Transgo kit missing piece?
Fleet Mechanic
Joined: Sep 2006
Posts: 1,329
Likes: 0
From: IN
Yes from first to second is great and from second to third is great but third to fourth is a little lacking in the firm department.
Thread Starter
|
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
It may not be called that, but there is some provision for it to see what the line pressures etc are and make the appropriate shift strategy. I have read about it in my manual for when you disconnect the batteries. Jody mentioned it during my live tuning. Seems to make sense to me too. It looks at every shift, line pressures etc. The PCM looks at slipping, solenoids, etc. There has to be an IF-THEN algorythmn there. Does that make any sense?
Don't know how the wife's truck will turn out, but I can make MY 3-4 shift as soft or as firm as I want it.
You should have gotten an extra pedal and you wouldn't have to deal with all these issues.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Let me make sure I have this straight, we are talking about the shift into OD right? Just think about that for a moment. Myself, if I haven't smoked the other vehicle by then, OD ain't helping because wind resistance is really building by then. Just my experience, what are you guys seeing?
Fleet Mechanic
Joined: Sep 2006
Posts: 1,329
Likes: 0
From: IN
Let me make sure I have this straight, we are talking about the shift into OD right? Just think about that for a moment. Myself, if I haven't smoked the other vehicle by then, OD ain't helping because wind resistance is really building by then. Just my experience, what are you guys seeing?
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
I keep reading how the PCM won't "learn" shift strategies, but I also keep hearing about how the chip adjusts the line pressure for the shifts. So I do see your point. There has to be some kind of communication going on there to affect line pressure. The IF-THEN part makes sense, because I noticed it holding a gear longer under moderate acceleration instead of down shifting and trying to take off. (Life is easier in the country where you can stop and start in the middle of a road with a posted 55 mph speed limit and no other cars even visible)
NOTE: All gasoline vehicles will have new adaptive shift strategies. Whenever the vehicle's battery has been disconnected for any type of service or repair, the strategy parameters stored in the keep alive memory (KAM) will be lost. The strategy will start to relearn once the battery is reconnected and the vehicle is driven. This is a temporary condition and will return to normal operating condition once the powertrain control module (PCM) relearns all the parameters from the driving conditions. There is no set time frame for this process. If a concern is present during downshifts or converter clutch apply, it is not the fault of the shift strategy and will require diagnosis as outlined in the workshop manual.
Now it says all gasoline engines. We have a KAM in our trucks. Just what is being kept alive in that memory then? Why do we even need a KAM if the PCM is stupid? Jody told me it needs to learn. He knows more about this than me. I believe him until someone can tell me what our KAM is storing.
I am willing to bet it is mostly, if not all 4R100 data as these are digitally controlled trannies.
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
I drilled my calibration plate to the '6 cyl/low stall diesel' specs because the slightly 'tighter' aftermarket billet triple disc TC. The hole for the 2-3 shift was smaller that the others. I wish I had 'opened it up' to the same size. 3rd is not quite as firm as I'd like it to be. 3-OD has a quick, firm shift like 1-2. I do however have all the pump mods in there along with upgraded clutch packs from my rebuild. The TC lock up kit, I installed in the pump, makes its engagement feel like another firm shift.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Damn Roland, seems none of us can get it right. Actually, I have no complaints about how mine shifts. It shifts better than it has since I got the truck. Done. Well, until diode pukes.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Lead Driver
Joined: May 2007
Posts: 8,606
Likes: 13
From: Belair md
the softer 3-4 shift is probably due to the pcm's strategy with torque converter application during that shift. the e4od's use an on-off strategy during 3-4 while the 4r100 uses a pulsed strategy. both ways suck causing a softer shift.
how does the overall shifts compare to mine? i have never ridden in a transgo kit truck.
YouTube - 0-100+ mph
how does the overall shifts compare to mine? i have never ridden in a transgo kit truck.
YouTube - 0-100+ mph
Thread Starter
|
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
After doing a little reading down in the OBS forum, racer x did some testing on The Cure all the E4OD guys like. If I would have noticed this before, I would have spent my money there.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Dangit, I posted an update to this earlier and it is nowhere to be found. Let me dig it up.
