02-07-2007, 08:15 AM
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#1258
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Scooby Guru
Member#: 135252
Join Date: Dec 2006
Location: Coral Springs, FL
Vehicle:2002 WRX Wagon
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Quote:
Originally Posted by sajohnson
Early on, the '02 WRX's had a hesitation/stumble on acceleration that seemed to be eliminated (or at least reduced significantly) by adding extra ground wires from the negative (-) terminal of the battery to various points under the hood -- strut tower bolts, intake manifold, firewall, etc.
I started a thread on this mod that was made into a 'sticky', IIRC. I think the title was "Miracle Mod" or something similar.
If you search for "grounding mod" you should find it.
BTW: The grounding mod really did seem to be a huge improvement, but IIRC the hesitation came back after a while.
My guess is that there are many causes of hesitation. Just a couple months ago I had the timing belt in my WRX replaced. I'm not sure why, but the engine ran much smoother afterwards. The only other work done was the drive belts were replaced.
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Ahhh. Thanks.
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