Loping at Idle, Romping.
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Loping at Idle, Romping.
After taking my truck to a dealer for PCM reprogramming (TSB), my truck started acting Up. On start ups. Reprogramming has hopefully solved few other problems and tranny shift better now.
But it started lopind or Romping a few time on start, when the engine is wormed up. Does not do it every time but maybe 7 out of 10.
Ok I have read several treads and suggestions for changing Transmission Range selector switch.
I borrowed range selector from my other PSD and it did not solve the problem.
What else could it be.?
But it started lopind or Romping a few time on start, when the engine is wormed up. Does not do it every time but maybe 7 out of 10.
Ok I have read several treads and suggestions for changing Transmission Range selector switch.
I borrowed range selector from my other PSD and it did not solve the problem.
What else could it be.?
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Truck does not lop when it is cold. When started cold it is fine, when it is warmed up then it does it on a start up for about 3-7 seconds.
This, Romping when hot, started 10 minutes after the dealer reprogrammed trucks PCM. I called them back and they said drive it for a while it should relearn new strategy. Well has been 100 miles by now.
This, Romping when hot, started 10 minutes after the dealer reprogrammed trucks PCM. I called them back and they said drive it for a while it should relearn new strategy. Well has been 100 miles by now.
Last edited by dinikin; Oct 6, 2007 at 08:43 AM.
Hotshot
Joined: Aug 2006
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Originally Posted by dinikin
Truck does not lop when it is cold. When started cold it is fine, when it is warmed up then it does it on a start up for about 3-7 seconds.
This, Romping when hot, started 10 minutes after the dealer reprogrammed trucks PCM. I called them back and they said drive it for a while it should relearn new strategy. Well has been 100 miles by now.
This, Romping when hot, started 10 minutes after the dealer reprogrammed trucks PCM. I called them back and they said drive it for a while it should relearn new strategy. Well has been 100 miles by now.
It would be best to run it on a scanner to watch ICP & IPR dc% ,if you can.....
Post Fiend
Joined: Oct 2003
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From: MICHIGAN
I gotta tell you, your experience with re-progamming is not new. It seems that everytime I hear someone that had it done had nothing but complaints. Ford reflashes the PCM without thinking IMO. They just throw everything the TSB's say it SUPPOSED to need and call it good to go. There's no way to go back either, that I know of.
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Post Fiend
Joined: Apr 2004
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From: Silver Lake Dunes, MI
PSD don't learn form what I have heard. They don't have adaptive stratagies just the tranny does. So tell your dealer to their full of it. I will let you know what fixes my lope when I get it figured out!
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I needed reprogramming to eliminate the CACKLE. It was just like 99 UP PSDs.
This is due to my truck being Cali. emiss. and having split shot enjectors.
They might have solve on problem and create another.
TJBeggs, I would say to them they full of sht. but I need some back up, do you know
any Ford docs. that provide that info.
This is due to my truck being Cali. emiss. and having split shot enjectors.
They might have solve on problem and create another.
TJBeggs, I would say to them they full of sht. but I need some back up, do you know
any Ford docs. that provide that info.
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
ok you have a cali truck with split shots. I will be willing to bet that they reflashed your truck with single shot programming. I would double check with them on that. I am running split shot AD's on single shot programming and I have a lope idle. Its worth a shot.
And no I don't have any info on hand about that. I read posted material a few years ago from a ford tech about the PSD not learning anything. Seems like it was in an owners manual but not sure.
And no I don't have any info on hand about that. I read posted material a few years ago from a ford tech about the PSD not learning anything. Seems like it was in an owners manual but not sure.
Hotshot
Joined: Oct 2003
Posts: 17,799
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From: Ashland City, TN
Yea, its not A good idea to have a 16 year old driving a Semi...
I doubt the computer learns to much. If it learns at all. I would think that the PSD learns some, otherwise you could get enormous power gains and just kill the motor.
Throw fuel and air in, and if the computer isn't calculating anything in the setup, then that might be bad.
The computer probably learns to keep track for fuel, and air, that is IT.
I doubt the computer learns to much. If it learns at all. I would think that the PSD learns some, otherwise you could get enormous power gains and just kill the motor.
Throw fuel and air in, and if the computer isn't calculating anything in the setup, then that might be bad.
The computer probably learns to keep track for fuel, and air, that is IT.
Lead Driver
Joined: May 2007
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From: Belair md
tim, they cant reflash the wrong program at ford, the wds uses VIN recogniztion to determin all diag and programming, when they hooked it up it will show the cali emissions truck and self choose the latest update available for the truck
Post Fiend
Joined: Apr 2004
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From: Silver Lake Dunes, MI
Originally Posted by c00nhunterjoe
tim, they cant reflash the wrong program at ford, the wds uses VIN recogniztion to determin all diag and programming, when they hooked it up it will show the cali emissions truck and self choose the latest update available for the truck
Hotshot
Joined: Oct 2003
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From: Ashland City, TN
The problem with reporgraming is your putting Factory settings on a broke in non factory truck.
After you drive it so long its pretty much not a factory setup anymore.
The old injectors wont fire the same as new ones and so on.
That would be my thought.
But that also goes against the computer learning the truck.
After you drive it so long its pretty much not a factory setup anymore.
The old injectors wont fire the same as new ones and so on.
That would be my thought.
But that also goes against the computer learning the truck.