Cars & Trucks Logo

Related Topics:

Joe Russell Posted on Apr 28, 2021
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

What cause the fuel pump not to run on a 1996 Chevrolet pick-up truck Silverado 5.7L?

4 Answers

jack layton

Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

  • Chevrolet Master 5,569 Answers
  • Posted on May 04, 2021
jack layton
Chevrolet Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

Joined: Nov 12, 2014
Answers
5569
Questions
0
Helped
2396951
Points
20059

Jump the switch side of relay with jumper wire, cavities for terminals 30 and 87 in diagram. As you see in diagram, terminal 87 shows to be fuse protected and hot all the time. switch side is left side of relay in diagram. The pump should run with jumper, don't need the key. You can also see fuel pump/oil pressure switch, redundant power supply to the fuel pump. Even w/o the relay, once you crank it enough to bring up oil pressure, that switch closes and the pump should run, depending.
What cause the fuel pump not to run on a 1996 Chev - fuel pump relay-undefined-undefined-0.jpg

CJ Rock

Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

  • Chevrolet Master 4,429 Answers
  • Posted on May 03, 2021
CJ Rock
Chevrolet Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

Joined: Dec 08, 2012
Answers
4429
Questions
0
Helped
1644458
Points
15024

The fuel pump power feed is fused and switched by the fuel pump relay.

The relay is controlled by the PCM.

The PCM energizes the relay depending on the position of the ignition key and the input from the crankshaft position sensor.

The pump will not run if the pump is bad, the relay does not energize, or an open circuit exists from battery positive to pump fuse from fuse to relay or from relay to pump or pump ground (battery negative).

Ad

ray gallant

Level 3:

An expert who has achieved level 3 by getting 1000 points

Top Expert:

An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

  • Chevrolet Master 74,163 Answers
  • Posted on Apr 28, 2021
ray gallant
Chevrolet Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

Top Expert:

An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

Joined: Apr 25, 2010
Answers
74163
Questions
0
Helped
656959
Points
561709

Possibly a bad relay

  • 6 more comments 
  • Joe Russell Apr 28, 2021

    i can hear the relay working when i turn the key on but the pump not coming on.

  • ray gallant Apr 28, 2021

    the replace the pump

  • Joe Russell May 03, 2021

    can i just replace the fuel pump or do i need to replace the fuel pump & housing assembly?

  • ray gallant May 03, 2021

    you can but it requires dropping the tank. testing the relay is 1st option and lots cheaper thanthe pmump

  • Joe Russell May 04, 2021

    how do i test the relay?

  • ray gallant May 04, 2021

    i buy a new one and try it and hope I didn't waste my money

  • Joe Russell May 04, 2021

    i jump terminals 30 and 87 the pump don't run

  • Joe Russell May 04, 2021

    when i turn the key on i can hear the relay click

×

john h

Level 3:

An expert who has achieved level 3 by getting 1000 points

Top Expert:

An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

  • Chevrolet Master 29,494 Answers
  • Posted on May 03, 2021
john h
Chevrolet Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

Top Expert:

An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

Joined: Jun 07, 2009
Answers
29494
Questions
0
Helped
7556845
Points
193449

If it's the original pump you have been lucky was no recall but if and when the unit failed you had to replace the harness connector a well due to corrosion which caused the pump to fail this may not be the problem with yours like RAY states check relay first check for power to the pump and the pump is Incorporated in to the housing unit

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

Does a 1994 Chevrolet Silverado c1500 have a fuel pump

Yes, it has an electrical fuel pump located in the gas tank. First check the fuel pump fuse located in the fuse panel on the left outer side of the dash. You can only access this panel with the driver's door open. It is located near the black button for the dome lights and chime.

It is a 20-amp fuse. Replace it if it is blown, but ONLY with a 20-amp fuse. The wire harness for the fuel pump sometimes goes bad, or the pump motor, or the wire harness inside the tank to the pump motor. If the blown fuse is replaced with a larger-amp fuse, you could cause a fire or explosion.

If it blows the replacement fuse, stop. Fuses blow for a reason, 9 times out of 10. Call a tow truck to remove the truck to a qualified repair shop.
1helpful
2answers

I have a 1996 chevy silverado 2500 every once in a while it will stop running,when i pull the fuel pump relay out and put back in it starts back up. it is very warm to the touch,just noticed today tha

I would just replace the relay. Then if it still happens, your fuel pump is drawing too many amps. Causing the relay to overheat and shut off. Time to replace the pump, before it dies on you.
0helpful
1answer

95 chevy pick up 5,7L . have spark, have fuel, won't start?

how much feul pressure, it must maintain a certain amount if injected, or throtle body, try priming it ,and see if it helps, ( poor a little into inlet ) and check it , if it starts you need to check pump, or maybe just filter
0helpful
1answer

HaVE A 96 1500 PICK UP WITH V6 VORTEC, GETTING ONTO FWY TRUCK DIED. NOW IT WILL CRANK OVER, HAVE SPARK AND FUEL TO CARB. WONT START. IF I POUR FUEL INTO CARB IT WILL RUN. ANYIDEAS IAM SITTING ON FWY NOW

Sounds like you lost a fuel pump, although they usually don't quit while being driven. Have it towed and get a fuel pressure check. That vehicle has to have very close to 60 psi fuel pressure to run. Have a new fuel filter installed also. Plugged fuel filters are the most common cause of fuel pump failure.
0helpful
1answer

1996 Chevy Silverado 1500 - truck doesn't act like it's getting fuel to start. Battery, starter, plugs and fuel filter are all good. Why won't it turn over?

If it doesn't turn over, that tells me the starter is bad.

However, if it is turning over but not running over time, then I would try some starter fluid in the throttle body to see if it runs in lieu of gasoline.

If it does run on starter fluid, then it may have a bad fuel pump.

0helpful
1answer

My truck runs great after it is started. the problem is that i have to use starting fluid to initially start it. i have replaced the wires, spark plugs, and fuel filter and it still does this. other than...

LISTEN TO HERE IF THE FUEL PUMP CYCLES IN THE TANK FOR 3 SECONDS WHEN YOU PUT THE KEY IN THE RUN NOT START POSITION? I WOULD RUN A FUEL PRESSURE TEST FIRST TO SEE WHAT THE PRESSURE IS IF **** BELOW SPECS IT WILL CAUSE THIS PROBLEM 90 % OF THE TIME ? THE OTHER 10% ITS CLOGGED INJECTORS OR ELECTRICAL PROBLEMS FROM ECM TO INJECTORS , THEY ALSO SELL THESE LITTLE FUEL INJ NOID LIGHT YOU UNPLUG THE WIRE TO THE INJECTORS AND INSTALL THESE LITTLE LIGHTS THEN TURN OVER THE TRUCK TO SEE IF THEY FLASH IF THEY DO LOOK TOWArd the fuel filter or pump
1helpful
1answer

Fuel pump

yes thats normal the prob is the fuel pressure regulator
7helpful
1answer

Where is the fuel pump shutoff switch located on a 1996 chevy silverado 1500 located

Should be on the passenger side kickplate below the glovebox and to the right. You may have to remove the plastic panel to access it or look for a small hole in it and feel around for the button
0helpful
1answer

1999 Chevrolet Silverado 1500 Fuel Pump

check the connector to the fuel pump for corrosion or loose pins, the fuel pumps of newer cars and trucks are designed to last at least 100,000 miles, when the new pumps quit did u verify they had power to them?
Not finding what you are looking for?

183 views

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

john h

Level 3 Expert

29494 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...