Question about 1994 Subaru Legacy Outdoor

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94 Legacy Wagon stalls on grade

My '94 Legacy Wagon always stalls on steep grades when it's cold and intermittently stalls when it's warm.

It starts to strain on the steep hills then goes slower and slower until it finally stops. That probably takes less than 20 seconds. I can then immediately start it back up and it drives just fine.

In the attempts to fix this problem I have changed the fuel filter and the oxygen sensor but the car continues to fail on grade. I appreciate your insight into this problem.

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  • IdentityCris Jul 17, 2008

    I have the same prob on a '94 Subaru Legacy LS sedan. Runs very good then stalls on even a small hill. Starts right back up. It also is jerking arounding 2000 rpms, struggling to change gears?

  • jvriley621 Aug 07, 2008

    My ' 94 Subaru stalls on steep grades and will usually start back up and then run fine.We changed the fuel filter but it did not help.I did put some fuel injection cleaner in the gas tank, and it does'nt seem to stall as often now.


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Same problem on my Sub 91 Liberty. Changed the ignition coils and it went great guns for about 3 months but problem has come back, however the stalling isn't nearly as bad as before. Earlier I changed the alternator+battery, spark plugs and leads. This had no affect on the stalling.My fear of hills is returning.

Posted on Feb 14, 2009

I would check the mass air flow senor and any vaccum lines connected to the air box and or intake

Posted on Jul 02, 2008

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Sounds like it could be some water in your Carb, i would recommend cleaning it out, Also it could a blocked air filter

Posted on Jun 03, 2008

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