General Driving Question
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General Driving Question
Hey everyone. I have a 2010 F250 SRW with 4,500 miles. I have noticed just within the last 200 miles or so that every once in a while and mind you it is not at all consisten or occuring regularly that when I am accellerating at a reasonable rate, at about 45 mph it shifts into overdrive. After about 45mph and right up to about 55mph if I push the pedal down to get going at a little quicker pace but not enough to cause a shift up, sometimes the truck "jerks" or "stutters" a little...just as if it were a gas vehicle and had bad plugs/wires etc.
At no time is their any color or type of smoke at all. And not all the time does this happen either. It may occur on the way to work and then not for another 3 or 4 days.
So I was just looking for some input to see what kind of input everyone has.
Thanks
RC
At no time is their any color or type of smoke at all. And not all the time does this happen either. It may occur on the way to work and then not for another 3 or 4 days.
So I was just looking for some input to see what kind of input everyone has.
Thanks
RC
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I know mine (2008 F250 ) shifts into 5th if I let off the pedal enough around 45mph and it will only maintain speed I can't get it to accelerate much. If I punch it like you say it shifts back down and around 50-55 hits 5th.
I wish they would set overdrive to 52mph on up. Because I hate driving on some local roads at 45-48mph and the thing keeps shifting as I hit inclines and downhills etc.
Ben
I wish they would set overdrive to 52mph on up. Because I hate driving on some local roads at 45-48mph and the thing keeps shifting as I hit inclines and downhills etc.
Ben
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I would further go on to indicate that this bucking/jerking/stalling feels as if you are running on a really crappy pot-hole roads that have had bad patch jobs.
Just to confirm that was not it, I took off and found some new pavement one day when it was happening to make srue that it was not roadway itself.
And I also just thought of this.....several years ago I had this similar thing happen on my 7.3L. That turned out to be an injector clogged up at 145,000 miles.....but at 4,500 I kinda rule this one out.
Just to confirm that was not it, I took off and found some new pavement one day when it was happening to make srue that it was not roadway itself.
And I also just thought of this.....several years ago I had this similar thing happen on my 7.3L. That turned out to be an injector clogged up at 145,000 miles.....but at 4,500 I kinda rule this one out.
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From: Long Island, NY
I am just gonna throw this one out there... It sounds almost like what happens when you lug a motor. When you are in too tall of a gear at too low of an RPM and the motor lugs. Now I know this happens with standard cars... I am not sure it can happen with a automatic let alone a diesel. Perhaps the tranny programming is off a bit. I would think if you get it on some open road, and really get on it. Let it run through the gears at a good rate of speed. See if you have the same problems. Anyone think this might be it??
Mountain Pass
Joined: Nov 2009
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08 F350 6.4. I told my dealer my truck acted like that when I pulled my fifth wheel. I can't make it do it- it's a real intermittent problem. They say everything is O.K. Was supposed to get a computer to hang on it when I did a 1200 mile trip, but then they told me the computer wasn't available. This only ever does it when my trailer is hooked to the back, and only when I first pull out.And yes, it's always in tow/haul cause the 5er weighs 15000 pounds.
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From: Frederick, MD
really this to me sounds like a bit of water in the cac that you are cleaning out as you are going down the road. Not enough to cause the white smoke or anything.
Other cause could be the fuel filters?
Just guesses at this point.
I too think I would get it out and either pull something or get some good rpms on it and work it.
Then see what happens.
Other cause could be the fuel filters?
Just guesses at this point.
I too think I would get it out and either pull something or get some good rpms on it and work it.
Then see what happens.
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I had a 100 mile interstate trip yesterday and then when i exited the interstate I was just barely able to detect that it was happening after getting started from the interstate exit ramp.
It has set over night and I have another interstate trip today so I will she what happens.
Probably a good idea now to ask what the definition is of a "CAC" and how does water get in that part? Thank you!
It has set over night and I have another interstate trip today so I will she what happens.
Probably a good idea now to ask what the definition is of a "CAC" and how does water get in that part? Thank you!
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From: Frederick, MD
CAC= Charge air cooler. Otherswise known as an intercooler.
You could try to take the lower hose off the cac and see if there is water there. It would just drain out onto the ground.
Let us know the results of the next drive.
You could try to take the lower hose off the cac and see if there is water there. It would just drain out onto the ground.
Let us know the results of the next drive.
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Thanks for the info....I appreciate that.
As to the update from today's drive.
This morning left the house and drove about 45 minutes to the airport. Didnot notice anything. Hit the interstate ran about an hour and a half and pulled off to the exit I needed and the issue was barely noticable at all.
