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Old 04-01-2003, 03:28 AM #1
Fuggrwe Fuggrwe is offline
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Idle shaking

Why does my 3.4L idle rough, whats the dillio???
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Old 04-01-2003, 09:22 AM #2
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What year is your 4Runner?? My '02 is rather smooth when at idle.
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Old 04-01-2003, 04:28 PM #3
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It's a 97 SR5, it was smooth until about 3 days ago, then I noticed a bit of shakiness.
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Old 04-01-2003, 06:03 PM #4
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In various vehicles. I've seen rough idling from a number of causes. Simple ones to fix:

- Loose spark plug wire
- Loose distributor
- Poor quality gas (not as prevalent as in the past)
- Obstructed fuel filter
- Incorrect timing, fuel mixture, or idle speed (sometimes hard to figure out with the computers used nowadays)

Others that may be more complex to fix:

- Dirty fuel injectors
- Vacuum leaks
- Bad plug(s) or plug(s) with incorrect gap

Before you think differently, these are in random order.
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