Question about 1987 Chevrolet Blazer

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Where do I ground connect the ground wire from the fuel sending unit to the chassis of a 1987 K5?

I replaced the fuel pump in my 1987 K5 Blazer. I connected the pump to the port on the driver side and cannot find the location to ground the pump. The wire leads from the pump and has a loop connection.

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  • Chevrolet Master
  • 40,764 Answers

Attach it to any metal part of the body . Clean the area first to ensure a good connection. Use a small self tapper screw

Posted on Feb 09, 2014

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Posted on Jan 02, 2017

tripletauto
  • 1450 Answers

SOURCE: 1988 Chevy S10 2.5

chack and see if your security light is staying on if so then security is shutting down fire to injectors.
are you gettting spark? pcm needs to see a signal from cam sensor to fire injectors. also when you first cut key on you should see the injectors give an initial shot of fuel

Posted on Sep 29, 2008

  • 1214 Answers

SOURCE: 94 s-10 blazer won't start

The 92 S-10 I had did not have an emergency shut off.Yours may, or may not have, depending on what previous owners may have done to the vehicle.

You need to get a factory service manual (not Haines or Motors or Chilton) to diagnose the problem, Most larger repository libraries have them. The FSM's have complete troubleshooting guides.

Posted on Jan 24, 2009

  • 6 Answers

SOURCE: 87 k5 blazer

check module in distribitor

Posted on Mar 22, 2009

bunnydawg
  • 5158 Answers

SOURCE: i have a 1987 k5 blazer was coming home and check

first ... look in the fuse panel.. in the engine compartment near the battery for the fuel pump relay.... replace that... if still no sound from the fuel pump it has likely failed. use a meter to test for voltage at the fuel pump.... or use a car battery to apply voltage to the fuel pump directly... if it starts up the issue is elsewhere. to replace the fuel pump you will likely need to drop the fuel tank.

Posted on Apr 17, 2009

  • 1 Answer

SOURCE: location of fuel pump relay on 1987 chevy blazer

It's the black oval box attached to the firewall with a wire harness coming out of the bottom
under the hood...above/slightly to side of passanger side valve cover...should have grey plastic locking "key" on the face of it

Posted on May 31, 2010

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I dropped the tank on my '99 Durango, installed a new fuel pump unit but the fuel gauge still shows empty. How do I troubleshoot?


The fuel gauge is directly controlled by the fuel sending unit inside the fuel tank, it sends a ground return signal back to the fuel gauge. I am assuming of course that your fuel gauge is okay. To test your fuel gauge, connect the wire which goes to the fuel sending unit to chassis ground. Your fuel gauge should respond and indicate Full Tank. If not, there is a broken wire somewhere between your fuel gauge and the sending unit. Before connecting the wire that goes to the sending unit to ground, check it first with a DC Voltmeter, you should be able to read +12volts. Be sure that you turn your ignition switch to it's ON position.

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It sounds like you do not have a good ground connection between the fuel pump (possibly mounted inside the fuel tank) and the chassis/neg side of the battery. This is sometimes caused by rust on mounts etc. I would try test connecting a wire from the negative/chassis side of the battery directly to the fuel pump chassis/mount. Good luck!

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On a 1972 Chevy K5 Blazer, the tan wire from the gas sending goes to the back of the fuel gauge I understand. Where on the back of the fuel guage exactly does it go? Does any wire go to fuse block? W


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Hi i have a 87 chevy k5 blazer with a 305 in it and im not getting any spray out of the injectors ive replaced the fuel pump the coil,fuel system relay and still nothing im out of ideas any help would be...


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1 Answer

I have a 1987 k5 blazer was coming home and check eng. light came on and started to sputter the next morning the fuel pump would not come on and it wont start??


first ... look in the fuse panel.. in the engine compartment near the battery for the fuel pump relay.... replace that... if still no sound from the fuel pump it has likely failed. use a meter to test for voltage at the fuel pump.... or use a car battery to apply voltage to the fuel pump directly... if it starts up the issue is elsewhere. to replace the fuel pump you will likely need to drop the fuel tank.

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