Question about 1990 Ford F150

1 Answer

1990 ford F150 4 x 4 5L

I have fuel to the fuel rails but not the injectors, the fuel pump keeps running?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Ford Master
  • 77,499 Answers

Then the engine fuse may be blown it will be marked ECM I think, the fuel pump and injector circuits are two seperate systems, the fuel pump most likely has a stuck relay.

Posted on Oct 21, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I have a 1990 ford f-150 4x4 that is not getting fuel to the engine. I have changed both fuel tanks and pumps, checked the fuel filter and relays. Please help.

A mechanic would check the injectors for voltage and for a ground signal from the computer.
The injectors get power from the EEC relay near the battery.
The ECM computer gets a signal for the coil and the injectors from the module mounted on the side of the distributor.

Jul 17, 2012 | 1990 Ford F150

1 Answer

Fuel pump will run get fuel to fuel rail but not to motor

fords run two (2) relays for the fuel system one runs the fuel pump and the other runs the injectors so buy one relay and just switch one at a time you will be up and running in no time.Hope this helps you.

Jun 03, 2010 | 2000 Ford Focus

1 Answer

'90 F-150 with 5.8 engine acting like no fuel to keep engine running. have replaced distributor cap and double checked the fuel shut off valve located underneath the foot petal and still acts like not not...

check you fuel pressure at the fuel rail, if you have pressure (witch i doubt) then look at injectors, otherwise start with the cheap stuff and work up to others, start with a fuel filter and if that dont help look at a in tank pump or the high pressure pump.

Jan 25, 2010 | 1990 Ford F150

3 Answers

My 1990 nissan hard body d21 short bed truck wont start only if u add starter fluid

fuel pump and fuel sock is bad replace them but first replace the fuel filter, it's located driverside on the inside of frame rail under door.

Aug 14, 2009 | 1990 Nissan Hardbody King Cab

1 Answer

1990 escort LX, automatic trans, #9 engine code,wont keep running

replace the injector or try some injector cleaner ,the petrol went manky when vehicle was left for so long ,and now i suspect its gummed up like the pump was

Mar 28, 2009 | 1990 Ford Escort

2 Answers

I got a difffernt injector pump and now my truck won't run

I am hoping this truck is a gas engine. If so probably a 460. The truck has a fuel pump in the fuel tank or tanks if so equipped. There is a fuel rail at the front of the engine that feeds the injectors. On this fuel rail you will see a plastic cap that looks like a cap on a valve stem to a tire wheel combo. Remove this cap, if you turn the key to the on position you should have air out at first and then fuel. Be very careful not to ignite the fuel coming out. Use something to catch the fuel as it begins to come out.

Feb 12, 2009 | 1990 Ford F350

1 Answer

Wont start overfueling

Try squeezing the flexible fuel hose so that just enough fuel gets through to the engine to allow it to run,If you get vehicle to run then its a supply of power to the injectors keeping them spraying large amounts of fuel,pressure relief valve has failed or lost ability to relieve pressure in fuel rail or fuel return line is blocked.Some fuel pumps are capable of supplying excessive pressure but vehicles own relief should be working.Also dirty or unservicable injectors can give you the symptoms you describe.Let me know how you go

Nov 16, 2008 | 1990 Ford Probe

2 Answers

Fuel problem?

Sounds like a clog somewhere.

Jul 21, 2008 | 1990 Ford F150

Not finding what you are looking for?
1990 Ford F150 Logo

349 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers


Level 3 Expert

5626 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides