Question about 1997 Subaru Outback

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98 legacy outback wagon 2.5 litre electrical problem!

98 outback wagon-84,000mi- car had been overheated. Previous owner pulled heads &had them done and reassembled lower half of engine. Car sat for a year and a half. I got the vehicle and reassembled the timing gears/belt and intake along with all other remaining components. Engine turns over with no problem. Here's where the fun begins! Connect battery- everything normal. Turn key to run position- everything o.k except fuel pump does not run and check engine light does not come on(all other warning lamps come on & ABS light goes out after it checks system). Turn key from the run position to off position (are ya ready for this?) and the check engine light comes on(dim) all other warning lights(very dim), the cooling fan comes on, (not the ac aux fan) fuel pump runs, the electric windows stay powered up, and the temp gauge pegs itself to hot.This will continue until I either(A) turn the key back to on(B)pull the 30amp fuse labeled SBF 2 in fuse box under hood(C) disconnect the battery.What I have found when the key is cycled and the mayhem begins is that I am recieving 12.5+ volts at the double ground located on top of the intake(which I believe are computer grounds) 12.5+ volts at the fuel pump connector(under rear seat) 12.5 volts at cooling fan connector, 11+ volts on non powered side of SBF2 connector(with fuse pulled),11.7 volts on run terminal of ignition switch and 5.7 volts on the acc&start side of ignition switch.Also OBDII plug will not talk to computer when key is on.(seems to go dead). This apparent feedback does not blow any fuses.This only happens when the ignition key is cycled to run & then off. Just connecting the battery does not make this happen.(no voltage feedback thru any connectors and/or grounds). I have diconnected the 2 main connectors to engine harness & 2 connectors at trans harness, power lead to alt.& starter-and power window relay. Problem still occurs so I know it is not in the engine harness. I have pulled all grounds I could find, cleaned them and their contact points with sandpaper & reinstalled. Problem still exsists.Car does not have a remote starter or after market alarm system. It appears to be factory original. Previous owner said car was driven till overheated with never any electrical problems. Seems like some type of relay is being powered up when key is turned on and staying powered up when key is turned off sending a voltage feedback thru the electrical system. All wires/harness under hood/dash look fine. Nothing burned or chewed thru that I can see.(think mice) If mice chewed thru insulation and created a short then the vehicle should be blowing fuses which it is not(I could be wrong). Aside from pulling everything under the dash , I am not sure where to look next. Any help would be greatly appreciated.(Let the fun begin)! Thanks in advance to anyone who gives this a shot. Good Luck!

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3 Suggested Answers

  • 111 Answers

SOURCE: 97 Subaru Outback continually blowing the fusable link (30amp).

need more info as to which cicuit we are dealing with

Posted on Sep 13, 2009

  • 608 Answers

SOURCE: Here are the issues with my 2000 Subaru Legacy L

These assorted problems usually come from the control modules, in this case the transmission control module (TCM)
First, reset al ECM' by removing the battery negative terminal for a minute or so then re-fit it. This reset should cure all your problems. If not I shall consult my TSB's after you post the results of the reset.

Posted on Mar 26, 2010

bayyagg
  • 1672 Answers

SOURCE: 1991 subaru legacy sport (turbo).

Hi,
if there is no power coming out from the relay, that will be the problem. as you said it is new,check it manually by connecting the terminal into the power source and check the continuity of the the output from the source.
Sometimes there is new parts that has a manufacturer defect. try another relay.

Hope that helps you out!

Posted on Aug 14, 2011

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