Truck jerks in overdrive
11-09-2016, 10:48 AM
#11
Mark
iTrader: (1)
Don't start replacing stuff that's not proven broke... unless you have money to waste. Coils are most likely good.. change the plugs .. boots and springs and go from there.
The following 2 users liked this post by techrep:
F150Torqued (11-19-2016),
msantello (11-19-2016)
11-09-2016, 01:11 PM
#12
Senior Member
What you need is someone that can scan live data.
A miss needs to happen a given number of times during a given cycle. If that is not happening you can still have symptoms without a CEL or codes.
Any mechanic worth his salt has a scan tool that can do this. This is the place where spending a little money for diagnosis may very well save you a lot in unneeded parts.
This is certainly the kind of problem where lots of people will tell you a lot of different possibilities. You may get lucky and hit the right cause with the first part or you may be hundreds of dollars in before you find the true problem.
FWIW I just purchased another F150 at a bargain which, among a few issues, is having the exact same problem. It will be a few weeks before I dig into that issue. MY first stop will be at a mechanic friend with an updated scan tool that will read live data. It will tell me immediately if a miss is happening during that jerking motion.
I have concerns that it could be related to shifting in and out of OD but this truck has a newer trans in it which is part of the reason I took the chance on the purchase.
A miss needs to happen a given number of times during a given cycle. If that is not happening you can still have symptoms without a CEL or codes.
Any mechanic worth his salt has a scan tool that can do this. This is the place where spending a little money for diagnosis may very well save you a lot in unneeded parts.
This is certainly the kind of problem where lots of people will tell you a lot of different possibilities. You may get lucky and hit the right cause with the first part or you may be hundreds of dollars in before you find the true problem.
FWIW I just purchased another F150 at a bargain which, among a few issues, is having the exact same problem. It will be a few weeks before I dig into that issue. MY first stop will be at a mechanic friend with an updated scan tool that will read live data. It will tell me immediately if a miss is happening during that jerking motion.
I have concerns that it could be related to shifting in and out of OD but this truck has a newer trans in it which is part of the reason I took the chance on the purchase.
The following users liked this post:
F150Torqued (11-19-2016)
11-09-2016, 03:18 PM
#13
Junior Member
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What you need is someone that can scan live data.
A miss needs to happen a given number of times during a given cycle. If that is not happening you can still have symptoms without a CEL or codes.
Any mechanic worth his salt has a scan tool that can do this. This is the place where spending a little money for diagnosis may very well save you a lot in unneeded parts.
This is certainly the kind of problem where lots of people will tell you a lot of different possibilities. You may get lucky and hit the right cause with the first part or you may be hundreds of dollars in before you find the true problem.
FWIW I just purchased another F150 at a bargain which, among a few issues, is having the exact same problem. It will be a few weeks before I dig into that issue. MY first stop will be at a mechanic friend with an updated scan tool that will read live data. It will tell me immediately if a miss is happening during that jerking motion.
I have concerns that it could be related to shifting in and out of OD but this truck has a newer trans in it which is part of the reason I took the chance on the purchase.
A miss needs to happen a given number of times during a given cycle. If that is not happening you can still have symptoms without a CEL or codes.
Any mechanic worth his salt has a scan tool that can do this. This is the place where spending a little money for diagnosis may very well save you a lot in unneeded parts.
This is certainly the kind of problem where lots of people will tell you a lot of different possibilities. You may get lucky and hit the right cause with the first part or you may be hundreds of dollars in before you find the true problem.
FWIW I just purchased another F150 at a bargain which, among a few issues, is having the exact same problem. It will be a few weeks before I dig into that issue. MY first stop will be at a mechanic friend with an updated scan tool that will read live data. It will tell me immediately if a miss is happening during that jerking motion.
I have concerns that it could be related to shifting in and out of OD but this truck has a newer trans in it which is part of the reason I took the chance on the purchase.
