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99 2.5RS, Black
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subie running like shit - YouTube

Heya, my team and I have tried everything we could think of so far with our 99 2.5RS but it's still running very poorly. We checked the fuel filter, changed the timing belt and set the timing, checked all the major sensors, and some other stuff, but the car is still running horribly. We were hoping to take it ice racing tomorrow but it doesn't look too good. Does anyone have any ideas about what might be causing these problems?
 

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00'RS/02' WRX stgEleventy
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2,144 Posts
First thing that comes to mind is the MAF.. try starting the car and unplugging it.. if it runs better you know..

Sent from an other planet (Tapatalk)
 

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sounds like not enough fuel is reaching the combustion chambers. Check your fuel feed. Those hoses might be clogged and replaced with some new ones
 

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00'RS/02' WRX stgEleventy
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2,144 Posts
There are other sensors.. the MAF is just one.. start unplugging things.. all you can do is stall the car and throw it into limp mode.. which resetting the ECU fixes

This is how I found a wonky MAP sensor (my 02 runs BOTH)

Sent from an other planet (Tapatalk)
 
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