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Posted on Oct 09, 2017
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Subaru legacy 1990 GT wagon(japanese),check engine

My legacy is idling bad, i noticed that the first injector pulse is weak ,compared from the other 4. everytime i put another computer, the check engine dissapears,and the engine idles normal again , but after 15 or 20 minutes of driving , the check engine comes again and it idles bad again, can you tell me what the problem may be?
thanks Damien.

1 Answer

Gary

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  • Expert 111 Answers
  • Posted on Nov 17, 2017
Gary
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Joined: Sep 30, 2008
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Sounds like you may have a bad spark plug and or wire, check the wires and plugs, if it's been more than 30,000 miles sence your last tune up, you should do a tune up anyway it may fix your problem.

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Anonymous

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SOURCE: Dashboard lights have gone out

Check the fuse for it.
Under the dash.
Look in your owners manual

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alicantecoli

Colin Stickland

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  • Posted on Dec 19, 2008

SOURCE: 1995 subaru legacy - transmission fluid dipstick?

find the dipstick ,its their somewhere lurking and yes the transmission fluid goes down the same hole ,,,chock drive wheels handbrake on warm engine(running) with reverse selected to check trans oil level

Anonymous

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  • Posted on Feb 05, 2009

SOURCE: Subaru Outback - '03 boxer 2.5L engine sounds like a diesel

heavier oil if you are not in a cold climate. but before you do that have the oil pressure checked. We used to use a can of STP every once in a while on a motor in a dodge we had... nothing wrong with it... was just noisy.

Robert

danhunt

  • 22 Answers
  • Posted on Jun 14, 2009

SOURCE: Need a free on line repair manual

Try this online PDF download for the 96 legacy:

http://www.onlinefreeebooks.net/automotive-machinery-power-equipment-ebooks/subaru/1996-subaru-legacy-service-manual-owners-manual-service-supplement-tsb-pdf.html

Anonymous

  • 4088 Answers
  • Posted on Sep 15, 2009

SOURCE: '97 subaru legacy L,AWD wagon, 2.2L, auto trans.

Do you hear a 'click' when the key is turned to start? Have someone try the key while you listen under the hood. It should be the starter solenoid clicking. You need either a test light or voltmeter to test further. One large terminal on the solenoid has the large wire from the battery positive, and should always show voltage/light at all times. Test the other side of the solenoid (large terminal) that is connected to the terminal on the starter motor. It should show light/voltage when the key is turned. If it doesn't, the solenoid must be replaced. If it does show light/voltage, then the starter motor is defective (probably brushes). If you get no click when turning the key, test the small terminal on the solenoid, you should see a voltage/light change when the key is turned. If you see a change, but no click, the solenoid coil is open or the case of the solenoid is not grounding where it is mounted. Try loosening the mounting and re-tighten. If no help, replace the solenoid. If you see no change at the small terminal, remove the wire from it and using a spare piece of wire, touch the small terminal to, first, the large terminal that the battery is connected to, then to the the mounting bolt for the solenoid. If the solenoid is good, the starter should operate with one of these two tests. In that case, the starter position of key switch is open--replace the ignition switch.

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WHAT WOULD CAUSE NO INJECTOR PULSE 1999 SUB 2.2L LEGACY L

Seems as though you have a wiring problem if your injectors have no ground.

I suggest you check the wiring diagram to see how the injectors are grounded. If they are grounded by a common point on engine or chassis repairing or duplicating it should be straightforward but more complicated if both the injector pulse and the ground are provided by the ECU.
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