually otherwise it may take ages to get oil pressure.

Oct 31, 2009 | 2000 Nissan Frontier

1 Answer

OIL PUMP PROBLEMS


check valve in or check oil filter,did you do the timing belt,that runs the oil pump on a 2.0

Mar 19, 2009 | 1996 Plymouth Breeze

1 Answer

OIL PUMP PROBLEMS


the oil pump is not electronic it is gear drivin . either the gear is bad or the installation was done incorrect. my advice is to start over and sure the rod is seated correctly . you should be able to put the rod in and not be able to spin it. if it spins that means either the gear is completely bad or the rod needs replacing or both. in order to replace the gear you have to remove the timing chain. in your vehicle if you have a distributor and not coil packs you have to remove the distributor and look at the bott of the shaft to see if it is worn out. hope this helps........please rate this.

Aug 31, 2008 | 1999 Ford Taurus

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