Question about 1996 Chevrolet K1500

3 Answers

1996 chevy c1500

No power from pcm to fuel pump relay, replaced pcm with used but same problem

Posted by on

  • JA6137 Nov 09, 2008

    I HAVE NO COMMUNICATION TO THE DIAGNOSTIC COMPUTER, NO ELECTRIC TO ECM, IGNITION, FUEL PUMP OR DASH LIGHTS

  • Anonymous Mar 28, 2014

    my pcm fuse blows when my fuel pump relay is in but when i take out the fuel relay the pcm does not blow

×

3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 314 Answers

Really need more info, but it could be a simple ground wire! Frankster016

Posted on Oct 19, 2008

  • Level 1:

    An expert who has achieved level 1.

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 7 Answers

Probably too late, but I had same problem. Chances are the fuel pump is fine. If you put a jumper across the fuel pump relay you can eliminate that being the problem (you'll hear it start up). For me it was related (and still is) to a loose connection in the wire harness. That's what makes this one so hard to diagnose.

Posted on May 09, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I had the same thing! I had to replace 3 fuel pumps in 2 years. (Bought cheap-o from mexico!) Anyway I took the bed off to get to them every time well it appeared that 1 time I had pinched one of the wires leading to it and it then rubbed itself during normal driving and eventually shorted out. Look at the wiring. I think it cost me like 10 or 20 dollars to fix it. Good luck. Hope this helped.

Posted on Mar 21, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Were is a fuel pump relay switch located on a 2000 Oldsmobile intrigued


Hey James , It's in the under hood fuse box , F/PMP relay an there is a fuse F/PMP 15 amp. Underhood Accessory Wiring Junction Block
Right side of the engine compartment, mounted to the strut tower

The PCM controls the fuel pump relay by supplying switched ignition voltage to the fuel pump relay coil. When the ignition switch is first turned On, the PCM energizes the fuel pump relay. The relay contacts close applying power to the fuel pump. The fuel pump relay will remain On as long as the engine is running or cranking and the PCM is receiving reference pulses. If no reference pulses are present, the PCM de-energizes the fuel pump relay within 2 seconds. With the engine stopped, the fuel pump can be turned On with a scan tool.
If the PCM detects a problem on the relay control circuit, DTC P0230 will set. Use this table if DTC P0230 is not set and a problem exists with the fuel pump!

Apr 13, 2015 | Oldsmobile Cars & Trucks

3 Answers

I have a 2003 Buick Century replaced fuel pump, fuel pump relay fuel pump fuse is no power to the fuel pump what's wrong with the car? Pcm? Key switch where's the relay located


Pull the relay. Using a test light connected to ground probe the four pins in the fuse block. Two of them should have power. Connect the test light to power. Back probe the other two connectors. One should be grounded all the time, this is the power supply wire to the fuel pump. The other should be grounded when the key is turned to the run position and only for about 5 seconds.

Let me know what you find and I'll help you further.

Sep 13, 2014 | Cars & Trucks

1 Answer

96 olds cutlass supreme intermitent no start due to pcm not turning on fuel pump


then check this wire from the relay to the pcm to see if there is a break in the wire or bad connection. if not then the pcm needs replacing. also check grounds for this circuit.

