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Guest Message by DevFuse
 

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Hesitation

hesitation outback sport 2002

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7 replies to this topic

#1 SpaceCase44

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Posted 21 July 2014 - 04:33 PM

I have a 2002 Outback sport. I began having hesitation problems about one year ago. The hesitation would only occur after a fuel fill up and last for about 1-2 minutes then gone. Did not occur at idle, only when driving. Now, I've been having the issue at varying fuel levels regardless of fuel fill up or not and the hesitation appears to be worsening. The Knock sensor has just been replaced with no improvement in the hesitation. 

I've suspected the fuel filter, water in the fuel, what else? Any thoughts?



#2 Dinky26

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Posted 21 July 2014 - 04:57 PM

Fuel pump possibly.



#3 Rooster2

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Posted 21 July 2014 - 05:25 PM

replace fuel filter first, see it that helps. If not, then suspect fuel pump as dinky suggests.



#4 Mr.Atlantis

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Posted 21 July 2014 - 06:16 PM

Is this a year where the Fuel and Filter is a combo unit?



#5 Fairtax4me

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Posted 22 July 2014 - 09:23 AM

02 still has the filter under the hood as far as I know.

How old are spark plugs and wires? Air filter? PCV valve?

#6 1 Lucky Texan

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Posted 22 July 2014 - 09:44 AM

^^^ look for oil in the plug tubes too.

 

might not hurt to try a tank with a bottle of Techron, or maybe SEaFoam too.



#7 CNY_Dave

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Posted 22 July 2014 - 10:55 AM

I think I recall an emissions equip problem that would fill the charcoal cansiter with gas when filling/driving, which would then cause a too-rich condition.

 

Sound familiar to anyone?



#8 1 Lucky Texan

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Posted 22 July 2014 - 11:47 AM

^^^ hmmm, I think I read where there was a weight limit on how much a canister could weigh. maybe find that value and pull the canister and weigh it? Saturated cansiter would weigh a lot more than 'dry' I'd guess.

 

maybe the gas tank's vent valve stuck open would lead to this? Or a malfunctioning Purge valve?


Edited by 1 Lucky Texan, 22 July 2014 - 11:48 AM.






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