Question about Subaru SVX

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I have a 1992 Subaru SVX, converted to 5-Speed manual transmission. It keeps blowing the green 30A SBF fuse #2 under the hood fuse box. Also the fuse box is loose and wiggly, could this be causing the problem. I just bought this car, and seller replaced the fuel pump a week ago, and the pump does work. When car starts, it idles rough, then as you attempt to put it into gear and drive off it immediately stalls and will not restart. We did put in a 15A fuse with a pigtail and that fuse doesnt blow, so why is it blowing a 30A fuse. Any insight to resolving this dilemma will much appreciated, as I am stuck with a car I just bought that cant be driven. Thank you. Dan

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  • cow562yanks May 20, 2011

    Forgot to mention, it started overheating after 20 minutes of continues idleing, and reving it every twenty seconds or so. The whole engine was resealed and head gaskets done a couple hundred miles ago. Could the thermostat be bad. The upper radiator hose was cold, as was the radiator cap. Dont think coolant was circulating properly. Thanks for the input, I will try it out.

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  • Subaru Master
  • 19,396 Answers

The green 30 Amp fuse goes to the fuel pump. You can test disconnecting fuel pump (at the pump). If fuse does not blow, then the pump motor is shorting. If it does not blow, then check wiring and box soldering .

If the box is loose and wiggly, replace it in any case. Your risk to blow more expensive parts because of the fuse box.

About the pigtail fuse not blowing, the only explanation is that there is a short in the spots where the SBF fuse makes contact, and that the short occurs when you plug in the fuse. When you mount the pigtail it does not short. It should be the same with a 30A pigtail.

Have a look at the fuse pump wiring and repair or replace the fuse box. You can get one at the scrapyard for $10.

Posted on May 20, 2011

  • Ginko
    Ginko May 20, 2011

    Hi.

    The head gasket blows for a number of reasons, if problem was the thermostat, if thermostat has not been replaced, you would have noticed overheating again immediately after doing the head gasket job. Most common reasons for head gasket issues are: high mileage with insufficient maintenance, defective water pump, problem with engine fan (include thermostat), insufficient oil level etc.



    A defective thermostat or an head gasket issue obviously will not directly cause the fuel pump fuse
    blowing.The head gasket issue and the electrical (or fuel pump) problem
    are unlikely related. The fuse blowing is more likely caused by a short.

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Description

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Lamps

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10 9 8 7 6

12 11 10 9

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15 14 13

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