Question about 1996 Chevrolet Monte Carlo

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No electric on grey wire ... new fuel pump wont work

I have a new relay and fuse is good on dash but fuel pump has no electric on grey wire that runs pump

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On this year the oil sending unit runs in the circuit with the pump a bad oil sending unit will cause no power to the gray power wire. Check that next

Posted on Jun 21, 2009

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1 Answer

How. Many. Fuse. Boss. On 1999. Bonneville. Se


1 fuse 1 relay 1 fuel pump that realy hates when you run it out of gas. open gas door remove cap have someone listen to hear pump "whine" when you turn key on . give fuel tank a good whack
this may work 1 time (seen many no starts that when tow truck brings them in i go out and driveinto shop then wont go again)
you gotta drop tank to test for power grey wire to pump

Feb 28, 2015 | 1999 Pontiac Bonneville

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No Power to Fuel Pump


Tiffany - -I don't know when you first posted this question, but I am seeing it for the first time at 3:30pm on Wednesday.
The people who answer questions on this website are volunteers, nobody gets paid.
If you would like for me to research the wiring for the pump let me know.

Aug 21, 2012 | Cars & Trucks

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THERE HAS BEEN A NEW FUEL PUMP AND FUEL FILTER INSTALLED ON MY 95 CHEVY LUMINA AND WERE SURE THAT ITS NOT GETTING POWER BACK TO THE FUEL PUMP, COULD SOMEONE HELP ME FIGURE OUT WHAT ELECTRICAL SOURCE IS...


Has anyone checked the function of the relay? The relay is on the passenger side under the hood near the black cross member. You will want to check the grey wire at the pump to verify voltage and the black for ground. If the relay is not functioning, it may a pump driver failure in the vehicles ECU. check those areas and if you need more or a wiring diagram please let me know.

Jun 06, 2011 | Chevrolet Lumina Cars & Trucks

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Keeps blowing fuel pump fuse. Why?


This normally happens due to short in the wirings.Or if someone has connected a stereo or some other electrical contrivance to the wiring harness (bundle), either under the dash or under the hood.To confirm this unplug the fuel pump wiring connections and insert new fuse.Then start the car and see,if still the fuse blows then its a short in wiring.But if the fuse does not blows then its faulty fuel pump relay or faulty fuel pump itself.So first replace the fuel pump relay and see,if the fuel still blows then its faulty fuel pump.But if the fuse not blowing then relay was the faulty part.The fuel pump relay located on the fuse box under the hood.---------This troubleshooting tips will help you locate the fault and solve it.-------Thanks.Helpmech.

Dec 13, 2010 | 1996 Dodge Neon

1 Answer

Kmboogieman7cant get my truck to start. might be the the fuel pump, but i i need to check the fuel relay valve switch, i cant find it;. I have a 1998 GMC jimmy.


Can you hear the pump running? If not why not check for power to the pump on the grey wire. Get as close to the pump as possible. If there is power you just confirmed the fuse, relay, and wiring are all good.

The relay is located on the firewall behind the plastic cover that usually has something like electrical center written on it.

Nov 07, 2010 | 1998 GMC Jimmy

2 Answers

Its not getting fuel to the motor. i was drivin down the freeway and it sputtered like it was ou of gas when i know it wasnt


Hello

Power for the fuel pump is supplied by fuse #16 in the Power Distribution Center (PDC), goes through the Fuel Pump Relay and then to the Fuel Pump and the ground completes the circuit. Power for the Fuel Pump Relay coil is supplied by fuse #18 in the PDC and the Powertrain Control Module (PCM) supplies ground. It is a fairly simple circuit to check.
The first thing to do is check all the fuses, especially #16 and #18. If you have they are good then you will need to pull the fuel pump relay and check for power, with the key ON at the dark green/black wire and orange wire. The DG/BK wire is the power for the fuel pump and the OR wire is the power for the relay coil. If you have power there connect a jumper between the DG/BK wire and the dark green/white wire. You should hear the fuel pump running. If not there is a problem in the DG/WT wire from the relay to the pump.
Okay, lets assume that checks out fine, the next thing to do is replace the fuel pump relay and ground the dark blue wire. You should hear the fuel pump running. Okay? Good, now go to the PCM located on the firewall in the engine room. It has three large connectors, black, white and grey. There is a DB wire in cavity 19of the grey connector. Ground this wire and you should hear the fuel pump running. If it does then the wiring for the fuel pump circuit is all good and the PCM will need to be replaced. If it doesn't run, then you have a problem in the DB wire between the relay and the PCM.

Jul 14, 2010 | 1997 Jeep Grand Cherokee

1 Answer

I need the fuel system diagram for a 1998 Chevy Tahoe w/ 5.7L gasoline engine


Dark green provides power to fuel pump relay from the ECU. Orange wire at fuel pump relay is power at all time and is provide from the ECM/Bat Fuse at fuse block (Left side of dash). It also connects to the fuel pump oil pressure switch. The grey wire at relay provides power to the fuel pump and fuel pum oil pressure switch. The red plug thats tape to harness from relay/fuse center is the prime connector..

Jun 11, 2010 | 1998 Chevrolet Tahoe

2 Answers

Fuel pump will not work


theres prolly 3 to 6 relays and fuses both under the hood and dash

Jun 27, 2009 | 1999 Ford Windstar

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Fuel pump not working on 1988 Honda Accord.


CHECK MAIN RELAY= under dash just above brake pedal its a brown and grey color box box tap box vehicle may start temporarily. Contact if you need more help. Good Luck. thanks for using FIX YA

Jan 10, 2009 | 1989 Honda Accord 4 Door

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1996 silverado 5.7 vortec cranks but wont start. fuel pump, gauges, "idiot" lights, blinkers do not work. flashers and all the rest of lights operate. Just replaced coil and this happens


Had the same problem with my '96 Silverado with 350 Vortec. The truck would only crank. It would start if fuel was poured down the throttle body. Could not hear the fuel pump hum. Fuse was good, but could not hear relay click. Relay was good, Did some electrical wiring trouble shooting. Turned out that one of the connectors that clasp onto one of the pins of the fuel pump relay wasn't making a good connection, too loose. I just stuck a peice of wire into the connector and pushed the relay back in. Relay clicked, Truck Started. It's been more than 4 yrs. since I made that McGuyver fix. Still firing.

Jul 26, 2008 | Chevrolet Silverado 1500 Cars & Trucks

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