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Old 02-11-2011, 11:38 AM   #1
BlackJavaPearl04
Scooby Specialist
 
Member#: 198522
Join Date: Dec 2008
Chapter/Region: Tri-State
Location: Up State NY
Vehicle:
98 LGT Limited
00 LGT -WRX swap

Default 98 OBS: Intermittent cold starting problem

Hi guys,

I have an 98 OBS I bought back in the summer of 09. With it came a problem that the owner had disclosed to me. The problem was that when outside temps got below freezing... say under 25 degrees. The car would not start. So as I said I bought the car in the summer time. I drove it for the remainder of the summer, fall and then into 09/10 winter. One cold morning I go outside to start my car.... it doesn't start. So I remember the previous owner telling me that his mechanic mentioned that it could be the fuel pump. I did notice that the pump was not kicking on with the ignition switch. So i take the pump out and switch it with a stock wrx pump. viola car starts right up. I drove the car for the remainder of that winter without issue. Now its 10/ 11' The car has been starting in 0-10 degree weather just fine up until 3 days ago when I went to start it and it didnt start. So we took my GFs car to work. After I got home around 5, I went to start my car and it fired right up. So I put it in the garage to see if it would start the next morning, and it did because it was above freezing in my garage. I drove it to work that day. I went to go to lunch and the f'n thing would not start. (no fuel pump priming noise) I come back from lunch (the sun is now beating on the car) and it fires right up (fuel pump came on with ignition switch). So here I am today and the same thing has happened.

I suspect water is getting into my pump or fuel line keeping pressure on one side of the blockage and keeping the pump from coming on?

What are your thoughts guys ? Sorry if Ive over complicated my story lol
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Old 02-11-2011, 01:39 PM   #2
yarrgh
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Member#: 80465
Join Date: Jan 2005
Chapter/Region: RMIC
Location: Aurora, CO
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2001 2.5RS
Black Diamond Pearl

Default

Water in there is a definite possibility. You can fix that with some heet or seafoam or many other products that can absorb water.
It also could be a loose electrical connection somewhere that is happy only when it's warm-er (expanding metal).
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Old 02-11-2011, 01:40 PM   #3
BlackJavaPearl04
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Member#: 198522
Join Date: Dec 2008
Chapter/Region: Tri-State
Location: Up State NY
Vehicle:
98 LGT Limited
00 LGT -WRX swap

Default

well, the car just sat in the sun for an hour, warmed the cabin up a bit. I went out to start it and she fired right up...the fuel pump came on with the ignition switch...next time it doesn't start I'm going to test the voltage to the fuel pump. Though im sure i heard the relay come on earlier, but not the pump. Anyway im still open for suggestions. thanks
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Old 02-13-2011, 03:38 PM   #4
BlackJavaPearl04
Scooby Specialist
 
Member#: 198522
Join Date: Dec 2008
Chapter/Region: Tri-State
Location: Up State NY
Vehicle:
98 LGT Limited
00 LGT -WRX swap

Default

bump any other suggestions
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Old 01-06-2012, 12:16 PM   #5
BlackJavaPearl04
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Member#: 198522
Join Date: Dec 2008
Chapter/Region: Tri-State
Location: Up State NY
Vehicle:
98 LGT Limited
00 LGT -WRX swap

Default

i think I solved this problem....i have a leaky windshield, as rust has over come the perimeter compromising the seal, I believe the problem is when it leaks, the water gets onto the fuel pump relay and freezes up? The leak has since stopped and i have not had any problems. Weird stuff man!
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