On the way home, was barely noticable at all going to the interstate, drove back home the same route and same lengths and it was just hardly noticable at all. Mostly noticeable now at the 50mph mark instead of the 45 and always cleared up by the 55mph mark.
So what does that now lead you all to think? And I think it it worth noting that under normal circumstances I never run the truck hard like really hauling anus to take off from a stop light or something for example. I usually do the slow even steady take off. Today I did a few times really "punch it" and "get 'er going" so to speak.
Maybe this problem is my fault by the way I drive.
Thanks for everything,
RC
As to the update from today's drive.
This morning left the house and drove about 45 minutes to the airport. Didnot notice anything. Hit the interstate ran about an hour and a half and pulled off to the exit I needed and the issue was barely noticable at all.
On the way home, was barely noticable at all going to the interstate, drove back home the same route and same lengths and it was just hardly noticable at all. Mostly noticeable now at the 50mph mark instead of the 45 and always cleared up by the 55mph mark.
So what does that now lead you all to think? And I think it it worth noting that under normal circumstances I never run the truck hard like really hauling anus to take off from a stop light or something for example. I usually do the slow even steady take off. Today I did a few times really "punch it" and "get 'er going" so to speak.
Maybe this problem is my fault by the way I drive.
Thanks for everything,
RC
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From: waynesville, mo.
The lockup in the converter usually "hits" around 40-50 mph depending upon load and throttle request. It will make a difference whether its warm or not as well. My opinion....nothing to worry about.
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TC locks at 42 to 43 on my unit...I do not beleive it matters about temps either. This afternoon after sitting for the day it was still noticable as soon as I started home before the unit had a chance to warn up yet.
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From: Georgia
I'm kinda confused about your symptons but what senix said sounds possible, your 1st discription sounded just like what my truck did before the charge air cooler (thats the front most radiator looking thing) was changed. I don't know where you live but if it's in dixie land the thing goes like this. As you drive along and the truck warms up humidity forms inside the cooler and becomes a puddle of water. Then when you attempt a hard acceleration the turbo sucks that water from the bottom of the cooler up into the cylinders which tends to put the fire out for a nano second. There is a TSB about it but the TSB talks about white smoke which you did not mention. FWIW replacing the cooler improved mine but did not totally cure it. I was crossing the everglades and the problem returned as I tried the get into traffic from a rest area and I was able to repeat it on the way back by just kicking it in the butt. Now, once the standing water has been sucked out the motor will resume normal operation. One easy way to check is what sennix said, drive to warm and then remove one end of the bottom cooler hose and see if any water comes out. Hope this is helpful.
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I drive along the Ohio River in Ohio and West Virginia.
You make a note about when on a hard acceleration....mine occurs after the final shift into OD and the RPM's drop to close to 1200 or so and at 45mph and you give it enough pedal to accelerate without causing a shift up...
To cover the white smoke item...I read another link about that late last night and make it a point to watch for it today and NONE was noticed during any of the occurences.
Fortunately I guess in my case is that when I really get on it, VROOM VROOM away I go so I don't get run over leaving a rest area for example.
I shall attempt to check for the water the first of the week as the weather is supposed to bring us from 40's and 50's from 10's and 20's.
And just for kicks, I should mention that I have the offical FORD bra on my unit..that was missing from my signature. I have read about people getting snow in the intake and we sure had a fair amount this year plus I like to bra look for winter time.
Do you think that the bra could in some way have been partially to blame in some way to by changing the way air enters the grill?
Thanks for everything,
RC
You make a note about when on a hard acceleration....mine occurs after the final shift into OD and the RPM's drop to close to 1200 or so and at 45mph and you give it enough pedal to accelerate without causing a shift up...
To cover the white smoke item...I read another link about that late last night and make it a point to watch for it today and NONE was noticed during any of the occurences.
Fortunately I guess in my case is that when I really get on it, VROOM VROOM away I go so I don't get run over leaving a rest area for example.
I shall attempt to check for the water the first of the week as the weather is supposed to bring us from 40's and 50's from 10's and 20's.
And just for kicks, I should mention that I have the offical FORD bra on my unit..that was missing from my signature. I have read about people getting snow in the intake and we sure had a fair amount this year plus I like to bra look for winter time.
Do you think that the bra could in some way have been partially to blame in some way to by changing the way air enters the grill?
Thanks for everything,
RC
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Intercooler
Sure sounds like your intercooler. I have an 08 job1 had the same problems found a tsb number from on here somewhere, had Ford but on a new intercooler and have never had any more problems. Hope this helps.
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I am curious did you have the white smoke that some have talked about with your issue?
Do you happen to know the TSB numbers by any chance?
Thanks
RC
Do you happen to know the TSB numbers by any chance?
Thanks
RC