Archived Surging Idle When Rolling ('05 Manual)

[GGranahan]

my 2005 3500 surges from 550 rpm to 900 rpm when i push in the clutch and kick it into neutral only while rolling. it seems to get worse when i brake. as soon as i stop the idle goes to 750rpm and if you rev the motor it will perfectly return to 750rpm. the dealer says they can't do anything til the check engine light comes on. my truck only has 900 miles on it and it is 10 months old , i hate driving it like this , sometimes it feels like it is going to stall out.



3500 is a manual trans. diesel xcab



also have 2 other trucks which do NOT do this!

1996 3500 Dual Wheel Cummins Diesel 4X4 Manual Trans Xcab

1999 2500 Cummins Diesel 4X4 Manual Trans



My old 1991 W350 4X4 Diesel Auto Trans never did this either.



How do we make Chrysler aware of this problem and get some action?



I can't believe that I purchased a $40,000 truck that is supposed to be superior to my '96 and '99 models and it fluctuates rpms like a yo-yo. Oo.



I am suspicious that the computer is programmed for a automatic trans that has a constant load on the system rather than a manual trans. Is there just one ECM program for all trucks or is there a different one for a manual trans and an automatic trans?



Give me some feed back!

 

[tp0d]

Yes there are different PCMs for manual/auto. The ECM, I believe, stays the same, just gets different values sent to it from the PCM.



I`d take the truck to the dealer and not leave until you take a *diesel* tech on a ride with you. Either that or find a dealer that will at least try to find the problem. I think you would have a bit more leverage at the dealer where you bought it. Either way, give em he11, the truck shouldnt run like that...



good luck



-j

 

[Pawpaw]

The PCM went away in '04. The ECM does it all now.

 

[2-ND TIME]

poor running truck

Take it to the dollarship and if it isn't fixed the way you want ( LEAVE IT THERE) . I have the same thing and have been suffffffering ever since 99 24V. If it takes months to get it fixed it WILL be worth it. wish i had. :-{} Good luck.

 

[tp0d]

PawPaw



You're saying there is only one computer in an 04+? hmm. . I`ve looked at my dad's 05, theres a computer below the injection pump which controls the engine, there has to be another for body and transmission.



??



-j

 

[Pawpaw]

PawPaw



You're saying there is only one computer in an 04+? hmm. . I`ve looked at my dad's 05, theres a computer below the injection pump which controls the engine, there has to be another for body and transmission.



??



-j

Nope. The computer below the injection pump is the ECM and it does it all.



Go here to download the wiring diagrams: http://www.dodge.com/bodybuilders/



Bob

 

[KDillard]

All the 05's do this that have manual trannies. Mine has done this since I drove it off the lot.