11-09-2016, 03:35 PM
#14
Senior Member
Oh ok I gotcha, I'll check it out. As far as the foam your taking baout can that cause an issue because mine is almost gone? Also does anybody know what the price is to have your plugs and coils changed. I'm scared I have the originals and that they're going to all break off if I do it myself and that's a headache I don't need right now. Thanks
11-09-2016, 04:54 PM
#15
Senior Member
Oh ok I gotcha, I'll check it out. As far as the foam your taking baout can that cause an issue because mine is almost gone? Also does anybody know what the price is to have your plugs and coils changed. I'm scared I have the originals and that they're going to all break off if I do it myself and that's a headache I don't need right now. Thanks
11-10-2016, 07:05 PM
#18
My 2005 F150 Lariat has the same issues as provided by other members. Truck has 130,000 miles, Fuel Filter a couple years old, plugs are 1 year old, coil packs are originals. Checked the transmission fluid and found out is was 1/2 quart to full, I was thinking that was the problem. Had the trucked checked for codes and I have a Edge 2004-2008 F-150 EVO PROGRAMMER. No codes are pulling up so I do not know where to start checking what is causing the mis. How do you all identify a bad coil pack? Mike
11-10-2016, 08:00 PM
#19
Senior Member
My 2005 F150 Lariat has the same issues as provided by other members. Truck has 130,000 miles, Fuel Filter a couple years old, plugs are 1 year old, coil packs are originals. Checked the transmission fluid and found out is was 1/2 quart to full, I was thinking that was the problem. Had the trucked checked for codes and I have a Edge 2004-2008 F-150 EVO PROGRAMMER. No codes are pulling up so I do not know where to start checking what is causing the mis. How do you all identify a bad coil pack? Mike
First, what kind of plugs did you put in? Non stock plugs have been notorious for giving problems.
Second, coils, you need a scan tool with live data to determine where them miss is happening.
I see many people noting on here that they just changed plugs and the issue went away. To them and anyone reading this thread, that is not a good idea. If you in fact have a weak coil, you may not have enough symptoms to tell but it will take out the plug. so by changing just plugs you have simply treated the symptom and not the problem, which was actually a coil.
You need to do your full diagnosis and determine the problem and not get caught up in the symptoms. This is not to say that a plug cannot be the issue. That can certainly be the problem in and of itself. However, unless you determine that for certain, you may end up doing the plugs or at least plug again in a relatively short period of time.
Back to your questions, once you determine the correct cylinder, you can swap that coil to another cylinder position and see if the miss follows. This is after you check the plug. If the plug has gone bad it may again mask the issue.
The following users liked this post:
msantello (11-10-2016)
11-19-2016, 07:10 AM
#20
I took the truck over to a mechanic and he hooked up his computer to see what codes were being created. I was surprised to see not one code was shown after the 15 minute test. The mechanic recommended I went to my parts store and purchase shutter lube ( additive for the transmission ) and see if the would correct the problem. We drove the truck lastnight and it's still shuttering between 40-45 mph but not as bad before I put in the shutter additive. 1 thing we did notice is when we use 92 or 93 Octane gas, we don't experience any shutter, could be a wild chance it's a injector, but I am scratching my head because there are no codes.
A couple of things here.
First, what kind of plugs did you put in? Non stock plugs have been notorious for giving problems.
Second, coils, you need a scan tool with live data to determine where them miss is happening.
I see many people noting on here that they just changed plugs and the issue went away. To them and anyone reading this thread, that is not a good idea. If you in fact have a weak coil, you may not have enough symptoms to tell but it will take out the plug. so by changing just plugs you have simply treated the symptom and not the problem, which was actually a coil.
You need to do your full diagnosis and determine the problem and not get caught up in the symptoms. This is not to say that a plug cannot be the issue. That can certainly be the problem in and of itself. However, unless you determine that for certain, you may end up doing the plugs or at least plug again in a relatively short period of time.
Back to your questions, once you determine the correct cylinder, you can swap that coil to another cylinder position and see if the miss follows. This is after you check the plug. If the plug has gone bad it may again mask the issue.
First, what kind of plugs did you put in? Non stock plugs have been notorious for giving problems.
Second, coils, you need a scan tool with live data to determine where them miss is happening.
I see many people noting on here that they just changed plugs and the issue went away. To them and anyone reading this thread, that is not a good idea. If you in fact have a weak coil, you may not have enough symptoms to tell but it will take out the plug. so by changing just plugs you have simply treated the symptom and not the problem, which was actually a coil.
You need to do your full diagnosis and determine the problem and not get caught up in the symptoms. This is not to say that a plug cannot be the issue. That can certainly be the problem in and of itself. However, unless you determine that for certain, you may end up doing the plugs or at least plug again in a relatively short period of time.
Back to your questions, once you determine the correct cylinder, you can swap that coil to another cylinder position and see if the miss follows. This is after you check the plug. If the plug has gone bad it may again mask the issue.