Well, I was wrong kind of, from the manual:
NOTE: All gasoline vehicles will have new adaptive shift strategies. Whenever the vehicle's battery has been disconnected for any type of service or repair, the strategy parameters stored in the keep alive memory (KAM) will be lost. The strategy will start to relearn once the battery is reconnected and the vehicle is driven. This is a temporary condition and will return to normal operating condition once the powertrain control module (PCM) relearns all the parameters from the driving conditions. There is no set time frame for this process. If a concern is present during downshifts or converter clutch apply, it is not the fault of the shift strategy and will require diagnosis as outlined in the workshop manual.
Now it says all gasoline engines. We have a KAM in our trucks. Just what is being kept alive in that memory then? Why do we even need a KAM if the PCM is stupid? Jody told me it needs to learn. He knows more about this than me. I believe him until someone can tell me what our KAM is storing.
I am willing to bet it is mostly, if not all 4R100 data as these are digitally controlled trannies.
NOTE: All gasoline vehicles will have new adaptive shift strategies. Whenever the vehicle's battery has been disconnected for any type of service or repair, the strategy parameters stored in the keep alive memory (KAM) will be lost. The strategy will start to relearn once the battery is reconnected and the vehicle is driven. This is a temporary condition and will return to normal operating condition once the powertrain control module (PCM) relearns all the parameters from the driving conditions. There is no set time frame for this process. If a concern is present during downshifts or converter clutch apply, it is not the fault of the shift strategy and will require diagnosis as outlined in the workshop manual.
Now it says all gasoline engines. We have a KAM in our trucks. Just what is being kept alive in that memory then? Why do we even need a KAM if the PCM is stupid? Jody told me it needs to learn. He knows more about this than me. I believe him until someone can tell me what our KAM is storing.
I am willing to bet it is mostly, if not all 4R100 data as these are digitally controlled trannies.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Here we go. Take from this what you will. There seems to be some adaptive strategy going on here:
<title>Diesel Powertrain Control Software</title><link href="V1C%7Eus%7Een%7Efile=V1Cstyle.htm%7Egen%7Ere f.htm" type="text/css" rel="stylesheet">Powertrain Control Module
The center of the Electronic EC system is a microprocessor called the Powertrain Control Module (PCM). The PCM has a 104-pin electrical connector. The PCM receives input from sensors and other electronic components (switches, relays, etc.) and places this information in RAM or Keep Alive RAM. Based on information programmed into its memory (ROM), the PCM generates output signals to control various relays, solenoids and actuators.
Keep Alive Random Access Memory (RAM)
The PCM stores information in Keep Alive RAM (a memory integrated circuit chip) about vehicle operating conditions, and then uses this information to compensate for component variability. Keep Alive RAM remains powered when the vehicle key is off so that this information is not lost.
<title>Diesel Powertrain Control Software</title><link href="V1C%7Eus%7Een%7Efile=V1Cstyle.htm%7Egen%7Ere f.htm" type="text/css" rel="stylesheet">Powertrain Control Module
The center of the Electronic EC system is a microprocessor called the Powertrain Control Module (PCM). The PCM has a 104-pin electrical connector. The PCM receives input from sensors and other electronic components (switches, relays, etc.) and places this information in RAM or Keep Alive RAM. Based on information programmed into its memory (ROM), the PCM generates output signals to control various relays, solenoids and actuators.
Keep Alive Random Access Memory (RAM)
The PCM stores information in Keep Alive RAM (a memory integrated circuit chip) about vehicle operating conditions, and then uses this information to compensate for component variability. Keep Alive RAM remains powered when the vehicle key is off so that this information is not lost.
Thread
Thread Starter
Forum
Replies
Last Post
whisler
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
5
May 23, 2016 09:06 PM
Coalhaulindady
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
Feb 3, 2016 12:23 PM
lawdawg79
1999 - 2003 7.3L Power Stroke Diesel
10
Dec 7, 2015 04:12 PM
DeathRangerofDeath
1987 - 1996 F150 & Larger F-Series Trucks
5
Apr 4, 2015 06:04 PM
