1997 Dodge cummins automatic shifting funky.

[pigpenracing]

I have a 1997 dodge cummins automatic. Just gought the truck and it shifts funky. If you hold it on the floor it seems to take forever for it to shift. Finally it will shift usually. If you lift your foot off the throttle a little it shifts. Same on the highway. When its in 3rd it will not shift to overdrive forever and when you lift your foot a little it shifts. Someone said govenor silinoids go bad. Will that cause this problem? How hard is that to change? Or do I have something else going on?

[12valveterror]

i just got my tranny rebuilt a week ago with triple disc, new valve body, seals, deep pan, and sensors all cleaned up and mine still takes a while to shift at WOT from 3rd to 4th, so im not sure if its just these tranny's or maybe the throttle position sensor, but my TPS was replaced not to long ago...so i dont what it could be im kind of wondering the same thing...

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97' 2500,12V,AT,4x4,230K MILES, DUNRITE TRIPLE DISC & V/B, BILSTEIN 5100's, DSS STABILZER, DIPRICOL GAUGES, BHAF, BOOST ELBOW, #0 FUEL PLATE, KDP KILLED, T/C LOCKUP SWITCH, 15* TIMING, 2" LEVELING KIT, 4" TURBO BACK TO 5" MITRES

[Stump Jumper]

Mine takes a while at WOT as well not so much 3rd to 4th as 4th to lock up. It acts pretty much the same as befor the shif kit I think it is just the way these tranies are ...... 4th and lockup are controlled by the comp on the RE the first 3 gears are Hyd controlled. must have to to with the comp.

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"Freedom is a light for which many men have died in darkness"

TEAM FISHBALLS

DILLIGAF

[jcarl735]

try resetting the TPS or diconnecting both batteries for 15 minutes and running the CPU reset procedure. that might help out. my truck does the same so ive heard that is usually a TPS problem and it just needs to be reset. test it out tonight man! good luck!

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3.55s, 35'' BFG A/Ts, MBRP 4''Turbo Back, #100 Full Forward, AFE ProDry Stage 1, DDP3s, Boost Elbow, AFC Gutted, Starwheel Cranked, Silencer Ring Delete, 50 PSI, DiPricol Boost/Pyro/Trans, KDP Tabbed, Built 47re, Farmboys Full Cut DVs, 3k GSK, ATS Quikspool

[12valveterror]

Originally Posted by jcarl735

try resetting the TPS or diconnecting both batteries for 15 minutes and running the CPU reset procedure. that might help out. my truck does the same so ive heard that is usually a TPS problem and it just needs to be reset. test it out tonight man! good luck!

maybe i'll try that, but what exactly is the cpu reset procedure... and is there a way to addjust the tps so the transmission shifts earlier?? just a thought didnt know if it was possible

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97' 2500,12V,AT,4x4,230K MILES, DUNRITE TRIPLE DISC & V/B, BILSTEIN 5100's, DSS STABILZER, DIPRICOL GAUGES, BHAF, BOOST ELBOW, #0 FUEL PLATE, KDP KILLED, T/C LOCKUP SWITCH, 15* TIMING, 2" LEVELING KIT, 4" TURBO BACK TO 5" MITRES

[illflem]

It shouldn't shift into OD at WOT. Same as any auto when you floor it, some people call the downshift the passing gear.

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Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
Both far from stock

[jcarl735]

sorry i think i misunderstood. when i lockout overdrive and run the truck up to around 50 mph the hit it back into OD the converter unlocks for a bit then it locks back in. thats from the tps needing reset.

sorry terror im with you. i know i read the cpu reset procedure and tps reset procedure somewhere on this site, i just forget exactly where! i need to run them both as well. sounds like we both had our transmissions just redone the same way! and they both do the same thing hahahah. DAAANG.

one question and i dont mean to hijack...when you lock up your convertor switch in 3rd gear do you lockout OD? or do you let it shift with convertor locked and just keep on boogyin'? or do you only use it to lockup in OD. also can you lock up in 2nd?

