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Fuelpump pressure Chevy truck 2500 4x4 - Cars & Trucks

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Posted on Dec 21, 2013

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How can you tell if you're fuelpump or relay is bad on a 93 chev cavalier


easiest is chevy pumps hum and relays click so turn key on and listen should hear click and then a slight hum when pressuring up --no click can mean relay bad or over heated but tech way is remove relay and test with a meter or use another [same number relay]matching relay and turn key and if starts relay bad no start check the pump for power possible bad harness wire or connection or pump bad

Aug 11, 2016 | Cars & Trucks

1 Answer

Replaced fuelpump filter fuseablelink for v6 91 rodeo still no fuel what do i need to check next


you have a bad fuel pressure regulator it is located on the fuel rail

Nov 03, 2012 | 1991 Isuzu Trooper

1 Answer

I have a 87 Chevy suburban and I do not have full power to the fuelpump its got full power at the fuse its like it looses power from under the Hood to the pump what can I do to get power back


There should be a fuel pump relay. Maybe its losing power in the relay. Also part of the fuel pump circuit is the oil pressure switch. The ECM will send a ground to the relay to prime the pump and give fuel while cranking. When the oil pressure is up then the oil pressure sender/switch will energize the pump. If a relay was bad, most times extended cranking until oil pressure registers will turn the pump on and the vehicle will start.

May also check the pump ground. Might be on the frame near the tank.

Sep 13, 2011 | Chevrolet R10 Cars & Trucks

2 Answers

NEED TO KNOW WHERE THE FUEL PUMP RELAY SWITCH IS FOR A 1998 CHEVY S10 TRUCK...


For the 1998 s10 theres no fuelpump switch, there is a fuelpump relay. the relay is in the engine compartment inside the fuse/relay box. the relay will be labeled on the inside cover of the fuse/relay box cover. besides the relay the only other problem for a fuelpump not working on these trucks is the fuelpump is bad or the wiring connector to the pump is bad.

Aug 27, 2011 | Chevrolet Chevy Cars & Trucks

1 Answer

I have a 2001 chevy silverado 1500 with a 4800 vortec engine. it starts and idels fine but when ever i give it gas, the engine starts to sputter and dies. ive already changed the fuel filter and spark plug...


This sounds llike weak feul pressure, the fuelpump may need replacing, the first thing to do is have the fuel pressure tested and if the pressure is low then have the pump replaced. the pump is located inside the fuel tank and the tank will need to be dropped to replace the pump, good luck ,

Jan 01, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

04 chevy avalanche , takes 2 times the rotations of starter to turn the engine over but still starts .. Changed plugs and wires and tips maybe fuel pump injectors?


You are on the right track, the problem which is common is the fuelpump, the problem is , theres an internal antiflow valve the goes bad inside the pump, what happens is the fuel runs back into the tank and empties the lines and injector rail, when you go to start the truck it now take time for it to pnump fuel back through the lines to fuel rail and injectors and pressurize, so it take so cranking to get going. a little neat trick to be sure is to turn key on then off three times and then it should fire up, if it does then its the fuelpump, you will need to drop the tank and replace the fuelpump asm, the pump will still operate, we have customers that have had this problem for a couple of years and still havent repaired it due to the cost, they dont mind the long crank time to start, if you are going to repair drive until gas is about empty, this will help alot when its time to drop the tank,heres a picture of the fuelpump asm, hope this is helpful, have a good day.johnjohn2_13.jpg

Nov 08, 2010 | 2007 Chevrolet Avalanche LTZ

1 Answer

Will a low oil level warning cause the engine to quit on a 1995 chevy caprice


It could, once the engine is running it then keeps the fuelpump running with the oil preasure switch and if the oil preasure drops it can stop the pump,but should start back up unless theres a bad fuelpump relay,

Jun 14, 2010 | 1995 Chevrolet Caprice Classic

1 Answer

Truck starts runs for a second shuts off .


The fuelpump is primed by the oil pressure switch.When the fuel pressure reaches normal PSI the computer shuts that pressure switch off and turns thepoweron to the fuelpump relay.You have a bad fuel pump relay

Jun 02, 2010 | 1994 Mazda 2WD B Series Pickup

2 Answers

Does a 1997 chevy malibu have two fuel filter


No it should have only one. But their will be a pressure regulator as well. If stuck open it will send fuel back to the tank and the car will run ruf.

Aug 15, 2009 | 1997 Chevrolet Malibu

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