Skipping Feeling When Applying Throttle
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This is a discussion on Skipping Feeling When Applying Throttle within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I've had my first WRX (02) for about 5 days now and on the way home from buying it I ...

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    Skipping Feeling When Applying Throttle

    I've had my first WRX (02) for about 5 days now and on the way home from buying it I felt a kind of skipping feeling when I would be going down hills with the cruise control on. Didn't really think anything about it because I didn't feel it in any other situation. Now today I've been driving around (AC on again) and I'm feeling it randomly like once or twice every 5-10 minutes, the idle also feels very slightly more rough.

    Is this just something that the WRX does when the AC is on, or is it maybe a spark plug/coil issue.

    Background info: The car has 84100 miles, single owner, has only been driven about 5k miles in the past 2 years, I replaced the alternator belt yesterday. I have maintenance records from the previous owner and one of them says that it is recommended that the car gets a new fuel filter and fuel injector cleaner ran through it.

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    Registered User Miggs's Avatar
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    Try cleaning the MAF. I had this problem periodically in my 02

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    Quote Originally Posted by Miggs View Post
    Try cleaning the MAF. I had this problem periodically in my 02
    Thanks - I'll be trying this either tonight or tomorrow.

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    Just cleaned the MAF, have yet to drive it though.

    Important update: Changed my rear differential fluid and found a number of what looks to be the tips of gear teeth. They are about a centimeter long and a millimeter tall and wide. I would think the feeling that I am experiencing is the diff going out, but I only feel it when going straight.

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    \_(ツ)_/ Rambo's Avatar
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    Uh oh, let's hope this isn't the tip of the iceberg...

    Regardless of what's causing the stumbling, finding any sort of metal in the differential oil is bad news. I would budget a replacement right away. While you're at it, replace the transmission and engine oils and get a Used Oil Analysis from Blackstone Labs or the like.

    As an FYI, even on my stage II bugeye, the AC compressor did cause a noticeable dip in power.
    Isaac -- 2003 WRX sedan Stg II - Gave its life for mine 6/2013.
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    Quote Originally Posted by Rambo View Post
    Uh oh, let's hope this isn't the tip of the iceberg...

    Regardless of what's causing the stumbling, finding any sort of metal in the differential oil is bad news. I would budget a replacement right away. While you're at it, replace the transmission and engine oils and get a Used Oil Analysis from Blackstone Labs or the like.

    As an FYI, even on my stage II bugeye, the AC compressor did cause a noticeable dip in power.
    Great, anybody have an idea on how much the install of the rear diff would run?

    I know what you mean by the dip in power, but it isn't that. Its more like a random skip, like one of the cylinders doesn't fire every so often or something.

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