Aug 06, 2014 | 1996 Oldsmobile Cutlass Supreme Coupe

1 Answer

1989 f-250 inertia fuel shut-off switch switch location


This should be in the owner's manual. I found the below on autozone.com, their repair help location:
An inertia switch is used as a safety device in the fuel system. The inertia switch is located in the cab, generally under the dashboard on the right side. It is designed to open the fuel pump power circuit in the event of a collision. The switch is reset by pushing each of 2 buttons on the switch simultaneously (some models use switches with only one reset button). The inertia switch should not be reset until the fuel system has been inspected for damage or leaks.
When the ignition switch is ON , it turns the EEC power relay ON . The EEC power relay provides power to the powertrain control module (PCM) and the control side of the fuel pump relay. Power for the fuel pump(s) is supplied through a fuse link or high current fuse attached to the starter solenoid (battery side). From the fuse link or high current fuse, current flows through the fuel pump relay and inertia switch to the fuel pump(s). The fuel pump relay is controlled by the PCM.
When the ignition switch is turned ON , the fuel pump(s) will operate. If the ignition switch is not turned to the START position the PCM will shut the fuel pump(s) OFF after 1 second. The PCM will operate the fuel pump(s) operate the fuel pump(s) when the ignition switch is turn to START position to provide fuel while cranking.
After the engine starts, the PCM will continue to operate the fuel pump(s) unless the engine stops, drops below 120 rpm or the inertia switch is tripped.

Dec 28, 2013 | 1989 Ford F 250

1 Answer

Locate fuse for fuel pump 1997 camaro


The fuel pump power to the relay is powered by the PCM BAT fuse 15amp.
The relay is grounded and the PCM powers the relay to turn it on and power the pump.
You should have power on the orange wire with the key on.
The PCM powers the relay when the key switch is in the start position and after the computer sees oil pressure and RPM.

Jan 30, 2013 | 1996 Chevrolet Camaro

1 Answer

What is pcm asd circuit


PCM is powertrain control module. ASD is automatic shutdown. The PCM operates the Automatic Shutdown relay and fuel pump relay. The ASD relay supplies power to the fuel injectors and ignition coil. The fuel pump relay connects power to the fuel pump.

Oct 07, 2012 | 2004 Dodge Stratus

1 Answer

Car will turn over but won't start. Through the


No noise from fuel pump when you turn over the car .First thing get voltage at fuel pump relay checked, is there 12 volt to the relay.If no, then problem is again the relay.--------- To reconfirm the problem, try other test, that is remove the relay and by pass the relay terminals with a jumper wire .Then with 12 volt external battery give power to fuel pump connector and see, if the fuel pump starts, then its clear that fuel pump relay is faulty.----------- Also other problem can be fuel pump inertia switch.If the inertia switch is faulty then also fuel pump will not start.-------- The fuel pump relay on a 1995 Ford Explorer is in the power distribution
box, in the engine compartment, driver's side near the firewall.----------
The fuel pump inertia switch is in the right front passenger area
it is below the dash but above the carpet in the right hand corner.--------
Its a push button type inertia switch.
--------
Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts.
Inertia Fuel Shutoff (IFS) Switch
All models use an electrical interrupt switch in fuel system. During a collision or vehicle rollover, electrical contacts within inertia switch open, shutting off fuel supply to electric fuel pump. Fuel supply is interrupted even when engine is running.
A reset button is located on switch assembly. If electrical circuit trips, vehicle will not restart until switch is reset. Fuel system should be inspected before resetting switch.
IFS switch is located under instrument panel, near right side of transmission hump.
----------- If the fuel pump relay, the inertia switch and fuel pump all checked ok, and fuel pump is working with direct 12 volt source to fuel pump.Then problem relates to computer.The computer (power control module, PCM) is faulty and has to be replaced.--------- This will help.Thanks.Helpmech.

Jul 17, 2011 | 1995 Ford Explorer

1 Answer

Chevy 1500 1996 doesnt start just keeps turning over I have replaced fuel pump , Fuel filter , Checked to see if it had spark and it did , Changed pressure regulator , Crankposition sensor and still...


see if your fuel pump is geting power to it stick your ear in gas filler take off cap an have someone turn key thats first your fuel pump relay thats on the fire wall in the engine compartment might be no good thats what turns on pump its on the left side of fire wall with a black cover over it

Aug 21, 2010 | 1996 Chevrolet C1500

Not finding what you are looking for?
1996 Chevrolet K1500 Logo

362 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

71288 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22059 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7009 Answers

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

Answer questions

Manuals & User Guides

Loading...