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Richard League Posted on Sep 23, 2014
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Throttle body not working

Fuel punp works but there are two , I do get fuel pumping out at the line at the throttle body. but not being prcessed after that.

1 Answer

steve h woody

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  • Cars & Trucks Master 2,551 Answers
  • Posted on Sep 23, 2014
steve h woody
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Joined: May 06, 2008
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If you have fuel pressure at throttle body make sure you have power to (nodes) at top of throttle body that opens to let fuel into motor

  • Richard League
    Richard League Sep 25, 2014

    I took off the tank and found a tear in the strainer and broken plastic in the tank , I lost the gas cap at the gas station that day and thet stopped the fume pressure which is why it ran until empty without gas at the pump because it was all blocked by plastic at under 4 gallons. It always started running funny at under half a tank but with no gas cap it wont run at all. Believe it or not

  • Richard League
    Richard League Sep 25, 2014

    Yeah the gas cap broke me down

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5 Related Answers

Anonymous

  • 82 Answers
  • Posted on May 09, 2009

SOURCE: No Fuel at throttle body

If you think it's the pump ... Find your owners manual to find locations of fuses and relays ... First is this vehicle on level ground? Does it have sufficient fuel level (1/8 tank or more) then have an assistant turn on ignition switch to run position (not start) while you listen under the tank to hear a pump ... it may only make a noise for a few seconds ... is there fuel getting to the throttle body at the input line (it could be the injector) if there is fuel pressure at the throttle body/injector it may be the injector itself) >>>If no sound is heard ... first check for power at following locations >>> Fuses >>> Fuel pump relay >>> harnesses/connectors going to the tank from the front all the way back >>> connector at pump (tank likely will have to be emptied and removed, and you would rather avoid this if possible) >>>pump ... I don't suspect filter, as I've never had one suddenly fail completely

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Anonymous

  • 182 Answers
  • Posted on Aug 27, 2008

SOURCE: 1996 GMC Sierra 1500 truck fuel problem

Have you check the injector relay or maybe a fuse for injectors.

Anonymous

  • 1 Answer
  • Posted on Oct 10, 2008

SOURCE: will not start

I change the fuel pressure regulator and fuel pump relay, now runs better.

jagjeffery

Jeffery Lewis

  • 329 Answers
  • Posted on May 31, 2009

SOURCE: throttle body injectors not fiering but there is fuel pressure

the injectors are fired thru the engine cotrol module but it gets its signal to fire from the pick-up located inside the distributor if you are loosing injector pulse only the ignition module is bad if you are also loosing spark when you loose injector pulse your pick up is causing the problem if you replace the pick-up i recomend you change the ignition module when doing so because they work together and you have to remove the distributor to change the pick-up

johnjohn2

Johnny Brown

  • 5763 Answers
  • Posted on Dec 13, 2009

SOURCE: blew fuse to fuel pump,didnt realize it had blown

there may be another bad fuse, double check, are injectors spraying, if you spray throttle body will it start.

Testimonial: "helpful but not the solution. wont start even spraying throttle body"

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Related Questions:

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1answer

Start and quit running I can spray gas in the throotle bottle and it will say running while I am spray it

Must be your fuel pump has quit working. There should be fuel under pressure in the line to the throttle body, just by turning the key to on, not start. Not real high pressure like in multiport injected engines. Throttle body injection runs on about 20psi. If no pressure in your lines, find out why the pump is not working.
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How do I blow out the fuel line?

The fuel line runs from the rear of the fuel throttle body down the rear of the engine to the frame, along the frame to the fuel tank. It might have a fuel filter along the way on the frame, If so you can easily disconnect the line from the filter and blow from that point, back to the fuel tank, and forward to the rear of the throttle body. Make sure and disconnect the line from the throttle body so you don't damage the injectors or jam some trash deeper into them. Plus be careful blowing pressure into the tank, the fuel pump is in the tank and might be damaged from the air pressure. Good luck.
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Throttle body is not getting any fuel but sounds like the fuel pump is working

ive got the same problem in my 87 chevy r10 from what ive read its the fuel pump i tried changing the throttle body, and the fuel injectors and it doesnt seem to be the problem im getting gas to the line but i dont think its enough pressure ill be changing the fuel pump and ill let you know.
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Our ford bronco will not run new fuel relay, fuel punp works, new spark plugs, new filters, changed oil, we have spark, and compresion no fuel

Check to see if you have a Throttle Position Sensor. This would be on the Airhorn and works with the throttle butterfly. It is about the size of a butane lighter and has 1 electric connector and 2 screws.

This part sets the spark and fuel for the throttle position.
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86 olds calais only starts if i pour fuel in throttle body fuel pump is working, is their a fuel filter by the throttle body or could it be a relay

The fuel filter is under the car, in-line. If the pump runs, it wouldn't be the relay. When you try to start it, can you see any gas spray from the injector? You could have a bad injector. Check for power going to the injector.
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Got water in fuel tank,removed water from truckchanged fuel filter & plugs still will not start

was fuel pump changed and lines flushed---turn key on if fuel pump hums system should pressurize turn off and under hood check to see is gas is present in fuel line[have rag handy and press valve down at fuel test port which is in line between distributor and throttle body if no pressure filter clogged or pump not working -if fuel and water need to drain again -if fuel than need to test throttle body -spray some starter fluid into truck if starts or sputters than still have problem with fuel delivery --
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I have a 97 Blazer, just had the fuel pump replaced and worked fine. But in the cold weather it won't start. Any tips?

Try energizing the fuel line twice, turn the ignition key to the on position for 30 seconds then turning it off for 5 seconds and then try starting the engine. This will warm up and clean the MAF sensor, and also ressurize the fuel line if the fuel pressure check valve has failed and that is located on the fuel pump return line. Clean the MAF sensor will also help in the cod weather starts, so you may want to clean the MAF with MAF cleaner and clean the Throttle body with throttle body cleaner and pay attention to the Idle Air control valve passage ways at the back of the throttle body opening. Good luck and keep me posted.
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Will 87 s15 2.8l throttle body sorta run if fuel pump bad? changed fuel filter it was totally cloged. fuel ran out line with filter off- key on. engine will run a little. dont wanna waste time and money on...

If the punp is bad it won't run at all. Check the throttle body injectors to see if fuel is coming out of both injectors. Sounds like one of the injectors is not working. If one is not working you can check to see if it is the injector or wiring by switching injector wires and see if the problem changed from one injector to the other.
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Fueling

remove fuel line coming in and w/ a container handy have someone turn on switch. if it pumps into container fuel pump is ok. if not replace fuel pump. if it does. check filter on throttle body. if clean replace throttle body. hope this helps
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