Question about 1990 Chevrolet K1500

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1996 chevrolet truck wont start after sitting overnight. no power at the control side of the fuel pump relay socket when the key is turned on.what could cause this?

If I use starting fluid the engine will start and run fine. only when its left overnight it wont start. just cranks over. I have constant power on one pin and a good ground showing on another. just no power on the control pin when the key is turned on.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: 1994 S10 Blazer Fuel Issues?

YOU SHOULD INSTALL ORIGINAL GM PART AND NOT AFTER MARKET. I INSTALLED 2 AFTER MARKET PUMPS THEY WORKED FOR A WHILE THEN STOPPED. THE PROBLEM WAS NOT ENOUGH PRESSURE, SINCE I INSTALLED GM PART NO PROBLEM.......

Posted on Jun 27, 2009

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  • 497 Answers

SOURCE: what causes 350 on a chevy c1500 1996 to start

Sounds like a poor idle. try adjusting the idle screw.

Posted on Aug 09, 2009

  • 10 Answers

SOURCE: 1998 chevy c15 5.7 SFI SYSTEM

My truck did this after I replaced the fuel pump. Turned out to Fuel Pressure Regulator. It would crank and crank but never start. It's located underneath the black plastic manifold on the side of the injectors.

Posted on Feb 19, 2010

duane_wong
  • 6826 Answers

SOURCE: 1996 4.3 vortec S10. Cranks

The plenum shouldn't be damp with gas. Is it a throttle body fuel injection system?

Could be a leaky injector.

Fuel Meter Body & Fuel Injectors (4.3L Engine) Removal & Installation 1995-2002 Models (RPO L35) To Remove:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Remove or disconnect the following:
    • Upper intake manifold (See: Upper Intake Manifold)
    • Fuel meter body
    • Injector retainer lock nuts (J) and retainer (K)
    NOTE: Use care in removing the fuel injectors to prevent damage to the electrical connector terminals. The fuel injector is serviced as a complete assembly only. Also since the injectors are electrical compartments, these injectors should not be immersed in any type of liquid solvent or cleaner as damage may occur. Fuel injector cleaning is not recommended.
  3. While pulling the poppet nozzle tube downward, push with a small tip punch down between the injector terminals until the injector is removed
To Install:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

Note: When ordering new fuel injectors, be sure to order the correct injector for the application being serviced.
  1. Lubricate the new injector O-ring seals with clean engine oil.
  2. Install or connect the following:
    • Fuel injector (L) into the fuel meter body injector socket
    • Retainer (K) and injector retainer lock nuts (J) and tighten the nuts
      1. Torque to: 27 inch lbs. (3 Nm)
    • Fuel meter body
    • Upper intake manifold (See: Upper Intake Manifold)
  3. Test drive the vehicle to confirm the repairs.
1993-2005 Models (RPO LU3) To Remove:
4.3L (RPO LU3) Fuel meter body assembly gm_trk_sil15_02-04_43_rpolu3_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section.
  2. Remove or disconnect the following:
    • Upper intake manifold (See: Upper Intake Manifold)
    • Fuel meter body
    • Injector retainer lock nuts (J) and retainer (K)
    NOTE: Use care in removing the fuel injectors to prevent damage to the electrical connector terminals. The fuel injector is serviced as a complete assembly only. Also since the injectors are electrical compartments, these injectors should not be immersed in any type of liquid solvent or cleaner as damage may occur. Fuel injector cleaning is not recommended.
  3. While pulling the fuel injector downward, push with a small tip punch down between the injector terminals until the injector is removed
To Install:
Note: When ordering new fuel injectors, be sure to order the correct injector for the application being serviced.
  1. Lubricate the NEW injector O-ring seals with clean engine oil
  2. Install or connect the following:
    • Fuel injector (L) into the fuel meter body injector socket
    • Retainer (K) and the injector retainer lock nuts (J) and tighten the nuts
      1. Torque to: 27 inch lbs. (3 Nm)
    • Fuel meter body
    • Upper intake manifold (See: Upper Intake Manifold)
  3. Test drive the vehicle to confirm the repairs

Posted on Jan 29, 2011

  • 226 Answers

SOURCE: where is the fuel pump relay located an which fuse

try to smack the gas tank with a rubber mallet with someone cranking the key .if it starts then the pump is no good .otherwise the relay should be on the pass side of the firewall.poss under a long black cover.the fuse will be in the fuse box under the hood on drivers side. var fctb_tool=null; function FCTB_Init_0b704873de9943d2aa9b1abbb4656a28(t) { fctb_tool=t; start(fctb_tool); } FCTB_Init_0b704873de9943d2aa9b1abbb4656a28(document['FCTB_Init_72d341bf61da4120a5167e6de35ebcf0']); delete document['FCTB_Init_72d341bf61da4120a5167e6de35ebcf0']

Posted on Feb 06, 2011

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