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  #181  
Old 08-09-2014, 10:54 AM
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Thanks very much for this thread. I have had a consistent highway shudder/clunk in that 80kmph range in the last year or so. Thought maybe the ujoints or ubolts for leaf springs were loose and causing issues. Then I read this thread. Replaced the plug wires on my 4.2 v6 with 335k km and the problem is gone. Thanks again.
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  #182  
Old 08-09-2014, 01:02 PM
Bluegrass 7 Bluegrass 7 is offline
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66,311 hits on this thread's subject.
It is a very common issue not well understood even by most shops.
Good luck.
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  #183  
Old 08-10-2014, 10:48 PM
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Originally Posted by Bluegrass 7 View Post
It is a very common issue not well understood even by most shops.
I wish I knew it was such an easy fix. I knew that I needed to do a tune up anyway, but if I would have known that 3 coils were weak I would have done that after the first time the shuddering started instead of thinking that my transmission is going out. live and learn I guess.
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2002 F-150 Lariat Supercrew FX4, 5.4L 2v, 3.55 LS, BFG All-Terrains, MagnaFlow muffler with duals, all LED lights, Pioneer headunit, Kicker sub and amp

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  #184  
Old 08-12-2014, 12:53 PM
F150Dad F150Dad is offline
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Originally Posted by Dr. Dirt View Post
I wish I knew it was such an easy fix. I knew that I needed to do a tune up anyway, but if I would have known that 3 coils were weak I would have done that after the first time the shuddering started instead of thinking that my transmission is going out. live and learn I guess.
Don't feel bad Kevin, I was in the same boat. Luckily I had a couple of ex-Ford techs working on my truck, and they suggested because of the trucks age and unknown maintenance, to just replace all the COP's. I know NOW since reading more about how Bluegrass explained everything, what was going on. I most likely did NOT need a full set, but purchased them anyway. This is my sons truck, and like his two sisters before him, in my house you only get ONE mom and dad purchased car. The next one is on YOUR dime, so when I have purchased kids vehicles, they go through a complete tune up, fluid change, a/c charging to hopefully make sure they last 3 to 5 years after high school. The next set of COP's, if needed, will be on his dime.........

P.S. I want to personally thank Bluegrass 7 for his input. If you understand the workings of an engine, his breakdowns are spot on with what is happening to cause the situation. Thanks!!!!
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  #185  
Old 08-12-2014, 02:58 PM
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Quote:
Originally Posted by F150Dad View Post
Don't feel bad Kevin, I was in the same boat. Luckily I had a couple of ex-Ford techs working on my truck, and they suggested because of the trucks age and unknown maintenance, to just replace all the COP's. I know NOW since reading more about how Bluegrass explained everything, what was going on. I most likely did NOT need a full set, but purchased them anyway. This is my sons truck, and like his two sisters before him, in my house you only get ONE mom and dad purchased car. The next one is on YOUR dime, so when I have purchased kids vehicles, they go through a complete tune up, fluid change, a/c charging to hopefully make sure they last 3 to 5 years after high school. The next set of COP's, if needed, will be on his dime....
yeah, you were lucky that you had ford techs, but it is pretty sorry that they made you replace all of the coils instead of just the ones that it really needed.

my parents only bought me ONE vehicle to drive, now I have to pay for all the gas/repairs by myself.
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  #186  
Old 09-23-2014, 11:44 PM
pickleball73 pickleball73 is offline
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A little update on my V10 motor home I bought the MH and drove it 150 miles back home, Bucking and Jumping and Studdering all the time. Over the course of the next couple of weeks I took two short trips to get other maint. Both trips were about 25 miles and a week apart. Still lotsa BJ&S.
Made appt with repair shop and drove 50 miles last week. Started to BJ&S right away, but as soon as I got a couple of miles down the road it SMOOTHED OUT AND RAN PERFECTLY for the rest of the trip.
The tech drove it and COULD NOT TO GET IT TO BJ&S any more…
He looked at it with the scanner for about half hour and determined that COP 2 & 9 were bad.
I opted for a regular oil change service along with fuel filter, spark plugs, and a B&G engine cleaning system.
Drove it back home yesterday and everything is OK and I’m out $1400 bux.
Thanks again to Bluegrass and others who opined here. Feels like home already…/gene
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  #187  
Old 09-24-2014, 06:38 PM
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Quote:
Originally Posted by pickleball73 View Post
A little update on my V10 motor home I bought the MH and drove it 150 miles back home, Bucking and Jumping and Studdering all the time. Over the course of the next couple of weeks I took two short trips to get other maint. Both trips were about 25 miles and a week apart. Still lotsa BJ&S.
Made appt with repair shop and drove 50 miles last week. Started to BJ&S right away, but as soon as I got a couple of miles down the road it SMOOTHED OUT AND RAN PERFECTLY for the rest of the trip.
The tech drove it and COULD NOT TO GET IT TO BJ&S any more…
He looked at it with the scanner for about half hour and determined that COP 2 & 9 were bad.
I opted for a regular oil change service along with fuel filter, spark plugs, and a B&G engine cleaning system.
Drove it back home yesterday and everything is OK and I’m out $1400 bux.
Thanks again to Bluegrass and others who opined here. Feels like home already…/gene
awesome! hope all goes well
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"You got to drive that Ford like it's a stallion."-Jack Ingram
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  #188  
Old 10-27-2014, 05:48 PM
jhunter564 jhunter564 is offline
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Originally Posted by Shane Cummings View Post
Hello all. Here's a little information about my truck. It's a 2000 F-150. Two wheel drive. 5.2 Liter V8. About 133,000 miles on it currently.

Here is the problem I have been having with it recently. Right around 45-50 mph, my truck starts to jerk or studder as I attempt to accelerate gently. It has not been too bad, but it has been prevalent for the past few months. Yesterday, after an 8 hour drive on highways, when I got back onto a regular road, the truck would jerk/studder around 45 mph and it was so bad that I could not drive past 45 mph.

It does not always happen when I drive, but now it is occurring more frequently. I want to bring it into the shop, but want to hear what you guys have to say about this problem first. Thanks!

Same problem for me. I took it to the dealership and they said it was the torque converter which they changed out. Firtunately I had the ext warranty or it would have cost $1,700. It fixed it for a year or so but now I am noticing a slight return of the shudder..

We'll see how visit #2 goes..
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  #189  
Old 10-27-2014, 08:07 PM
Bluegrass 7 Bluegrass 7 is offline
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Your studder is very easy to find.
It's a faulty coil.
Ask them to use a Scanner and look at the misfire monitors for each cylinder.
It's found in mode 6, test 53.
Step through to each cylinder and look at the counts.
The one with the high counts has a faulty coil.
It was never a converter issue.
Good luck.
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  #190  
Old Yesterday, 07:02 PM
snowbird qc snowbird qc is offline
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Big thank's to Bluegrass7 and other posters, my 2004 freestar 4.2l was doing exactly that and when you search the interweb you only find horror stories about transmission problems,

what is described as jerking/studdering is exctly what's happening to my freestar and what is explained to solve it is such a releif, i was ready to give up on that van, trans is worth as much as the van...thank-you

I will make check on coil packs tomorrow and let you know the results
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Old Yesterday, 07:02 PM
 
 
 
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