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adam c rose Posted on Dec 03, 2013
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Just replaced the sending unit in my 1989 ford escort. getting fuel up to the injector but the injector isnt doing anything. whats the problem?

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montehammons

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  • Ford Master 5,531 Answers
  • Posted on Dec 04, 2013
montehammons
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Check the injector circuit with a test light. Here's how: Turn key to on, not start. Ground the lead of a test light to a ground source, pull the electrical connector off an injector. There will be a power wire and a ground wire to each injector. With key on, power wire should have voltage. Probe the electrical harness to see if one of the injector terminals has power. Tester should light up. If nothing, check the injector fuse- under the hood or under the dash. The injector drive circuit (the hot side) should have power to the injector with key on. If not, check the drive circuit for a fault.

If the drive circuit works (the tester lit up on one terminal), then check the ground circuit. Move the test light clip to the positive post of the battery. Now probe the other terminal of the injector connector, the one that did not light the tester, and have someone crank the engine over. If ground circuit is working, the test light will now be blinking. If both tests are good, a steady light on the drive circuit, key on, and a blinking light on the ground circuit with engine cranking-then injector circuit is good.

5 Related Answers

Anonymous

  • 702 Answers
  • Posted on Aug 21, 2008

SOURCE: wont start

Make sure that you're getting spark. A very common thing on these engines are coils going bad. If you can verify spark, check to make sure you have an injector pulse. As you rotate the engine, look inside of the throttle body and make sure that you see fuel pulsing into the engine. You can still have good pressure but you don't have an injector pulse, the fuel still cant get into the engine. You can use a test light as well to test for an injector pulse. One wire going to the injector will have constant power and the other will blink when the engie is rolled over. Does it start if you spray starting fluid into the throttle body? If it does, it's a fuel delivery problem. Again be sure you have spark from coil to distributor and plugs. You can remove the ignition module and take it to NAPA and they have a module tester. Have them test the module several times not just once. This will eliminate the possibilites of an intermitted problem. Let me know how it does. [email protected]

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Jean Leblanc

  • 151 Answers
  • Posted on Sep 09, 2008

SOURCE: 1989 ford escort cabriolet gearbox oil

is it manual tranny? if so u do so under the car by removing the fill up plug which is located on the side of the tranny on driver side of the car if i remember. The plug under the tranny is to drain it.

If u drain it, when u fill it back up, u do so until oil slightly spills out by way of that side plug.

RJones1125

Rick Jones

  • 373 Answers
  • Posted on Feb 25, 2009

SOURCE: Help replacing fuel pump and sending unit 79 Ford Fairmont

you should have two metal bands/strapes hold the tank in place, a bolt on each end of the strapes. disconnect the fill neck, supply and return lines, the wires for the pump and sending unit. if possible get the fuel level as low as you can. gas is heavy. lift the car up as far as you can, i say 2 and a half to 3 feet off the ground. a car lift is even better. the fuel pump will be held in place with a ring, use a hammer and punch to drive the ring counterclockwise to remove. don't let any dirt go into the tank.

c17hydro

Greg Bernett

  • 2993 Answers
  • Posted on Mar 17, 2009

SOURCE: torque settings for a 1989 ford escort, 1.9L

The answer is tighten the bolts to 17-22 ft lb

Anonymous

  • 2 Answers
  • Posted on Aug 21, 2009

SOURCE: 1989 honda prelude no fuel getting to injectors

probably the main relay. under the drivers side dash

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