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Truck shakes between 35-45mph

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  #16  
Old 02-06-2014, 02:48 PM
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Quote:
Originally Posted by mpjosh2001 View Post
U joints are all new. I've checked and rechecked my pug wires and the tranny guy said it wasn't TC shudder. I have an AOD TRANS if this helps. Thanks for the replys guys. I'm still open to more ideas.
Now people can see it.
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  #17  
Old 02-06-2014, 02:55 PM
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Now people can see it.
Both rla2005 and myself were asking jbird1127 which transmission he/she has. The post you quoted from mpjosh2001 is nearly 3 years old.
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  #18  
Old 02-06-2014, 10:22 PM
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Ah.

I stand an idiot.
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  #19  
Old 02-07-2014, 01:05 PM
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I am struggling with sorting this as EGR problem or TC problem. The shop threw in some anti-slip but no change. For me, it's when rolling into the throttle at highway cruising speeds. I've taken mine apart and cleaned it thoroughly so next I am going to try a vacuum test on my system to see if I have a leak. I'll also try this test to see if it's TC or engine, really hard to tell.
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Old 02-07-2014, 06:00 PM
89danford 89danford is offline
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Happened to me once when my battery terminal was loose... idk why but after i tightened them it stoped
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  #21  
Old 02-07-2014, 06:09 PM
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If you have a misfire in one or more cylinders it will do this, also. A weak spark in a low RPM/rich-mid to heavy throttle condition will not fire properly. A plug can have a blazing blue spark out in the open air but put in under compression and it will fail. Coils, wires, and PIPs too. A cracked plug will do this. A cracked cap will do this.

I'm not saying the parts already replaced are bad, but who knows?
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  #22  
Old 05-21-2016, 12:36 AM
Steven Kennedy Steven Kennedy is offline
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Originally Posted by mpjosh2001 View Post
My truck gets a bad vibration between 35 and 45 mph until I stomp on the accelerator and get it to kick down in gear. Any ideas on what it could be and how to fix it? I've been told it's a misfire, but wouldn't I notice it at idle too?
Could be a fuel pressure prob
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1997, 35, 45, 45mph, 79, converter, e4od, edge, expedition, f150, ford, misfires, mph, shakes, shaking, torque, truck, vibrates

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