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Bucking under accelaration

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Old Aug 15, 2010 | 03:41 AM
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Bucking under accelaration
Hi i am new to this forum i have a important questio everytime i speed up in my 1998 4x4 expedition ed it starts to buck when i am accelarating to get on the freeway any help appericated.
 
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Old Aug 15, 2010 | 12:00 PM
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Most likely it's bad COP giving you a misfire.
 
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Old Aug 15, 2010 | 02:32 PM
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What is a COP
 
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Old Aug 15, 2010 | 05:44 PM
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COP=Coil Over Plug
 
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Old Aug 15, 2010 | 06:21 PM
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Originally Posted by fixit5561
COP=Coil Over Plug
Oh man...I was going to tell him it's a guy in a blue uniform.
 
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Old Aug 15, 2010 | 07:06 PM
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I was tempted!LOL
 
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Old Aug 16, 2010 | 06:27 AM
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Have it scanned so there's no guessing; free at autozone. Make sure you note the code.
 
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Old Sep 20, 2010 | 02:21 AM
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I got the codes ran their are no codes at all.
 
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Old Sep 20, 2010 | 08:46 AM
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Originally Posted by cleaningbug94
I got the codes ran their are no codes at all.
All the more reason to think it's one of the COPs. It's a real bear to get a misfire code to set when a COP is acting up. Some people have been able to get the light to set by driving the truck harder than normal, such as jackrabbit starts and rapid acceleration.
 
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Old Sep 20, 2010 | 09:06 AM
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Originally Posted by Methodical_1
Have it scanned so there's no guessing; free at autozone. Make sure you note the code.
Mine NEVER showed a code...

And I have my own tester, and can ride down the road monitoring... So it is not like I just went in once to test...

COPS fixed it!
 
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Old Sep 20, 2010 | 02:41 PM
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i am going to be driving across country with a 6x12 foot trailer should i replace them before that my dad died and i do not have any money at all we are asking my aunt to loan us money just to make it across or is it something that could cause a break down.
 
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Old Sep 20, 2010 | 03:25 PM
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Originally Posted by cleaningbug94
i am going to be driving across country with a 6x12 foot trailer should i replace them before that my dad died and i do not have any money at all we are asking my aunt to loan us money just to make it across or is it something that could cause a break down.
They're $70 a piece at an auto store or $10 a piece if you order them off eBay. Being as how funds are tight, it doesn't seem feasible to be buying them locally and replace them all. I don't know how long to have until you're leaving, but if time allows, I'd order the ones online to save the money. You could buy just 2 instead of a whole set and swap out two at a time until you find the problematic COPs.

Sorry about your Dad.
Where 'across country' are you heading to?
 
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Old Sep 20, 2010 | 03:53 PM
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Thank you i am moving from arizona to michigan
 
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Old Sep 20, 2010 | 09:44 PM
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Originally Posted by cleaningbug94
moving from Arizona to Michigan
Quite the climate change, especially with winter coming up.
 
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Old Sep 20, 2010 | 09:45 PM
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You can ruin your catalytic converters....$$$....
 
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