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Lincoln car 2003 fuel pump good all sender good but fuel injector not spraying why

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Your question states that the fuel pump is good. If you are sure that your fuel pump is good, then it's time to look into your "fuel injector not spraying". Also check all your fuses. It would suck if it's just a fuse :-). Go to your local parts place like advance or autozone and pick up what is called a noid light. This little light plugs into the connector that plugs to the injector. Crank the engine and see if the light flashes when you crank. If the light flashes, check a few others to make sure they work also. That means you're getting an injector pulse and they should be spraying. Look into a fuel pressure problem. If the light does not flash, obviously you are not getting an injector pulse. The sensors that would affect an injector pulse are cam sensors or ignition module. You vehicle may have one or both of them. The crank sensor contributes to spark and cam sensor to injector pulse. Check that you have crank signal also in case you gave multiple problems. Those sensors send signals to the computer but ultimately the injectors get their signal from the computer. If all else is good then it's possible that you may have a bad EM (computer). Further diagnostics may be necessary to determine that. I hope this information has helped some. Good luck.

Posted on Apr 23, 2017


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Posted on Jan 02, 2017

bigg t
  • 640 Answers

SOURCE: fuel injector not spraying fuel

Check the fuel pump relay in a black box under the hood.

Posted on Jul 23, 2008

  • 99 Answers

SOURCE: Fuel Injector Wont Spray

check wires at throttle body. can use a 12 volt test light to check for current. if you have spark it is not the ign module. set meter for 12-20volts. should have 2 fuse boxes on this model, one behind right side of dash at floorboard

Posted on Nov 30, 2008

  • 31 Answers

SOURCE: 85 s-10 2.5l no fuel from the injectors

electronic engine control unit calculates the mass of fuel to inject, not how wide it sprays. It's the type of solenoid that you use. Some have wider spray nzzles than others. An external Fuel pump helps the delivery of the fuel. Also since fuel injectors rely on mass air flows nowadays, you have to have proper mixture coming through. hows your Fuel pressure regulator?

The throttle position sensor reports to the computer the position of the throttle butterfly valve, which the ECM uses to calculate the load upon the engine-but inorder for this to run, you may need an external pump.

Sounds like nothing is being grounded back to the ECM to even give a reading. If your regulator is improper and you do not have a external pump (depending on your model), than check those. If not, Start from scratch.

If you ever lose your way, go back to the beginning_REWIRE!


Posted on Feb 16, 2009

  • 3489 Answers

SOURCE: 1998 Lincoln Town Car cranks but does not start.

possible just not probable. you need to see if there is any pressure to fuel rail. if not youre going to have to by pass the fuel pump and see if it is getting voltage. if so then apply a seperate voltage and ground wire to the pump to see if it kicks on. come to think of it, it could be the PATS system(security) that shuts down the system. it will crank but will not fire. your ford dealer will need to reprogram the system.

Posted on Nov 03, 2009

  • 236 Answers

SOURCE: '94 S 10 Blazer V6 Vortec EFI. Fuel pressure

your statement is fuel pump work ok, have you tested for proper fuel pressure. just because the fuel pump works it could have less pressure needed to start the engine. maybe the fuel filter is plugged. start out by replacing the fuel filter, if this doesn't fix it, you need to pressure test the pump. even 10 psi reduction in pressure will allow the engine not to start.

Posted on Nov 05, 2009

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