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RPM needle bouncing + hesitation 700

posted by  Bryan.C on  Sat Jan 8 05:34 CST 2005
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last visit: Sat Oct 18 19:41 CST 2014
[RELATED]

What conditions cause the RPM needle to fluctuate?

My wife said that it was moving all over. The 1991 740 wgn jerked, hesitated, missed... I don't know how to describe it... just twice when I drove it home. The RPM needle seemed okay. I didn't hear a backfire or anything like like. For an instant I thought maybe it was the transmission failing. Engine starts okay. Idles okay. Jerked twice when I first started to acceleerate into traffic onto the hwy . then everything seemed okay again. Then it hiccuped twice again after 10 miles of smooth driving. That's too "intermittent" for me to get a grip on. Spark plugs look okay but I changed them anyway. I need some troubleshooting advice. Thanks.





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