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Old 10-26-2015, 07:28 PM   #1
Scooby Newbie
Member#: 303079
Join Date: Dec 2011
Chapter/Region: MAIC
2004 Forester XT
Red Pearl

Default 04 Forester XT Starts then Dies Immediately

I promise I searched.

Actually not only did I search, but I've been trying to fix this for a while now and still no avail. Please understand, I'm not a noob, I'm just stumped and need some new ideas.

Before I parked my car this issue was not present at all. I installed a VF39 on my FXT. While I was in there, I removed the intake manifold to redo the fuel lines, because they leaked on cold mornings, and this was a perfect time to take care of that. Everything all back together, happy with my work, etc. Go to start the car, and it fires up beautifully after priming the fuel pump, but proceeds to die as soon as the revs fall. "Odd." I think. So I start it again, same thing. Car starts, sounds good, revs climb to about 3k, before falling as they normally do when a car settles into idle, except that mine doesn't even try to idle, it just falls off and dies. If I hold the throttle down, I can keep it alive but not healthily. When I do that it sounds like it's running on 2 cylinders, with the occasional 3rd firing randomly.

My first thought was fuel. Maybe I'm an idiot and criss crossed the fuel lines going to the regulator. So I take off the alternator/powersteering pump/ac compressor/inlet tube to double check my work. Looks good, but just to be sure I'll look up a diagram and compare it. Nope, all lines located where they're meant to be. Put everything back together just to see if it would magically work now. No such luck.

Next thought was that I forgot/screwed up an intake connection, causing a massive vacuum leak. After two days of looking over, disassembling and reassembling everything to do with the intake, I'm satisfied that this isn't caused by a vacuum leak.

I've seen some people have this issue with a bad maf, but as mine was working when I parked it, and I'm religious about step 1 in any job being "disconnect the battery", I'm assuming mine is still good and not the cause of my problem.

Please, if anyone has any ideas, throw em out there. What could I have touched while doing this job that could lead to this issue??

Oh and for what it's worth, no codes yet. I'm not surprised though, it doesn't run long enough for me to even expect a code to come up. No pending codes either.
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