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Re: toyota runs then stops
Yes, it could be the fuel pump. The cheapest way to fully diagnose the problem is to get to a garage and have them hook it up to a OB2 port machine and have them pull the code. That code will tell exactly what is going on. More than likley you will have to go to a garage to get this fixed if it isn't easily fixed. Could also be the fuel rail on the motor(injectors). Good luck.
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There is a switch in the airflow meter that keeps the fuel pump relay closed as long as there is airflow. With the meter unplugged, the pump should not run except when the key is turned to start. It would seem to me that you have a wiring issue. Try jumping the fuel pump relay so the pump runs whenever the key is on. (Remove the relay and jump the pump wire to the accessory wire--see top left diagram.) This defeats the safety feature but will keep the pump running.
whats your fuel pressure? you can be running low fuel pressure and the pump could be going also id check pressure regulator take your vacume gun apply vacume to it while its running if engine dies pressure regulator is good
Alright, i have a 1987 Toyota 4x4. it has a 22RE full injected motor..it was able to run, but it was running rich, and idling pretty eratic..and then now..it only starts up..and dies. after like 5seconds.
If the engine is actually starting and running for a very brief period of time before stopping it could be the fuel pump. A failing fuel pump can create enough pressure to get an engine started but not sustain it running. I had a Mercedes that required a new pump. This is how it started. Try turning the ignition to on several times and make the pump run several times. Then start the car and see if it runs longer before dying. If so I would see if there is any way to get a pressure check. Depending on the mileage it may be worth changing anyway.
I had this on an Accord I bought as a project. It had been sitting for a while. I'm not suggesting that you have all of these problems, but check this out. I ended up having a split in the seam of my fuel tank, my strainer on my fuel pump was almost clogged up and my fuel pump was corroded. I don't know how the car ran at all. It would run fin when my tank was full, as soon as it got below half then it would stall at stop lights and during sharp turns.
If the problem of your car is the fuel filter .You have to locate the fuel filter and prepare the equipment or tools to be used in checking the or repairing the fuel filters.there are two filters , the primary filter and the secondary filter.Disconnect the fuel lines at fuel filter observe safety practices. if the present fuel filter is dirty and not any more use full then replace and install new fuel filter. If the problem is the fuel lines then you have to locate the fuel pump then prepare the tools or equipment to be used in servicing the fuel lines.Visual inspection on duel line for learage.Disconnect lines at fuel pump and fuel tank.Use compress air to remove sediments on fuel lines .Re install fuel lines to the unit.Locate the fuel pump . Prepare the tools or equipment in repairing the fuel pump.So that fuel pump will operate properly. locate the fuel pump.Disconnect the fuel lines from the fuel pump.Remove fuel pump from the engine.Dis assemble fuel pump.Check daiphram for defects .Replace defective parts.Assemble and install fuel pump.If you don't have time to do it then it is advice. that you go to the toyota car shop and let the mechanic to do the job .One of the kind of engine that I studied as a mechanic are toyota 3K ,and 4K .
remove the hose to the throttle body and spray some fuel spray in it.if the engine starts then dies out,it is more than likely your fuel pump.
check that the wire going to the fuel pump is getting voltage and that the fuse and relay are good.fuel pumps will die just like that.never run less than 1/4 tank...the pumps use fuel to keep cool
check inside the frame rails (inside). there is a screen on the fuel pump and usually a filter in-line on one of the fuel rails. if not, follow the fuel line into the engine compartment and you should find it.