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3.55s, 35'' BFG A/Ts, MBRP 4''Turbo Back, #100 Full Forward, AFE ProDry Stage 1, DDP3s, Boost Elbow, AFC Gutted, Starwheel Cranked, Silencer Ring Delete, 50 PSI, DiPricol Boost/Pyro/Trans, KDP Tabbed, Built 47re, Farmboys Full Cut DVs, 3k GSK, ATS Quikspool

[mondtster]

Originally Posted by jcarl735

sorry i think i misunderstood. when i lockout overdrive and run the truck up to around 50 mph the hit it back into OD the converter unlocks for a bit then it locks back in. thats from the tps needing reset.

Wrong, that's the way the truck is supposed to work. When OD is locked out, your converter will lock up, but if you hit the button again to enable OD the converter is supposed to unlock, then the transmission will shift and the converter will lock up again.

Originally Posted by jcarl735

one question and i dont mean to hijack...when you lock up your convertor switch in 3rd gear do you lockout OD? or do you let it shift with convertor locked and just keep on boogyin'? or do you only use it to lockup in OD. also can you lock up in 2nd?

That's not a smart idea unless you have a billet input shaft. Hence the reason that the factory controller unlocks the converter in the condition you described above.

[jspike91]

ok, not to high jack the thread, but mine is doing the exact opposite, if i take off from a stop, it almost immediately shifts through every gear, then when i am coming to a stop, it wont downshift on its own. I can shift it manually and it does fine, however when downshifting manually, i take off the overdrive and it will not kick back into drive, but when i get slow enough to pull it into 2nd, it will kick back, then i have to manually get it back into 1st.. any ideas???

97 3500 4x4. 91K miles...

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97 3500 4wd 4" tbe w/muf. delete, aem brute force, fuel plate and star wheel adjustments, wastegate blocked off, silencer mia, boost and egt guages
03 3500 2wd 4" mbrp tbe w/muffler delete,k+n fipk, silencer mia, edge juice hot

[mondtster]

Originally Posted by jspike91

ok, not to high jack the thread, but mine is doing the exact opposite, if i take off from a stop, it almost immediately shifts through every gear, then when i am coming to a stop, it wont downshift on its own. I can shift it manually and it does fine, however when downshifting manually, i take off the overdrive and it will not kick back into drive, but when i get slow enough to pull it into 2nd, it will kick back, then i have to manually get it back into 1st.. any ideas???

97 3500 4x4. 91K miles...

Are you absolutely sure you are really taking off from a dead stop in OD (or any gear other than 1st for that matter)? It is normal for torqueflites to remain in 3rd (direct) until you are almost completely stopped and then it will drop to 1st. Taking off from low speeds will always suck unless you pull it into second.

It is also not necessarily uncommon for the electronically controlled torqueflites to make a second gear start since that is the default "limp home" gear for them to be in. It could be a sign of forthcoming issues and/or possibly a bad pressure transducer or governor solenoid.

[jspike91]

It will take off in 1st, then shift very quickly to 2nd, and on through to OD. and i can manually shift it down. however, it will not shift from overdrive in to drive when i press the button, i have to wait until i get slow enough to pull it down into 2nd before it will do anything.. earlier i put it in neutral coasting to a stop sign, pulled it into drive and it choked the truck down because it was in either drive or od sitting still....

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97 3500 4wd 4" tbe w/muf. delete, aem brute force, fuel plate and star wheel adjustments, wastegate blocked off, silencer mia, boost and egt guages
03 3500 2wd 4" mbrp tbe w/muffler delete,k+n fipk, silencer mia, edge juice hot

[jcarl735]

Originally Posted by mondtster

Wrong, that's the way the truck is supposed to work. When OD is locked out, your converter will lock up, but if you hit the button again to enable OD the converter is supposed to unlock, then the transmission will shift and the converter will lock up again.



That's not a smart idea unless you have a billet input shaft. Hence the reason that the factory controller unlocks the converter in the condition you described above.

oops on the first part! sorry about that. anywho i do have billet shafts in the trans. still probably not a good idea to shift when locked up huh? well anyway can you lock up the convertor in 2nd as well as 3rd and 4th?

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3.55s, 35'' BFG A/Ts, MBRP 4''Turbo Back, #100 Full Forward, AFE ProDry Stage 1, DDP3s, Boost Elbow, AFC Gutted, Starwheel Cranked, Silencer Ring Delete, 50 PSI, DiPricol Boost/Pyro/Trans, KDP Tabbed, Built 47re, Farmboys Full Cut DVs, 3k GSK, ATS Quikspool