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2001 Dodge Ram 1500 Question: theres a vibration

 

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pats327, Mooresboro, NC, May 28, 2013, 14:05
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between 40mph and 55mph there's a vibration like a wheel is out of balance when the o/d is on but goes away when o/d is turned off what would cause this

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    May 28, 2013, 15:05
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     Master

    Check engine light on or flashing? Vibration or a fast jerking like a misfire? Misfire more likely to show up in OD than other gears, more load on engine/ignition system.

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    pats327, May 29, 2013, 05:57
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    there's a misfire on #1 and #8,changed the cap and rotor[yesterday] and put new plugs and wires on about 6 months ago but still have misfire on #8.could bad cap cause wire or plug to go bad?

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    pushrod, May 29, 2013, 07:34
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    Wires crossed? V8? Cause firing order is 1-8-4-3-6-5-7-2. 1&8 can easily be crossed. Try swaping wires between 7&8 to see if misfire follows wire. 7 is rear plug on left, 8 is rear plug on right. If misfire does change with wire replace wires, if not then check plug, compression and injector pulse or have this checked!

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    pats327, May 29, 2013, 18:45
     Rookie

    put new wires and plugs in but the vibration is still there between 40mph and55mph.now also when I gas on it the check engine light blinks but goes off.it's a 2001 5.2/318 v8 with 100250 miles next thing is a compression test.what should the compression be?

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