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My 4Runner is bucking/ lunging

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Old 01-03-2009, 08:49 AM
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My 4Runner is bucking/ lunging

When i'm driving and I get in like 4th or 5th gear my 4runner will start lurching forward a little bit every few seconds, just enough to be annoying. It only happens when i'm on the gas, it does not happen when I'm deccelerating. Does anybody have any idea what the problem is?
Old 01-03-2009, 08:50 AM
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it could be your clutch slipping, it may be time for a new one
Old 01-03-2009, 08:56 AM
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timing, plugs, o2 sensor...
have you checked for any trouble codes?
Old 01-03-2009, 09:06 AM
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I had that problem but it was in all gears, my cap and rotor were toast. The rotor was worn down so far I could look at it the wrong way and it would fall apart heh
Old 01-03-2009, 10:35 AM
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could it be something to do with some aspect of the fuel system?
Old 01-03-2009, 10:40 AM
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I'd look into the fuel filter.
Old 01-14-2009, 12:12 PM
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i'm bringing it to a mechanic tommorrow, i hope it's not something to bad.
Old 01-14-2009, 01:15 PM
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I had something like that happening for a while and finally got it fixed. Took it to the mechanic just last week he ran the code and it was misfiring and it was a cracked spark plug, fixed the problem completely.
Old 01-14-2009, 01:32 PM
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I think your truck has bronco syndrome...
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