Question about 2000 Subaru Outback

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1994 s-10 Vortec. Shuts down. Periodic.

I recently changed 'spider' and fuel filter. Cranks fine, then when you pull off, the engine shuts down. Can keep it going in neutral most times, if you floor it, it will rev to 2500 or so with no issues, then reaches a point where it just backs down to 0 and cuts off. Can sometimes resuscite by patting accelerator. It almost always happens on startup. You know in 15 seconds if you are gonna need to turn around. Will sometimes self correct after sitting awhile, but you never know if its gonna run on the next trip. Mechanic says fuel pressure good, but it won't ever cut off when he has it. Fuel pump loud, can hear it running. Problem seems to happen more with 1/4 tank or less. Trash in tank? Fuel pump? Relays?

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  • Marvin
    Marvin May 11, 2010

    what is a spider?



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I had a similar problem with My 94 S10. Are you geting black smoke and does the smoke smell really rich like gas?

If this is the case you may need to open up your plennum again where your spider injectors are and take a look at the fuel lines themselves. They are pre-formed by the factory and come into the plennum near the back left right side of your motor. Leave the battery connected and have someone go into your truck and turnthye key to the "ON" position, you know where the fuel pump primes the lines, and check to see if those lines are spraying into your motor. Mine had hairline cracks in them but because they are under like 75psi they shot gas like crazy into the motor making the truck run SUPER rich and it was hard to keep it started.

This could be why your mechanic says that you have good fuel line pressure, cracks in your lines may be too small to make a huge difference in the pressure reading, but all that extra fuel being dumped in your motor will really give your ECU a hard time.

The bad thing is since these are a factory part, you may have to shell out some $$$. I think I paid like $85??? for mine, but that was back in 2003.

I hope this helps! Good Luck!

Posted on Feb 12, 2009


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