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O/D Jerks at 1.5 rpm O/D Jerks at 1.5 rpm
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  #1  
Old 08-02-2005, 07:04 AM
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Join Date: Aug 2005
Location: North Carolina
Vehicle: 2001 Ford F150
Posts: 3
O/D Jerks at 1.5 rpm
While cruizing along in O/D my tranny seems to jerk or lunge?...? but only in O/D and at low rpm's 1.5 to 2, straight aways and inclinces. Once I kick it down I never notice this "jerk / lunge" in other gears. Early mornings I don't notice it, but once the truck is warmed up, it kicks in. Any thoughts as to why this jerks?
2001 Supercrew 5.4 4x4 78m.

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  #2  
Old 08-02-2005, 10:20 AM
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Join Date: Jul 2005
Location: Sugar Land, TX
Vehicle: 2001 Ford F150
Posts: 63
You may be dealing with an intermittent engine misfire. In overdrive at low engine rpms the engine is really lugging, and that's when an engine misfire tends to show up.
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  #3  
Old 08-04-2005, 08:01 PM
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Join Date: Feb 2005
Posts: 9
My truck just started doing the exact same thing you are describing. Let me know if you find out anything and I will likewise. Thanks
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  #4  
Old 08-04-2005, 10:46 PM
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Join Date: Nov 2004
Location: minnesota
Vehicle: 2000 ford F-150
Posts: 526
just out of curiousity did u disconnect the batery at all? if it earased everything it has to learn the codes and the shifting will seem harsh for the fist couple hundred miles. i kno i have a superchips tuner and whenever i go from performance to towing modes it takes a while for the tranny to hit the right spots it seems
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  #5  
Old 08-08-2005, 12:22 AM
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Join Date: Feb 2005
Posts: 9
Replaced my plugs today. Problem Fixed!!!
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  #6  
Old 08-12-2005, 11:00 PM
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Join Date: Aug 2005
Location: North Carolina
Vehicle: 2001 Ford F150
Posts: 3
jdoc -thanks for the tip, I'll try it
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  #7  
Old 08-15-2005, 11:59 AM
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Join Date: Apr 2005
Location: Canton, Ohio
Vehicle: 2005 Ford F150 FX4
Posts: 547
Quote:
Originally Posted by Drdexron
You may be dealing with an intermittent engine misfire. In overdrive at low engine rpms the engine is really lugging, and that's when an engine misfire tends to show up.
that was the case with my '98

plugs/wires/pcv valve/fuel filter -fixed everything
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