Question about 2000 Chevrolet 3500

5 Answers

Cube van won't start

Have confirmed there is no power to the fuel pump. Did this by interrupting wire going to fuel pump and checking voltage - none. The gas guage reads way past full when ignition is on. Lately engine cranked longer to start. Prior to this it was a quick starting motor. Any connection?

Engine cranks normally. Does not start. Thank you for any help.

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  • foul Aug 03, 2008

    I checked all fuses and they're good.

  • foul Aug 03, 2008

    Year 2000 Chevrolet 3500 cube van

    350 engine

  • foul Aug 03, 2008

    When I turn the key on, the check guages light stays on. No check engine light on.

  • foul Aug 03, 2008

    In reference to taking longer to start (which may just be my imagination), it cranks at normal speed for as long as I choose to crank it now. The voltage on the battery is 11.80. At this point I can't check the alternator output without the engine running, as far as I know.

  • desertsands6
    desertsands6 Mar 01, 2013

    save yourself some grief. if it started the last couple days and you know it to be dependable pop a screwdriver in between the connections on both pos and neg and see if that works. alot of times its justcorrosion buildup and cold weather makes it worse. clean the battery really good

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5 Answers

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  • Master
  • 321 Answers

Possibly,could be a bad ignition switch,find a wiring diagram for the fuel pump power wire after the ignition switch,up around the steering column.Turn the switch to Run position,check there to see if a 12 volt supply is present,from there,it should go to the relay,that sends power back to the pumpYou can also check power at the fusebox with a test light on both blade ports of the fuel pump circuit to see if any power is present on either blade.

Posted on Aug 03, 2008

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  • Master
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Ok then your problem is eletrical, you said you check the fuses, there should be a fuel pump relay under then panel in the hood. check that (if there isnt one then its a broken wire somewhere along the line to the pump. You can get the car started bo connecting the pump directly to the battery. There are 3 wires from the pump, 1 is hot the other is a ground and the other is for the fuel gage(float) just connect the hot directly to the battery and you should get startet. Warnin dont run it like this just use it to get to an autoeletrician

Posted on Aug 03, 2008

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  • Rishi Roshan Ali Aug 03, 2008

    Its taking longer to crank, cause there it isnt getting enought gas, you problem with the pump may have been causing this.

  • Rishi Roshan Ali Aug 03, 2008

    have you verified the relay ?

  • Rishi Roshan Ali Aug 03, 2008

    BTW Rapid Transit is a veterian auto mechanic, Specialised in transmissions and rebuilding them i believe. Please considre his suggestion first before mine

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  • Master
  • 659 Answers

Id say either you battery is going get it checked out, might be shooting your volts around too much put a meter on it and see if there is any odd activity.

also the alternator maybe acting up or make sure that the starters wires are tight from the battery as well

Posted on Aug 03, 2008

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  • Chevrolet Master
  • 2,039 Answers

When you put the key on do you have a check engine light that stay on

Posted on Aug 03, 2008

  • pierre laplante Aug 03, 2008

    now were getting somewhere no check engine no power to computer and no power to gas pump did it hapen after a rain fail computer is on the driver side they put a little protector on top but rain could have fell inside if our sure about our fuses double check please if ok remove the computer there about 50 tin wire check the wire i sure you have one coroded and on top of trasmission the top bolt have big ground connected to it i say many of those broken but the key is our check engine light it has to be on with the key on checkk the trasmission ground first its easyer

  • pierre laplante Aug 03, 2008

    when you check what i told you leave the key on if you move a ground or wire and you hear the pump comming on our close im sure were gonna fix our truck before sunday good luck pierre let me no

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  • Master
  • 594 Answers

Check your fuses. if there is no power to it than thats a great place to start.

Posted on Aug 03, 2008

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  • Cameron Viseth
    Cameron Viseth Aug 03, 2008

    what is the year make and model? engine size?

  • Cameron Viseth
    Cameron Viseth Aug 03, 2008

    have you checked the fuse to make sure that you fuse is getting power?

  • Cameron Viseth
    Cameron Viseth Aug 03, 2008

    ok. here are the possiblities. 1. since you are not getting any power to the fuel pump at all. look at your fuse box and find the wire that connects to the fuel pump fuse. than trace it backwards to the pump. What it sounds like and it is not uncommon is that you have lost connection in your lead wire causing it not to recive any power. This can happen by vibration.pot holes and other things. But since you are not getting any power what so ever to the pump. i would trace it down and look for any loose,frayed or broken wires.....



    now if you get your pwoer back to the pump and still the pump will not work you will need to replace the fuel pump sending unit.

    what it does is sends the signal to the pump to come on when the truck is started and it also sends the reading to your fuel gage. Unfortunaly you will have to replace the whole fuel pump unit it's self because they do not sell the sending unit alone. To do that you will need to drop your tank. for more instructions on how to replace the fuel pump let me know.....

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