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Old 11-10-2010, 08:37 AM   #1
35psitsi
Scooby Newbie
 
Member#: 218811
Join Date: Jul 2009
Default Intermittent Starting Issue

Hey all,

I have an '05 Impreza 2.5 N/A that has been acting weird lately. About a month ago, I was experiencing a misfire issue on rainy/foggy days only. I changed my plugs and wires with new ones and the problem seemed to go away.

About a week ago, I found myself outside the office and the car would not start. It would turn over of course but wouldn't catch at all. I tried to start it 3 times for about 10 seconds a try. I went back in the office to make a call, came back out and it started up right away on the first crank.

Last night I went to get some groceries, came out and it wouldn't start again! I cranked it for 10 second spurts about 5 times in the matter of 10 minutes. No start! I was starving at this point, went to grab a sub in the plaza while a friend I had called was looked for his OBD-II code reader to help. After coming back to the car, it started first crank.

That friend will be coming by tonight with the code reader but does anyone have any ideas that I might want to look for?

Thanks in advance.
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Old 11-10-2010, 09:41 AM   #2
acanadianreject
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Member#: 235679
Join Date: Jan 2010
Chapter/Region: NWIC
Location: Rain hell, WA (seattle)
Vehicle:
99 Legacy 2.5GT
Tuxedo Black

Default

make sure your distributor pack wired are going to the correct sparlugs, i found out the hard way that if you have 2 of them mixed u and d have a battery that is even slightly too weak, it will decide to not start also check the connection and clean both of your battery terminals... just letting you know what problems i have had on my 95 legacy ls na
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Old 11-10-2010, 09:50 AM   #3
Jessekrs123
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Member#: 236927
Join Date: Jan 2010
Chapter/Region: NESIC
Location: Oakville CT
Vehicle:
1993 Legacy Sedan
1984 BRAT

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A bad main relay could cause intermittent starting problems. When it fails to start, check for spark.
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Old 11-10-2010, 07:35 PM   #4
35psitsi
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Member#: 218811
Join Date: Jul 2009
Default

My battery is brand new and perfect. My plug wires are fine. Next time it happens, I'll be sure to check for spark.

Today it happened again somewhat. It took 6-7 seconds to start. Once it starts, it's perfectly fine. It's just the initial start. When this happened in my old Eagle Talon, my datalogger showed me a dead coolant temperature sensor but it was more of a consistent mis-start then this. I do't have a datalogger for this car and it's being tempermental.

I suppose checking for spark and fuel will be the first thing to try. Unfortunately, one minute it won't start, and the next it's got no issues starting. It makes it hard to see if spark/fuel is the issue when the problem itself isn't consistent.
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Old 11-10-2010, 08:15 PM   #5
spinningcain
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Member#: 176490
Join Date: Apr 2008
Chapter/Region: SWIC
Location: Las Vegas
Vehicle:
2005 STI
WRB

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Fuel pump /fuel filter.. Have you changed the filter lately? When it does it turn the key on and see if you can hear the pump prime
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Old 12-26-2010, 10:26 PM   #6
mkalov5
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Member#: 266118
Join Date: Dec 2010
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try a new coil. they are known to get hair line cracks in them. if u do get the car to start, spray water on the coil pack and see if u see any arc..if so..bad coil pack
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Old 12-26-2010, 11:47 PM   #7
ThaPuertoRican15
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Member#: 245018
Join Date: Apr 2010
Chapter/Region: NESIC
Location: NH
Vehicle:
01 WRSX
STM

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Quote:
Originally Posted by acanadianreject View Post
make sure your distributor pack wired are going to the correct sparlugs, i found out the hard way that if you have 2 of them mixed u and d have a battery that is even slightly too weak, it will decide to not start also check the connection and clean both of your battery terminals... just letting you know what problems i have had on my 95 legacy ls na
if the pacs were wired in the wrong order, the car would run like sh** regardless...he said once it starts, it runs fine...
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Old 12-27-2010, 12:03 AM   #8
sue's roo's
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Member#: 228787
Join Date: Nov 2009
Chapter/Region: RMIC
Location: victor id
Vehicle:
03 wrx
broken 3/4 of the year

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Starter contacts would be my bet.
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