Question about Toyota Pickup

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The head gasket was blown about 3 years ago. I removed the head and had it resurfaced and reassembled it. Everything else worked fine before.I can not get fuel to the EFI but no fuses are blown and everything seems to be connected properly. It will start on ether sprayed into the air intake but no fuel is pumped to the EFI. The fuel gage also is not working now. I put in more than 7 gallons of gas thinking it was empty or someone had siphoned it dry but the gage did not move at all and no fuel gets pumped to the engine. My Haynes manual does not give me any clues and troubleshooting the fuel system is about 14 pages of tests

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  • martspec86 Jul 14, 2009

    I have checked and rechecked all electrical connectors and can find no problems. I went to toyota and one of the mechanic told me the only thing that would keep the fuel pump from working was the air flow switch but the wiring had not been disturbed there and I have searched the Haynes manual but there is no troubleshooting info there just 14 or so pages of tests to see if each device is ok. I was looking for a quick fix. I removed the throttle body and injector bar again and replaced the o'rings and grommets and checked again the connectors but did not help

  • martspec86 Jul 14, 2009

    This truck had never been opened up and none of the connectors had ever been removed since new so the harness is in good condition. I put all of the 250,000 miles on it myself

  • martspec86 Jul 14, 2009

    Did you get my 2nd response?



  • martspec86 Jul 14, 2009

    The wiring harness is in very good condition and had never been disturbed since new. All injector connectors are securely connected and the 2 connectors to the throttle body are secure as well. I checked all fuses and disconnected the fuel line but no fuel is being pumped to the engine.

  • martspec86 Jul 14, 2009

    I could not remember where the ground wire was bolted to so I bolted it to an unused hole that looked like it might be where it went. I think it is bolted to the head. Should it be bolted to the throttle body?

  • martspec86 Jul 14, 2009

    I just checked and it is grounded to the intake manifold. I also searched the haynes manual and talked to a mechanic at toyota the diagram looks like the fuel pump should run anyway and the toyota mechanic told me if the airflow switch is connected the pump should work but it does not.



  • martspec86 Jul 14, 2009

    I think the problem must be related to the tear down and reassembly but I have removed the throttle body and injector bar 2 times looking for something I missed and did not find anything All connectors are in good condition and properly latched. I disconnected the fuel line and cranked the engine and no fuel made it to the open fuel line. I studied the manual and can not see any interlock between power or ground on the pump or the fuel gage and the EFI system except the EFI main relay and the curcuit opening relay. The circuit opening relay is controled by the IGN switch through the airflow meter which has not been disturbed. The EFI main relay is also controlled by the IGN sw.

  • martspec86 Jul 14, 2009

    It sounds like you are now assuming that the removal of head etc and reassembly were not the problem.
    Everyhing worked good before the vehicle was parked. I am sure it is a possibility but I am still leaning toward some mistake!


  • martspec86 Jul 14, 2009

    I have been trying to figure how to put a meter on the pump because there is no room to work without pulling the tank which now has at least 7 to 8 gallons of gas in it. While I was waiting for more responses, I checked all the fuses in the left kick panel including the engine fuse both for sight and with a meter. every fuse in that block has 12 volts on both sides of it with the IGN switch in run position. I also checked the EFI main relay and it is energized with the IGN on.

  • martspec86 Jul 14, 2009

    That will be a little difficult since the truck is not tagged as it has been of the road for 3 years and has taken root by setting in the same place and rain and dry and rain settling the left side down about 6 inches. I also have no way to tow it or pull it at this time to get it to any place for help!. I think a code reader for the old system is not very expensive so maybe I will go and buy one. I have a scan gage II in my rav-4 but it will not work with the old system.

  • martspec86 Jul 14, 2009

    Guess again, no auto parts store has a code reader that reads foreign OBD1 cars for loan or sale.

  • martspec86 Jul 14, 2009

    How do I get my money back? I spent over 2 hours here with no good answers!

  • martspec86 Jul 15, 2009

    Time will tell. It is an educated guess but I will have to spend a lot of time to prove or dis prove it.
    Baboono offered the same conclusion but I can not be sure because someone stole thew gas out of it shortly after I parked it with the blown head gasket and now I have 7 or 8 gallons of good gas to get out of the tank so I can pull the pump to see if it is really the problem.

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  • Toyota Master
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U had better check the wiring harness to the engine for the injectors, check for loose connectors and pulled out pins.

Posted on Jul 14, 2009

  • yadayada
    yadayada Jul 14, 2009

    U said the truck sat for 3 years? if that is so you can bet the problem is the fuel pump, the fuel has turned to varnish, this makes the electric pump stick and the sending unit loose connection, hence no gauge indication, should have said that in the orig post would have known the problem right away, when u turn the key to on the pump should run for about 4 seconds, u will be able to hear a low hum if the pump runs, but I will bet this is your problem, my 40 years of car repair screams this out as the problem. replace the fuel pump and don't forget the filter, u may also have injector problems due to the varnish from the dried old gas..

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  • Master
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Try this in a quiet environment have an assistant or yourself put your head down near the gas tank at the same time turn the key on you should hear the fuel pump kick on if you don't hear it the fuel pump come on for about five seconds the fuel pump needs replacement along with perhaps the sending unit.

Posted on Jul 15, 2009

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  • Master
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Get the error codes chaked at diagnosis service center .to the nearest car shop.at autozone its free codes checking. this will actually give the better idea as which part is faulty.as all the doubts which can be seen is proper as per you.so the code checking is the best option at this point. thanks.keep updated.

Posted on Jul 14, 2009

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  • Toyota Master
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Sound like grounding wire problem.check to make sure you didnt forget to put ground wire back.or its making contact.

Posted on Jul 14, 2009

  • Jonah Oneal Jul 14, 2009

    make sure fuel line not crimp bent or stopped up are fuel pump filter or sock stopped up.make sure your pump getting power.because your fuel gauge sending unit not working if your fuel gauge not working.your fuel pump not getting power.

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