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Posted on Aug 23, 2009
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I have a 1990 Ford F-150 won't start .

There is a new fuel pump but is no fire getting to pump what can be problem

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  • Posted on Apr 17, 2010
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If it has dual tanks it might have a bad tank selector switch

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  • Posted on Aug 24, 2009
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Fuel pump shut off switch try this it is located behind passanger kick panal this should do it

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Anonymous

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  • Posted on Oct 13, 2009

SOURCE: i have an 89 ford f-150 cranks wont start got

Hi,
Since you're sure that you are getting gas and fire and timing is right... (also check firing order), has anything been done recently that could help you locate the problem? Such as removed distributor (could be 180 degrees out)? New plug wires (maybe crossed)?
All else I could recommend is checking cylinder compression (In case the valves are the problem)... The engine timing chain could need replacing...
Hope this helps... Good luck!

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Anonymous

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  • Posted on May 08, 2010

SOURCE: I dropped the fuel tank to drain old gas.I put new

Turn the key to the ON position without starting the engine. You should hear the fuel pump running for 5 seconds if working. This primes the gas to the injectors when doing this. If not heard running check the oil pressure switch for the 12 volts needed to run the fuel pump starts there on that harness. When the engine starts and the oil pressure reaches the normal pressure the computer shuts off that circuit and turns on the fuel pump relay to run the pump. The relay stays on till you shut the engine off

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Related Questions:

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1answer

F250 1990

Check your control module of your switch and check your big tank is working the fuel pump.
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Fuel pump continues to try to function when truck key is off.while key is off if i switch to opposite tank that pump starts to function even w/key off

fuel pump is going bad. or your pressure return is stuck. or your relay to the fuel pump is sticking .plugged fuel filter. bad ground to the pump. that is all i can think of besides a faulty key switch.but most likely its a pressure issue fuel injection needs a certain amount of pressure to fire the injector so when you change tanks the pump has a pressure change so the pump starts to keep up pressure. hope it helps
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1989 Ford F 150 has fire but won't start replaced fuel pump pick up and moduale. what else could it be?

You need to run a fault code test on the computer control module. To learn how go here. The code lists are there as well.
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We have a 1990 f-150 it wont start but will crank

Take some throttle body cleaner and spray it into the throttle body then try to start it. If it fires up for a second then shuts off you need to change fuel pump or fuel filter. If that dont work check for spark. check the distributers cap and rotor. Also check the coil to see if your getting any spark from there
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I have 1986 Ford F-150 that stopped running while driving and will not restart also it has backfired a couple of days before.

You need to check and see if the engine is getting fuel from the fuel pump and if you are getting fire from the ignition,if both are present then most likely the timing chain and gears are your problem
1helpful
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I dropped the fuel tank to drain old gas.I put new gas in and turned engine to start it didnt start. Should I be able to hear fuel pump if it is working?This is for a 1990 ford e-150 van.Also where the is...

Turn the key to the ON position without starting the engine. You should hear the fuel pump running for 5 seconds if working. This primes the gas to the injectors when doing this. If not heard running check the oil pressure switch for the 12 volts needed to run the fuel pump starts there on that harness. When the engine starts and the oil pressure reaches the normal pressure the computer shuts off that circuit and turns on the fuel pump relay to run the pump. The relay stays on till you shut the engine off
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F150 won't start

So you turned the key just to "Run" and hear the fuel pump running (guessing elec pump)? Did you pull off a spark plug wire to check for spark? If no spark, pull the Distributor cap and check inside of cap, and rotor for damage, if ok, then the coil is bad, replace it. If you have spark at the plugs, have you tried Starting Fluid? (old school, go to AutoZone for this)
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The truck died,it will fire then dies,its a 1990 with a 351 fuel injection.the fuel pump is working,changed the filter,there is fuel in the line for the injectors

check to see if you have a flapper valve that operates your feul injection if you do you might have to replace it.
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Fuel problem?

Sounds like a clog somewhere.
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