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  #1  
Old 03-10-2010, 12:34 PM
Am3rican_Rang3r Am3rican_Rang3r is offline
Minitrucker
 
Join Date: Mar 2010
Posts: 1
Default Irregular shifting and slight lack of power along with a rattle

At low speeds of 15-25mph, hard shifting occurs, at speeds above 45-50mph, the odometer drops from 3,000 rpms-2,000 rpms and the truck slows down, but if i press on the gas any, the rpms do not move and all i hear is the engine working harder but no reaction to the road, also when this happens, a rattle occurs. If i let off the gas and press again, the truck reacts with acceleration but does the same thing again.
What is wrong with my truck guys?? I took it to autozone and got it checked by the computer and no codes were shown but there is clearly something wrong.
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  #2  
Old 03-10-2010, 12:57 PM
dos0711 dos0711 is offline
Flareside Ranger Driver
 
Join Date: Feb 2010
Posts: 196
Default Re: Irregular shifting and slight lack of power along with a rattle

Almost sounds like your catalytic converter(s) is clogged or getting clogged.
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  #3  
Old 03-10-2010, 01:17 PM
SPless SPless is offline
Ford Tough
 
Join Date: Jan 2010
Posts: 412
Default Re: Irregular shifting and slight lack of power along with a rattle

alright, crawl under your truck and find your catalytic converters. Bawl your fist up and hit them, and see if they rattle. The problem you describe sounds like the catalytic converters are breaking up inside, and the loss of power would be described by the pieces blowing back into the pipe and clogging the pipe.
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Old 03-10-2010, 02:33 PM
Built Ford Tough Built Ford Tough is offline
Ford Motor Company
 
Join Date: Mar 2010
Posts: 126
Default Re: Irregular shifting and slight lack of power along with a rattle

Sounds like what happened to me when I swapped my spark plug wires lol!
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  #5  
Old 03-12-2010, 04:11 PM
KF5EQV KF5EQV is offline
A guy with a truck.
 
Join Date: Feb 2010
Posts: 166
Default Re: Irregular shifting and slight lack of power along with a rattle

Thats so weird, I was just getting on here to ask about the SAME thing on my '01. All except the noise, which I haven't noticed. Other than that it sounds identical.

I guess I'll check the catalytic converters and keep an eye on this thread.
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  #6  
Old 03-13-2010, 02:43 AM
Coleosis Coleosis is offline
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Join Date: Jun 2009
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Default Re: Irregular shifting and slight lack of power along with a rattle

Could be the torque converter too...but the cat. converter would be cheaper and easier to check.
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