Question about 1994 Buick Roadmaster

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Where is the fuel pump on a 1994 buick roadmaster

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In the fuel tank.

Posted on May 29, 2010

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Posted on Jan 02, 2017

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How to change a fuel pump for a buick roadmaster 1995


you have to drop the gas tank fuel pump is located inside

Mar 27, 2012 | 1995 Buick Roadmaster

1 Answer

My Buick roadmaster 1994 won't start changed the fuel filter but that didn't help put a brand new battery in it and it is not the starter.


Have you checked the fuel pump or fuse? First check for a blown fuse. I belive that is an electrical pump, when you turn the key on with engine off, you should hear a slight whine. The whine is the pump turning on and sending fuel to the enigne. Another way to check is to hook up a fuel presseure gauge to the fuel rail on top of the motor. There will be a rail that conects the fuel line to the injectors the rail is near the spark plugs, there should be a "capped" connection on the end of the rail. Remove the cap, hook up your gauge and check the pressure. Pressure varies w/ model, but it should be above 20psi. If you don't get a reading with the key on that indicates the problem is with the pump or the wiring going to the pump. Do a quick voltage test with the pump connections if you get 12 volts the pump is bad, if not there is damage to the wiring, a fuse is blown or the solenoid for the pump is bad. Avg life for a fuel pump is 100,000 to 150,000miles

Sep 05, 2011 | 1994 Buick Roadmaster

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Still no turnover on buick roadmaster, could it be fuelpump relay?? I had same problem last week & replaced fuel filter & it started & ran great, this morning, same problem turns over & no...


more likely fuel pump itsself. More likely the fuel pump is getting weak, getting stuck, or plugged. Fuel injected systems need a lot of pressure, so if you're not getting a lot of fuel out of the rail, then the pressure's not adequate.

Oct 16, 2009 | 1994 Buick Roadmaster

1 Answer

Last week, had same problem 1994 buick roadmaster car cranks, (turns over)& no start changed the fuel filter, car turned over & ran fine for 1 week, now same problem?? can someone help me??


Hi,
I might suggest pouring a fuel additive in your tank. Possibly you have some condensation/bad gas. Pour it in and let it sit overnight. See if it helps... it won't hurt.
Good luck!

Oct 16, 2009 | 1994 Buick Roadmaster

1 Answer

Replaced fuel pump, pump wiring harness, fuel


Fuel Pump RELAY & FUSE CHECKED & DO you Have POWER "TO" Fuel Pump ? ALSO OIL Sending Unit Supplys the GROUND To Fuel Pump , This is A Saftey FEATURE that Shuts Down Fuel If ENGINE Looses OIL PRESSURE . And If This OIL Sending Unit or also Called (OIL PRESSURE SENSOR) << If It FAILS it WILL Cause What Seems Like A Fue Pump Problem But Is Rally Just The Sensor that is BAD. HOPE this Sheds Light on Your Problem !

Sep 30, 2009 | 1994 Buick Roadmaster

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